1 | <?php |
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2 | /*************************************************************************** |
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3 | * functions_category.inc.php * |
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4 | * -------------------- * |
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5 | * application : PhpWebGallery 1.3 <http://phpwebgallery.net> * |
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6 | * author : Pierrick LE GALL <pierrick@z0rglub.com> * |
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7 | * * |
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8 | * $Id: functions_category.inc.php 67 2003-09-06 07:22:59Z z0rglub $ |
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9 | * * |
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10 | *************************************************************************** |
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11 | |
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12 | *************************************************************************** |
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13 | * * |
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14 | * This program is free software; you can redistribute it and/or modify * |
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15 | * it under the terms of the GNU General Public License as published by * |
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16 | * the Free Software Foundation; * |
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17 | * * |
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18 | ***************************************************************************/ |
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19 | |
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20 | function get_subcats_id( $cat_id ) |
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21 | { |
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22 | $restricted_cats = array(); |
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23 | |
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24 | $query = 'SELECT id'; |
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25 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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26 | $query.= ' WHERE id_uppercat = '.$cat_id; |
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27 | $query.= ';'; |
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28 | $result = mysql_query( $query ); |
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29 | while ( $row = mysql_fetch_array( $result ) ) |
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30 | { |
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31 | array_push( $restricted_cats, $row['id'] ); |
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32 | $sub_restricted_cats = get_subcats_id( $row['id'] ); |
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33 | foreach ( $sub_restricted_cats as $sub_restricted_cat ) { |
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34 | array_push( $restricted_cats, $sub_restricted_cat ); |
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35 | } |
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36 | } |
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37 | return $restricted_cats; |
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38 | } |
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39 | |
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40 | function check_restrictions( $category_id ) |
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41 | { |
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42 | global $user,$lang; |
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43 | |
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44 | if ( is_user_allowed( $category_id, $user['restrictions'] ) > 0 ) |
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45 | { |
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46 | echo '<div style="text-align:center;">'.$lang['access_forbiden'].'<br />'; |
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47 | echo '<a href="'.add_session_id( './category.php' ).'">'; |
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48 | echo $lang['thumbnails'].'</a></div>'; |
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49 | exit(); |
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50 | } |
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51 | } |
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52 | |
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53 | // the check_cat_id function check whether the $cat is a right parameter : |
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54 | // - $cat is numeric and corresponds to a category in the database |
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55 | // - $cat equals 'fav' (for favorites) |
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56 | // - $cat equals 'search' (when the result of a search is displayed) |
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57 | function check_cat_id( $cat ) |
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58 | { |
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59 | global $page; |
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60 | |
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61 | unset( $page['cat'] ); |
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62 | if ( isset( $cat ) ) |
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63 | { |
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64 | if ( isset( $page['plain_structure'] ) ) |
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65 | { |
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66 | if ( isset( $page['plain_structure'][$cat] ) ) |
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67 | { |
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68 | $page['cat'] = $cat; |
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69 | } |
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70 | } |
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71 | else if ( is_numeric( $cat ) ) |
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72 | { |
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73 | $query = 'SELECT id'; |
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74 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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75 | $query.= ' WHERE id = '.$cat; |
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76 | $query. ';'; |
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77 | $result = mysql_query( $query ); |
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78 | if ( mysql_num_rows( $result ) != 0 ) |
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79 | { |
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80 | $page['cat'] = $cat; |
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81 | } |
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82 | } |
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83 | if ( $cat == 'fav' |
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84 | or $cat == 'search' |
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85 | or $cat == 'most_visited' |
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86 | or $cat == 'best_rated' |
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87 | or $cat == 'recent' ) |
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88 | { |
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89 | $page['cat'] = $cat; |
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90 | } |
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91 | } |
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92 | } |
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93 | |
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94 | function get_plain_structure() |
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95 | { |
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96 | $infos = array( 'name','id','date_last','nb_images','dir','id_uppercat', |
