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 <http://phpwebgallery.net> | |
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6 | // | branch : BSF (Best So Far) | |
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7 | // +-----------------------------------------------------------------------+ |
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8 | // | file : $RCSfile$ |
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9 | // | last update : $Date: 2004-02-11 23:20:38 +0000 (Wed, 11 Feb 2004) $ |
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10 | // | last modifier : $Author: z0rglub $ |
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11 | // | revision : $Revision: 362 $ |
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12 | // +-----------------------------------------------------------------------+ |
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13 | // | This program is free software; you can redistribute it and/or modify | |
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14 | // | it under the terms of the GNU General Public License as published by | |
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15 | // | the Free Software Foundation | |
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16 | // | | |
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17 | // | This program is distributed in the hope that it will be useful, but | |
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18 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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19 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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20 | // | General Public License for more details. | |
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21 | // | | |
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22 | // | You should have received a copy of the GNU General Public License | |
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23 | // | along with this program; if not, write to the Free Software | |
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24 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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25 | // | USA. | |
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26 | // +-----------------------------------------------------------------------+ |
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27 | |
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28 | function check_restrictions( $category_id ) |
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29 | { |
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30 | global $user,$lang; |
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31 | |
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32 | if ( in_array( $category_id, $user['restrictions'] ) ) |
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33 | { |
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34 | echo '<div style="text-align:center;">'.$lang['access_forbiden'].'<br />'; |
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35 | echo '<a href="'.add_session_id( './category.php' ).'">'; |
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36 | echo $lang['thumbnails'].'</a></div>'; |
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37 | exit(); |
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38 | } |
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39 | } |
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40 | |
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41 | // the check_cat_id function check whether the $cat is a right parameter : |
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42 | // - $cat is numeric and corresponds to a category in the database |
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43 | // - $cat equals 'fav' (for favorites) |
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44 | // - $cat equals 'search' (when the result of a search is displayed) |
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45 | function check_cat_id( $cat ) |
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46 | { |
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47 | global $page; |
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48 | |
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49 | unset( $page['cat'] ); |
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50 | if ( isset( $cat ) ) |
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51 | { |
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52 | if ( isset( $page['plain_structure'][$cat] ) ) |
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53 | { |
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54 | $page['cat'] = $cat; |
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55 | } |
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56 | else if ( is_numeric( $cat ) ) |
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57 | { |
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58 | $query = 'SELECT id'; |
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59 | $query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$cat.';'; |
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60 | $result = mysql_query( $query ); |
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61 | if ( mysql_num_rows( $result ) != 0 ) |
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62 | { |
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63 | $page['cat'] = $cat; |
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64 | } |
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65 | } |
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66 | if ( $cat == 'fav' |
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67 | or $cat == 'search' |
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68 | or $cat == 'most_visited' |
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69 | or $cat == 'best_rated' |
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70 | or $cat == 'recent' ) |
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71 | { |
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72 | $page['cat'] = $cat; |
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73 | } |
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74 | } |
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75 | } |
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76 | |
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77 | function get_user_plain_structure() |
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78 | { |
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79 | global $page,$user; |
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80 | |
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81 | $infos = array( 'name','id','uc.date_last','nb_images','dir','id_uppercat', |
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82 | 'rank','site_id','nb_sub_categories','uppercats'); |
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83 | |
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84 | $query = 'SELECT '.implode( ',', $infos ); |
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85 | $query.= ' FROM '.CATEGORIES_TABLE.' AS c'; |
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86 | // $query.= ' ,'.PREFIX_TABLE.'user_category AS uc'; |
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87 | $query.= ' INNER JOIN '.USER_CATEGORY_TABLE.' AS uc'; |
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88 | $query.= ' ON c.id = uc.category_id'; |
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89 | $query.= ' WHERE user_id = '.$user['id']; |
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90 | if ( $page['expand'] != 'all' ) |
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91 | { |
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92 | $query.= ' AND (id_uppercat is NULL'; |
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93 | if ( count( $page['tab_expand'] ) > 0 ) |
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94 | { |
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95 | $query.= ' OR id_uppercat IN ('.$page['expand'].')'; |
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96 | } |
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97 | $query.= ')'; |
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98 | } |
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99 | if ( $user['forbidden_categories'] != '' ) |
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100 | { |
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101 | $query.= ' AND id NOT IN '; |
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102 | $query.= '('.$user['forbidden_categories'].')'; |
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103 | } |