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97 | 'rank','site_id'); |
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98 | |
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99 | $query = 'SELECT '; |
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100 | foreach ( $infos as $i => $info ) { |
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101 | if ( $i > 0 ) $query.= ','; |
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102 | $query.= $info; |
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103 | } |
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104 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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105 | $query.= ' ORDER BY id_uppercat ASC, rank ASC'; |
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106 | $query.= ';'; |
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107 | |
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108 | $plain_structure = array(); |
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109 | $result = mysql_query( $query ); |
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110 | while ( $row = mysql_fetch_array( $result ) ) |
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111 | { |
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112 | $category = array(); |
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113 | foreach ( $infos as $info ) { |
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114 | $category[$info] = $row[$info]; |
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115 | if ( $info == 'date_last' ) |
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116 | { |
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117 | list($year,$month,$day) = explode( '-', $row[$info] ); |
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118 | $category[$info] = mktime(0,0,0,$month,$day,$year); |
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119 | } |
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120 | } |
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121 | $plain_structure[$row['id']] = $category; |
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122 | } |
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123 | |
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124 | return $plain_structure; |
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125 | } |
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126 | |
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127 | function create_structure( $id_uppercat, $restrictions ) |
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128 | { |
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129 | global $page; |
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130 | |
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131 | if ( !isset( $page['plain_structure'] ) ) |
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132 | $page['plain_structure'] = get_plain_structure(); |
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133 | |
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134 | $structure = array(); |
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135 | $ids = get_subcat_ids( $id_uppercat ); |
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136 | foreach ( $ids as $id ) { |
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137 | if ( !in_array( $id, $restrictions ) ) |
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138 | { |
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139 | $category = $page['plain_structure'][$id]; |
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140 | $category['subcats'] = create_structure( $id, $restrictions ); |
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141 | array_push( $structure, $category ); |
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142 | } |
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143 | } |
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144 | return $structure; |
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145 | } |
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146 | |
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147 | function get_subcat_ids( $id_uppercat ) |
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148 | { |
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149 | global $page; |
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150 | |
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151 | $ids = array(); |
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152 | foreach ( $page['plain_structure'] as $id => $category ) { |
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153 | if ( $category['id_uppercat'] == $id_uppercat ) array_push( $ids, $id ); |
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154 | else if ( count( $ids ) > 0 ) return $ids; |
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155 | } |
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156 | return $ids; |
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157 | } |
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158 | |
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159 | // update_structure updates or add informations about each node of the |
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160 | // structure : the last date, should the category be expanded in the menu ?, |
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161 | // the associated expand string "48,14,54" |
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162 | // |
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163 | // 1. last date |
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164 | // for each category of the structure, we have to find the most recent |
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165 | // subcat so that the parent cat has the same last_date info. |
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166 | // For example : we have : |
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167 | // > pets (2003.02.15) |
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168 | // > dogs (2003.06.14) |
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169 | // > rex (2003.06.18) |
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170 | // > toby (2003.06.13) |
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171 | // > kitten (2003.07.05) |
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172 | // We finally want to have : |
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173 | // > pets (2003.07.05) <- changed to pets > kitten last date |
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174 | // > dogs (2003.06.18) <- changed to pets > dogs > rex last date |
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175 | // > rex (2003.06.18) |
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176 | // > toby (2003.06.13) |
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177 | // > kitten (2003.07.05) |
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178 | // |
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179 | // 2. should the category be expanded in the menu ? |
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180 | // If the category has to be expanded (ie its id is in the |
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181 | // $page['tab_expand'] or all the categories must be expanded by default), |
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182 | // $category['expanded'] is set to true. |
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183 | // |
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184 | // 3. associated expand string |
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185 | // in the menu, there is a expand string (used in the URL) to tell which |
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186 | // categories must be expanded in the menu if this category is chosen |
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187 | function update_structure( $categories ) |
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188 | { |
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189 | global $page, $user; |
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190 | |