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104 | // $query.= ' AND c.id = uc.category_id'; |
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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 | if ( $info == 'uc.date_last' ) |
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115 | { |
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116 | list($year,$month,$day) = explode( '-', $row['date_last'] ); |
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117 | $category['date_last'] = mktime(0,0,0,$month,$day,$year); |
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118 | } |
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119 | else if ( isset( $row[$info] ) ) $category[$info] = $row[$info]; |
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120 | else $category[$info] = ''; |
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121 | } |
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122 | $plain_structure[$row['id']] = $category; |
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123 | } |
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124 | |
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125 | return $plain_structure; |
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126 | } |
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127 | |
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128 | function create_user_structure( $id_uppercat ) |
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129 | { |
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130 | global $page; |
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131 | |
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132 | if ( !isset( $page['plain_structure'] ) ) |
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133 | $page['plain_structure'] = get_user_plain_structure(); |
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134 | |
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135 | $structure = array(); |
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136 | $ids = get_user_subcat_ids( $id_uppercat ); |
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137 | foreach ( $ids as $id ) { |
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138 | $category = $page['plain_structure'][$id]; |
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139 | $category['subcats'] = create_user_structure( $id ); |
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140 | array_push( $structure, $category ); |
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141 | } |
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142 | return $structure; |
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143 | } |
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144 | |
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145 | function get_user_subcat_ids( $id_uppercat ) |
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146 | { |
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147 | global $page; |
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148 | |
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149 | $ids = array(); |
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150 | foreach ( $page['plain_structure'] as $id => $category ) { |
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151 | if ( $category['id_uppercat'] == $id_uppercat ) array_push( $ids, $id ); |
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152 | else if ( count( $ids ) > 0 ) return $ids; |
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153 | } |
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154 | return $ids; |
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155 | } |
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156 | |
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157 | // update_structure updates or add informations about each node of the |
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158 | // structure : |
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159 | // |
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160 | // 1. should the category be expanded in the menu ? |
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161 | // If the category has to be expanded (ie its id is in the |
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162 | // $page['tab_expand'] or all the categories must be expanded by default), |
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163 | // $category['expanded'] is set to true. |
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164 | // |
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165 | // 2. associated expand string |
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166 | // in the menu, there is a expand string (used in the URL) to tell which |
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167 | // categories must be expanded in the menu if this category is chosen |
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168 | function update_structure( $categories ) |
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169 | { |
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170 | global $page, $user; |
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171 | |
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172 | $updated_categories = array(); |
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173 | |
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174 | foreach ( $categories as $category ) { |
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175 | // update the "expanded" key |
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176 | if ( $user['expand'] |
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177 | or $page['expand'] == 'all' |
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178 | or in_array( $category['id'], $page['tab_expand'] ) ) |
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179 | { |
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180 | $category['expanded'] = true; |
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181 | } |
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182 | else |
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183 | { |
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184 | $category['expanded'] = false; |
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185 | } |
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186 | // update the "expand_string" key |
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187 | if ( $page['expand'] == 'all' ) |
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188 | { |
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189 | $category['expand_string'] = 'all'; |
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190 | } |
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191 | else |
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192 | { |
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193 | $tab_expand = $page['tab_expand']; |
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194 | if ( in_array( $category['id'], $page['tab_expand'] ) ) |
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195 | { |
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196 | // the expand string corresponds to the $page['tab_expand'] without |
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197 | // the $category['id'] |
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198 | $tab_expand = array_diff( $page['tab_expand'],array($category['id']) ); |
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199 | } |
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200 | else if ( $category['nb_sub_categories'] > 0 ) |
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201 | { |
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202 | // we have this time to add the $category['id']... |
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203 | $tab_expand = array_merge($page['tab_expand'],array($category['id'])); |
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204 | } |
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205 | $category['expand_string'] = implode( ',', $tab_expand ); |
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206 | } |
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207 | // recursive call |
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208 | $category['subcats'] = update_structure( $category['subcats'] ); |
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209 | // adding the updated category |
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210 | array_push( $updated_categories, $category ); |
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211 | } |
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212 | |
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213 | return $updated_categories; |