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191 | $updated_categories = array(); |
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192 | |
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193 | foreach ( $categories as $category ) { |
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194 | // update the last date of the category |
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195 | $last_date = search_last_date( $category ); |
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196 | $category['date_last'] = $last_date; |
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197 | // update the "expanded" key |
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198 | if ( $user['expand'] |
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199 | or $page['expand'] == 'all' |
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200 | or in_array( $category['id'], $page['tab_expand'] ) ) |
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201 | { |
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202 | $category['expanded'] = true; |
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203 | } |
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204 | else |
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205 | { |
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206 | $category['expanded'] = false; |
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207 | } |
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208 | // update the "expand_string" key |
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209 | if ( $page['expand'] == 'all' ) |
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210 | { |
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211 | $category['expand_string'] = 'all'; |
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212 | } |
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213 | else |
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214 | { |
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215 | $tab_expand = $page['tab_expand']; |
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216 | if ( in_array( $category['id'], $page['tab_expand'] ) ) |
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217 | { |
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218 | // the expand string corresponds to the $page['tab_expand'] without |
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219 | // the $category['id'] |
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220 | $tab_expand = array_diff( $page['tab_expand'],array($category['id']) ); |
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221 | } |
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222 | else if ( count( $category['subcats'] ) > 0 ) |
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223 | { |
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224 | // we have this time to add the $category['id']... |
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225 | $tab_expand = array_merge($page['tab_expand'],array($category['id'])); |
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226 | } |
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227 | $category['expand_string'] = implode( ',', $tab_expand ); |
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228 | } |
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229 | // recursive call |
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230 | $category['subcats'] = update_structure( $category['subcats'] ); |
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231 | // adding the updated category |
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232 | array_push( $updated_categories, $category ); |
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233 | } |
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234 | |
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235 | return $updated_categories; |
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236 | } |
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237 | |
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238 | // search_last_date searchs the last date for a given category. If we take |
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239 | // back the example given for update_last_dates, we should have : |
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240 | // search_last_date( pets ) --> 2003.07.05 |
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241 | // search_last_date( pets > dogs ) --> 2003.06.18 |
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242 | // and so on |
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243 | function search_last_date( $category ) |
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244 | { |
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245 | $date_last = $category['date_last']; |
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246 | foreach ( $category['subcats'] as $subcat ) { |
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247 | $subcat_date_last = search_last_date( $subcat ); |
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248 | if ( $subcat_date_last > $date_last ) |
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249 | { |
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250 | $date_last = $subcat_date_last; |
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251 | } |
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252 | } |
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253 | return $date_last; |
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254 | } |
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255 | |
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256 | // count_images returns the number of pictures contained in the given |
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257 | // category represented by an array, in this array, we have (among other |
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258 | // things) : |
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259 | // $category['nb_images'] -> number of pictures in this category |
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260 | // $category['subcats'] -> array of sub-categories |
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261 | // count_images goes to the deepest sub-category to find the total number of |
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262 | // pictures contained in the given given category |
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263 | function count_images( $categories ) |
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264 | { |
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265 | $total = 0; |
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266 | foreach ( $categories as $category ) { |
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267 | $total+= $category['nb_images']; |
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268 | $total+= count_images( $category['subcats'] ); |
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269 | } |
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270 | return $total; |
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271 | } |
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272 | |
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273 | // variables : |
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274 | // $cat['comment'] |
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275 | // $cat['dir'] |
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276 | // $cat['dir'] |
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277 | // $cat['name'] is an array : |
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278 | // - $cat['name'][0] is the lowest cat name |
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279 | // and |
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280 | // - $cat['name'][n] is the most uppercat name findable |
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281 | // $cat['nb_images'] |
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282 | // $cat['id_uppercat'] |
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283 | // $cat['site_id'] |
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284 | function get_cat_info( $id ) |
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285 | { |
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286 | global $page; |
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287 | |
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288 | $cat = array(); |
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289 | |
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290 | $query = 'SELECT nb_images,id_uppercat,comment,site_id,galleries_url,dir'; |
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291 | $query.= ',date_last,uploadable,status,visible'; |
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292 | $query.= ' FROM '.PREFIX_TABLE.'categories AS a'; |
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293 | $query.= ', '.PREFIX_TABLE.'sites AS b'; |
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294 | $query.= ' WHERE a.id = '.$id; |
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295 | $query.= ' AND a.site_id = b.id;'; |
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296 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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297 | $cat['site_id'] = $row['site_id']; |
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298 | $cat['id_uppercat'] = $row['id_uppercat']; |
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299 | $cat['comment'] = nl2br( $row['comment'] ); |
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300 | $cat['nb_images'] = $row['nb_images']; |
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301 | $cat['dir'] = $row['dir']; |
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302 | $cat['date_last'] = $row['date_last']; |
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303 | $cat['uploadable'] = get_boolean( $row['uploadable'] ); |
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304 | $cat['status'] = $row['status']; |
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305 | $cat['visible'] = get_boolean( $row['visible'] ); |
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306 | |
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307 | $cat['name'] = array(); |
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308 | |
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309 | if ( !isset( $page['plain_structure'] ) ) |
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310 | $page['plain_structure'] = get_plain_structure(); |
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311 | |
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312 | array_push( $cat['name'], $page['plain_structure'][$id]['name'] ); |
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313 | while ( $page['plain_structure'][$id]['id_uppercat'] != '' ) |
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314 | { |
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315 | $id = $page['plain_structure'][$id]['id_uppercat']; |
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316 | array_push( $cat['name'], $page['plain_structure'][$id]['name'] ); |
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317 | } |
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318 | return $cat; |
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319 | } |
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320 | |
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321 | // get_complete_dir returns the concatenation of get_site_url and |
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322 | // get_local_dir |
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323 | // Example : "pets > rex > 1_year_old" is on the the same site as the |
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324 | // PhpWebGallery files and this category has 22 for identifier |
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325 | // get_complete_dir(22) returns "./galleries/pets/rex/1_year_old/" |
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326 | function get_complete_dir( $category_id ) |
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327 | { |
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328 | return get_site_url( $category_id ).get_local_dir( $category_id ); |
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329 | } |
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330 | |
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331 | // get_local_dir returns an array with complete path without the site url |
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332 | // Example : "pets > rex > 1_year_old" is on the the same site as the |
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333 | // PhpWebGallery files and this category has 22 for identifier |
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334 | // get_local_dir(22) returns "pets/rex/1_year_old/" |
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335 | function get_local_dir( $category_id ) |
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336 | { |
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337 | global $page; |
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338 | |
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339 | if ( !isset( $page['plain_structure'] ) ) |
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340 | $page['plain_structure'] = get_plain_structure(); |
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341 | |
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342 | // creating the local path : "root_cat/sub_cat/sub_sub_cat/" |
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343 | $dir = $page['plain_structure'][$category_id]['dir'].'/'; |
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344 | while ( $page['plain_structure'][$category_id]['id_uppercat'] != '' ) |
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345 | { |
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346 | $category_id = $page['plain_structure'][$category_id]['id_uppercat']; |
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347 | $dir = $page['plain_structure'][$category_id]['dir'].'/'.$dir; |
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348 | } |
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349 | return $dir; |
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350 | } |
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351 | |
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352 | // retrieving the site url : "http://domain.com/gallery/" or |
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353 | // simply "./galleries/" |
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354 | function get_site_url( $category_id ) |
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355 | { |
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356 | global $page; |
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357 | |
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358 | if ( !isset( $page['plain_structure'] ) ) |
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359 | $page['plain_structure'] = get_plain_structure(); |
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360 | |
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361 | $query = 'SELECT galleries_url'; |
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362 | $query.= ' FROM '.PREFIX_TABLE.'sites'; |
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363 | $query.= ' WHERE id = '.$page['plain_structure'][$category_id]['site_id']; |
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364 | $query.= ';'; |
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365 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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366 | return $row['galleries_url']; |
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367 | } |
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368 | |
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369 | // The function get_cat_display_name returns a string containing the list |
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370 | // of upper categories to the root category from the lowest category shown |
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371 | // example : "anniversaires - fete mere 2002 - animaux - erika" |