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214 | } |
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215 | |
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216 | // count_images returns the number of pictures contained in the given |
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217 | // category represented by an array, in this array, we have (among other |
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218 | // things) : |
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219 | // $category['nb_images'] -> number of pictures in this category |
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220 | // $category['subcats'] -> array of sub-categories |
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221 | // count_images goes to the deepest sub-category to find the total number of |
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222 | // pictures contained in the given given category |
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223 | function count_images( $categories ) |
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224 | { |
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225 | return count_user_total_images(); |
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226 | $total = 0; |
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227 | foreach ( $categories as $category ) { |
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228 | $total+= $category['nb_images']; |
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229 | $total+= count_images( $category['subcats'] ); |
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230 | } |
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231 | return $total; |
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232 | } |
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233 | |
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234 | function count_user_total_images() |
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235 | { |
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236 | global $user; |
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237 | |
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238 | $query = 'SELECT SUM(nb_images) AS total'; |
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239 | $query.= ' FROM '.CATEGORIES_TABLE; |
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240 | if ( count( $user['restrictions'] ) > 0 ) |
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241 | $query.= ' WHERE id NOT IN ('.$user['forbidden_categories'].')'; |
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242 | $query.= ';'; |
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243 | |
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244 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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245 | |
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246 | if ( !isset( $row['total'] ) ) $row['total'] = 0; |
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247 | |
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248 | return $row['total']; |
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249 | } |
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250 | |
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251 | // variables : |
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252 | // $cat['comment'] |
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253 | // $cat['dir'] |
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254 | // $cat['dir'] |
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255 | // $cat['name'] is an array : |
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256 | // - $cat['name'][0] is the lowest cat name |
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257 | // and |
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258 | // - $cat['name'][n] is the most uppercat name findable |
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259 | // $cat['nb_images'] |
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260 | // $cat['id_uppercat'] |
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261 | // $cat['site_id'] |
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262 | function get_cat_info( $id ) |
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263 | { |
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264 | global $page; |
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265 | |
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266 | $infos = array( 'nb_images','id_uppercat','comment','site_id','galleries_url' |
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267 | ,'dir','date_last','uploadable','status','visible' |
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268 | ,'representative_picture_id','uppercats' ); |
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269 | |
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270 | $query = 'SELECT '.implode( ',', $infos ); |
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271 | $query.= ' FROM '.CATEGORIES_TABLE.' AS a'; |
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272 | $query.= ', '.SITES_TABLE.' AS b'; |
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273 | $query.= ' WHERE a.id = '.$id; |
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274 | $query.= ' AND a.site_id = b.id'; |
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275 | $query.= ';'; |
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276 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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277 | |
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278 | $cat = array(); |
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279 | // affectation of each field of the table "config" to an information of the |
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280 | // array $cat. |
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281 | foreach ( $infos as $info ) { |
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282 | if ( isset( $row[$info] ) ) $cat[$info] = $row[$info]; |
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283 | else $cat[$info] = ''; |
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284 | // If the field is true or false, the variable is transformed into a |
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285 | // boolean value. |
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286 | if ( $cat[$info] == 'true' or $cat[$info] == 'false' ) |
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287 | { |
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288 | $cat[$info] = get_boolean( $cat[$info] ); |
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289 | } |
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290 | } |
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291 | $cat['comment'] = nl2br( $cat['comment'] ); |
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292 | |
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293 | $cat['name'] = array(); |
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294 | |
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295 | $query = 'SELECT name FROM '.CATEGORIES_TABLE; |
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296 | $query.= ' WHERE id IN ('.$cat['uppercats'].')'; |
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297 | $query.= ' ORDER BY id ASC'; |
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298 | $query.= ';'; |
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299 | $result = mysql_query( $query ); |
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300 | while( $row = mysql_fetch_array( $result ) ) |
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301 | { |
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302 | array_push( $cat['name'], $row['name'] ); |
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303 | } |
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304 | |
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305 | return $cat; |
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306 | } |
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307 | |
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308 | // get_complete_dir returns the concatenation of get_site_url and |
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309 | // get_local_dir |
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310 | // Example : "pets > rex > 1_year_old" is on the the same site as the |
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311 | // PhpWebGallery files and this category has 22 for identifier |
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312 | // get_complete_dir(22) returns "./galleries/pets/rex/1_year_old/" |
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313 | function get_complete_dir( $category_id ) |