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372 | // You can give two parameters : |
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373 | // - $separation : the string between each category name " - " for example |
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374 | // - $style : the style of the span tag for the lowest category, |
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375 | // "font-style:italic;" for example |
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376 | function get_cat_display_name( $array_cat_names, $separation, $style ) |
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377 | { |
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378 | $output = ""; |
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379 | for ( $i = sizeof( $array_cat_names ) - 1; $i >= 0; $i-- ) |
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380 | { |
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381 | if ( $i != sizeof( $array_cat_names ) - 1 ) |
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382 | { |
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383 | $output.= $separation; |
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384 | } |
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385 | if ( $i != 0 ) |
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386 | { |
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387 | $output.= $array_cat_names[$i]; |
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388 | } |
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389 | else |
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390 | { |
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391 | if ( $style != "" ) |
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392 | { |
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393 | $output.= '<span style="'.$style.'">'; |
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394 | } |
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395 | $output.= $array_cat_names[$i]; |
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396 | if ( $style != "" ) |
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397 | { |
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398 | $output.= "</span>"; |
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399 | } |
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400 | } |
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401 | } |
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402 | return replace_space( $output ); |
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403 | } |
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404 | |
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405 | // initialize_category initializes ;-) the variables in relation |
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406 | // with category : |
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407 | // 1. calculation of the number of pictures in the category |
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408 | // 2. determination of the SQL query part to ask to find the right category |
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409 | // $page['where'] is not the same if we are in |
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410 | // - simple category |
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411 | // - search result |
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412 | // - favorites displaying |
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413 | // - most visited pictures |
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414 | // - best rated pictures |
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415 | // - recent pictures |
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416 | // 3. determination of the title of the page |
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417 | // 4. creation of the navigation bar |
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418 | function initialize_category( $calling_page = 'category' ) |
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419 | { |
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420 | global $page,$lang,$user,$conf; |
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421 | |
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422 | if ( isset( $page['cat'] ) ) |
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423 | { |
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424 | // $page['nb_image_page'] is the number of picture to display on this page |
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425 | // By default, it is the same as the $user['nb_image_page'] |
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426 | $page['nb_image_page'] = $user['nb_image_page']; |
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427 | // $url is used to create the navigation bar |
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428 | $url = './category.php?cat='.$page['cat'].'&expand='.$page['expand']; |
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429 | // simple category |
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430 | if ( is_numeric( $page['cat'] ) ) |
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431 | { |
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432 | $result = get_cat_info( $page['cat'] ); |
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433 | $page['comment'] = $result['comment']; |
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434 | $page['cat_dir'] = $result['dir']; |
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435 | $page['cat_name'] = $result['name']; |
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436 | $page['cat_nb_images'] = $result['nb_images']; |
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437 | $page['cat_site_id'] = $result['site_id']; |
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438 | $page['cat_uploadable'] = $result['uploadable']; |
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439 | $page['title'] = get_cat_display_name( $page['cat_name'], ' - ', '' ); |
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440 | $page['where'] = ' WHERE category_id = '.$page['cat']; |
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441 | } |
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442 | else |
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443 | { |
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444 | if ( $page['cat'] == 'search' or $page['cat'] == 'most_visited' |
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445 | or $page['cat'] == 'recent' or $page['cat'] == 'best_rated' ) |
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446 | { |
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447 | // we must not show pictures of a forbidden category |
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448 | $restricted_cats = get_all_restrictions( $user['id'],$user['status'] ); |
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449 | if ( count( $restricted_cats ) > 0 ) |
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450 | { |
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451 | $where_append.= ' AND category_id NOT IN ('; |
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452 | foreach ( $restricted_cats as $i => $restricted_cat ) { |
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453 | if ( $i > 0 ) $where_append.= ','; |
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454 | $where_append.= $restricted_cat; |
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455 | } |
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456 | $where_append.= ')'; |
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457 | } |
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458 | } |
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459 | // search result |
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460 | if ( $page['cat'] == 'search' ) |
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461 | { |
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462 | $page['title'] = $lang['search_result']; |