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314 | { |
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315 | return get_site_url( $category_id ).get_local_dir( $category_id ); |
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316 | } |
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317 | |
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318 | // get_local_dir returns an array with complete path without the site url |
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319 | // Example : "pets > rex > 1_year_old" is on the the same site as the |
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320 | // PhpWebGallery files and this category has 22 for identifier |
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321 | // get_local_dir(22) returns "pets/rex/1_year_old/" |
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322 | function get_local_dir( $category_id ) |
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323 | { |
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324 | global $page; |
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325 | |
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326 | $uppercats = ''; |
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327 | $local_dir = ''; |
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328 | |
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329 | if ( isset( $page['plain_structure'][$category_id]['uppercats'] ) ) |
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330 | { |
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331 | $uppercats = $page['plain_structure'][$category_id]['uppercats']; |
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332 | } |
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333 | else |
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334 | { |
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335 | $query = 'SELECT uppercats'; |
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336 | $query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$category_id; |
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337 | $query.= ';'; |
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338 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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339 | $uppercats = $row['uppercats']; |
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340 | } |
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341 | |
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342 | $upper_array = explode( ',', $uppercats ); |
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343 | |
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344 | $database_dirs = array(); |
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345 | $query = 'SELECT id,dir'; |
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346 | $query.= ' FROM '.CATEGORIES_TABLE.' WHERE id IN ('.$uppercats.')'; |
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347 | $query.= ';'; |
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348 | $result = mysql_query( $query ); |
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349 | while( $row = mysql_fetch_array( $result ) ) |
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350 | { |
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351 | $database_dirs[$row['id']] = $row['dir']; |
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352 | } |
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353 | foreach ( $upper_array as $id ) { |
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354 | $local_dir.= $database_dirs[$id].'/'; |
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355 | } |
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356 | |
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357 | return $local_dir; |
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358 | } |
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359 | |
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360 | // retrieving the site url : "http://domain.com/gallery/" or |
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361 | // simply "./galleries/" |
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362 | function get_site_url( $category_id ) |
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363 | { |
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364 | global $page; |
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365 | |
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366 | $query = 'SELECT galleries_url'; |
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367 | $query.= ' FROM '.SITES_TABLE.' AS s,'.CATEGORIES_TABLE.' AS c'; |
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368 | $query.= ' WHERE s.id = c.site_id'; |
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369 | $query.= ' AND c.id = '.$category_id; |
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370 | $query.= ';'; |
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371 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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372 | return $row['galleries_url']; |
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373 | } |
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374 | |
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375 | // The function get_cat_display_name returns a string containing the list |
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376 | // of upper categories to the root category from the lowest category shown |
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377 | // example : "anniversaires - fete mere 2002 - animaux - erika" |
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378 | // You can give two parameters : |
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379 | // - $separation : the string between each category name " - " for example |
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380 | // - $style : the style of the span tag for the lowest category, |
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381 | // "font-style:italic;" for example |
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382 | function get_cat_display_name( $array_cat_names, $separation, |
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383 | $style, $replace_space = true ) |
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384 | { |
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385 | $output = ''; |
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386 | foreach ( $array_cat_names as $i => $name ) { |
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387 | if ( $i > 0 ) $output.= $separation; |
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388 | if ( $i < count( $array_cat_names ) - 1 or $style == '') |
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389 | $output.= $name; |
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390 | else |
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391 | $output.= '<span style="'.$style.'">'.$name.'</span>'; |
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392 | } |
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393 | if ( $replace_space ) return replace_space( $output ); |
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394 | else return $output; |
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395 | } |
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396 | |
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397 | // initialize_category initializes ;-) the variables in relation |
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398 | // with category : |
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399 | // 1. calculation of the number of pictures in the category |
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400 | // 2. determination of the SQL query part to ask to find the right category |
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401 | // $page['where'] is not the same if we are in |
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402 | // - simple category |
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403 | // - search result |
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404 | // - favorites displaying |
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405 | // - most visited pictures |
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406 | // - best rated pictures |
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407 | // - recent pictures |
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408 | // 3. determination of the title of the page |
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409 | // 4. creation of the navigation bar |
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410 | function initialize_category( $calling_page = 'category' ) |
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411 | { |