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463 | if ( $calling_page == 'picture' ) |
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464 | { |
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465 | $page['title'].= ' : <span style="font-style:italic;">'; |
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466 | $page['title'].= $_GET['search']."</span>"; |
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467 | } |
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468 | |
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469 | $page['where'] = ' WHERE ('; |
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470 | $fields = array( 'file', 'name', 'comment', 'keywords' ); |
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471 | $words = explode( ',', $_GET['search'] ); |
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472 | $sql_search = array(); |
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473 | foreach ( $words as $i => $word ) { |
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474 | // if the user searchs any of the words, the where statement must |
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475 | // be : |
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476 | // field1 LIKE '%$word1%' OR field2 LIKE '%$word1%' ... |
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477 | // OR field1 LIKE '%$word2%' OR field2 LIKE '%$word2%' ... |
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478 | if ( $_GET['mode'] == 'OR' ) |
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479 | { |
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480 | if ( $i != 0 ) $page['where'].= ' OR'; |
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481 | foreach ( $fields as $j => $field ) { |
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482 | if ( $j != 0 ) $page['where'].= ' OR'; |
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483 | $page['where'].= ' '.$field." LIKE '%".$word."%'"; |
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484 | } |
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485 | } |
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486 | // if the user searchs all the words : |
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487 | // ( field1 LIKE '%$word1%' OR field2 LIKE '%$word1%' ) |
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488 | // AND ( field1 LIKE '%$word2%' OR field2 LIKE '%$word2%' ) |
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489 | else if ( $_GET['mode'] == 'AND' ) |
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490 | { |
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491 | if ( $i != 0 ) $page['where'].= ' AND'; |
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492 | $page['where'].= ' ('; |
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493 | foreach ( $fields as $j => $field ) { |
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494 | if ( $j != 0 ) $page['where'].= ' OR'; |
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495 | $page['where'].= ' '.$field." LIKE '%".$word."%'"; |
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496 | } |
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497 | $page['where'].= ' )'; |
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498 | } |
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499 | } |
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500 | $page['where'].= ' )'; |
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501 | $page['where'].= $where_append; |
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502 | |
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503 | $query = 'SELECT COUNT(DISTINCT(id)) AS nb_total_images'; |
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504 | $query.= ' FROM '.PREFIX_TABLE.'images'; |
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505 | $query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic'; |
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506 | $query.= ' ON id = ic.image_id'; |
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507 | $query.= $page['where']; |
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508 | $query.= ';'; |
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509 | |
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510 | $url.= '&search='.$_GET['search'].'&mode='.$_GET['mode']; |
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511 | } |
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512 | // favorites displaying |
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513 | else if ( $page['cat'] == 'fav' ) |
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514 | { |
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515 | $page['title'] = $lang['favorites']; |
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516 | |
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517 | $page['where'] = ', '.PREFIX_TABLE.'favorites AS fav'; |
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518 | $page['where'].= ' WHERE user_id = '.$user['id']; |
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519 | $page['where'].= ' AND fav.image_id = id'; |
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520 | |
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521 | $query = 'SELECT COUNT(*) AS nb_total_images'; |
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522 | $query.= ' FROM '.PREFIX_TABLE.'favorites'; |
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523 | $query.= ' WHERE user_id = '.$user['id']; |
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524 | $query.= ';'; |
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525 | } |
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526 | // pictures within the short period |
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527 | else if ( $page['cat'] == 'recent' ) |
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528 | { |
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529 | $page['title'] = $lang['recent_cat_title']; |
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530 | // We must find the date corresponding to : |
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531 | // today - $conf['periode_courte'] |
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532 | $date = time() - 60*60*24*$user['short_period']; |
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533 | $page['where'] = " WHERE date_available > '"; |
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534 | $page['where'].= date( 'Y-m-d', $date )."'"; |
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535 | $page['where'].= $where_append; |
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536 | |
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537 | $query = 'SELECT COUNT(DISTINCT(id)) AS nb_total_images'; |
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538 | $query.= ' FROM '.PREFIX_TABLE.'images'; |
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539 | $query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic'; |
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540 | $query.= ' ON id = ic.image_id'; |
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541 | $query.= $page['where']; |
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542 | $query.= ';'; |
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543 | } |
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544 | // most visited pictures |
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545 | else if ( $page['cat'] == 'most_visited' ) |
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546 | { |
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547 | $page['title'] = $conf['top_number'].' '.$lang['most_visited_cat']; |
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548 | $page['where'] = ' WHERE category_id != -1'.$where_append; |
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549 | $conf['order_by'] = ' ORDER BY hit DESC, file ASC'; |
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550 | $page['cat_nb_images'] = $conf['top_number']; |
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551 | if ( $page['start'] + $user['nb_image_page'] >= $conf['top_number'] ) |
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552 | { |
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553 | $page['nb_image_page'] = $conf['top_number'] - $page['start']; |
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554 | } |
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555 | } |
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556 | |
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557 | if ( $query != '' ) |
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558 | { |
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559 | echo $query; |
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560 | $result = mysql_query( $query ); |
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561 | $row = mysql_fetch_array( $result ); |
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562 | $page['cat_nb_images'] = $row['nb_total_images']; |
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563 | } |
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564 | } |
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565 | if ( $calling_page == 'category' ) |
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566 | { |
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567 | $page['navigation_bar'] = |
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568 | create_navigation_bar( $url, $page['cat_nb_images'], $page['start'], |
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569 | $user['nb_image_page'], 'back' ); |
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570 | } |
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571 | } |
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572 | else |
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573 | { |
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574 | $page['title'] = $lang['diapo_default_page_title']; |
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575 | } |
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576 | } |
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577 | |
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578 | // get_non_empty_subcat_ids returns an array with sub-categories id |
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579 | // associated with their first non empty category id. |
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580 | // |
---|
581 | // example : |
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582 | // |
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583 | // - catname [cat_id] |
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584 | // - cat1 [1] -> given uppercat |
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585 | // - cat1.1 [12] (empty) |
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586 | // - cat1.1.1 [5] (empty) |
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587 | // - cat1.1.2 [6] |
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588 | // - cat1.2 [3] |
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589 | // - cat1.3 [4] |
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590 | // |
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591 | // get_non_empty_sub_cat_ids will return : |
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592 | // $ids[12] = 6; |
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593 | // $ids[3] = 3; |
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594 | // $ids[4] = 4; |
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595 | function get_non_empty_subcat_ids( $id_uppercat ) |
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596 | { |
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597 | global $user; |
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598 | |
---|
599 | $ids = array(); |
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600 | |
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601 | $query = 'SELECT id,nb_images'; |
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602 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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603 | $query.= ' WHERE id_uppercat '; |
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604 | if ( !is_numeric( $id_uppercat ) ) $query.= 'is NULL'; |
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605 | else $query.= '= '.$id_uppercat; |
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606 | // we must not show pictures of a forbidden category |
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607 | foreach ( $user['restrictions'] as $restricted_cat ) { |
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608 | $query.= ' AND id != '.$restricted_cat; |
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609 | } |
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610 | $query.= ' ORDER BY rank'; |
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611 | $query.= ';'; |
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612 | |
---|
613 | $result = mysql_query( $query ); |
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614 | while ( $row = mysql_fetch_array( $result ) ) |
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615 | { |
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616 | // only categories with findable picture in any of its subcats is |
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617 | // represented. |
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618 | if ( ( $row['nb_images'] != 0 and $non_empty_cat = $row['id'] ) |
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619 | or $non_empty_cat = get_first_non_empty_cat_id( $row['id'] ) ) |
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620 | { |
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621 | $ids[$row['id']] = $non_empty_cat; |
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622 | } |
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623 | } |
---|
624 | return $ids; |
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625 | } |
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626 | |
---|
627 | // get_first_non_empty_cat_id returns the id of the first non empty |
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628 | // sub-category to the given uppercat. If no picture is found in any |
---|
629 | // subcategory, false is returned. |
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630 | function get_first_non_empty_cat_id( $id_uppercat ) |
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631 | { |
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632 | global $user; |
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633 | |
---|
634 | $query = 'SELECT id,nb_images'; |
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635 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
636 | $query.= ' WHERE id_uppercat = '.$id_uppercat; |
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637 | // we must not show pictures of a forbidden category |
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638 | foreach ( $user['restrictions'] as $restricted_cat ) { |
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639 | $query.= ' AND id != '.$restricted_cat; |
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640 | } |
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641 | $query.= ' ORDER BY RAND()'; |
---|
642 | $query.= ';'; |
---|
643 | $result = mysql_query( $query ); |
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644 | while ( $row = mysql_fetch_array( $result ) ) |
---|
645 | { |
---|
646 | if ( $row['nb_images'] > 0 ) |
---|
647 | { |
---|
648 | return $row['id']; |
---|
649 | } |
---|
650 | } |
---|
651 | $result = mysql_query( $query ); |
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652 | while ( $row = mysql_fetch_array( $result ) ) |
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653 | { |
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654 | // recursive call |
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655 | if ( $subcat = get_first_non_empty_cat_id( $row['id'] ) ) |
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656 | { |
---|
657 | return $subcat; |
---|
658 | } |
---|
659 | } |
---|
660 | return false; |
---|
661 | } |
---|
662 | ?> |
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