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412 | pwg_debug( 'start initialize_category' ); |
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413 | global $page,$lang,$user,$conf; |
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414 | |
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415 | if ( isset( $page['cat'] ) ) |
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416 | { |
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417 | // $page['nb_image_page'] is the number of picture to display on this page |
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418 | // By default, it is the same as the $user['nb_image_page'] |
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419 | $page['nb_image_page'] = $user['nb_image_page']; |
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420 | // $url is used to create the navigation bar |
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421 | $url = './category.php?cat='.$page['cat']; |
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422 | if ( isset($page['expand']) ) $url.= '&expand='.$page['expand']; |
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423 | // simple category |
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424 | if ( is_numeric( $page['cat'] ) ) |
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425 | { |
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426 | $result = get_cat_info( $page['cat'] ); |
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427 | $page['comment'] = $result['comment']; |
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428 | $page['cat_dir'] = $result['dir']; |
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429 | $page['cat_name'] = $result['name']; |
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430 | $page['cat_nb_images'] = $result['nb_images']; |
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431 | $page['cat_site_id'] = $result['site_id']; |
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432 | $page['cat_uploadable'] = $result['uploadable']; |
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433 | $page['uppercats'] = $result['uppercats']; |
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434 | $page['title'] = get_cat_display_name( $page['cat_name'],' - ','',false); |
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435 | $page['where'] = ' WHERE category_id = '.$page['cat']; |
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436 | } |
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437 | else |
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438 | { |
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439 | if ( $page['cat'] == 'search' or $page['cat'] == 'most_visited' |
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440 | or $page['cat'] == 'recent' or $page['cat'] == 'best_rated' ) |
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441 | { |
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442 | // we must not show pictures of a forbidden category |
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443 | if ( $user['forbidden_categories'] != '' ) |
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444 | { |
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445 | $forbidden = ' category_id NOT IN '; |
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446 | $forbidden.= '('.$user['forbidden_categories'].')'; |
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447 | } |
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448 | } |
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449 | // search result |
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450 | if ( $page['cat'] == 'search' ) |
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451 | { |
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452 | $page['title'] = $lang['search_result']; |
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453 | if ( $calling_page == 'picture' ) |
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454 | { |
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455 | $page['title'].= ' : <span style="font-style:italic;">'; |
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456 | $page['title'].= $_GET['search']."</span>"; |
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457 | } |
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458 | |
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459 | $page['where'] = ' WHERE ('; |
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460 | $fields = array( 'file', 'name', 'comment', 'keywords' ); |
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461 | $words = explode( ',', $_GET['search'] ); |
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462 | $sql_search = array(); |
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463 | foreach ( $words as $i => $word ) { |
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464 | // if the user searchs any of the words, the where statement must |
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465 | // be : |
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466 | // field1 LIKE '%$word1%' OR field2 LIKE '%$word1%' ... |
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467 | // OR field1 LIKE '%$word2%' OR field2 LIKE '%$word2%' ... |
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468 | if ( $_GET['mode'] == 'OR' ) |
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469 | { |
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470 | if ( $i != 0 ) $page['where'].= ' OR'; |
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471 | foreach ( $fields as $j => $field ) { |
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472 | if ( $j != 0 ) $page['where'].= ' OR'; |
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473 | $page['where'].= ' '.$field." LIKE '%".$word."%'"; |
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474 | } |
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475 | } |
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476 | // if the user searchs all the words : |
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477 | // ( field1 LIKE '%$word1%' OR field2 LIKE '%$word1%' ) |
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478 | // AND ( field1 LIKE '%$word2%' OR field2 LIKE '%$word2%' ) |
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479 | else if ( $_GET['mode'] == 'AND' ) |
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480 | { |
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481 | if ( $i != 0 ) $page['where'].= ' AND'; |
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482 | $page['where'].= ' ('; |
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483 | foreach ( $fields as $j => $field ) { |
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484 | if ( $j != 0 ) $page['where'].= ' OR'; |
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485 | $page['where'].= ' '.$field." LIKE '%".$word."%'"; |
---|
486 | } |
---|
487 | $page['where'].= ' )'; |
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488 | } |
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489 | } |
---|
490 | $page['where'].= ' )'; |
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491 | if ( isset( $forbidden ) ) $page['where'].= ' AND '.$forbidden; |
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492 | |
---|
493 | $query = 'SELECT COUNT(DISTINCT(id)) AS nb_total_images'; |
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494 | $query.= ' FROM '.IMAGES_TABLE; |
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495 | $query.= ' INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic'; |
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496 | $query.= ' ON id = ic.image_id'; |
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497 | $query.= $page['where']; |
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498 | $query.= ';'; |
---|
499 | |
---|
500 | $url.= '&search='.$_GET['search'].'&mode='.$_GET['mode']; |
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501 | } |
---|
502 | // favorites displaying |
---|
503 | else if ( $page['cat'] == 'fav' ) |
---|
504 | { |
---|
505 | $page['title'] = $lang['favorites']; |
---|
506 | |
---|
507 | $page['where'] = ', '.FAVORITES_TABLE.' AS fav'; |
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508 | $page['where'].= ' WHERE user_id = '.$user['id']; |
---|
509 | $page['where'].= ' AND fav.image_id = id'; |
---|
510 | |
---|
511 | $query = 'SELECT COUNT(*) AS nb_total_images'; |
---|
512 | $query.= ' FROM '.FAVORITES_TABLE; |
---|
513 | $query.= ' WHERE user_id = '.$user['id']; |
---|
514 | $query.= ';'; |
---|
515 | } |
---|
516 | // pictures within the short period |
---|
517 | else if ( $page['cat'] == 'recent' ) |
---|
518 | { |
---|
519 | $page['title'] = $lang['recent_cat_title']; |
---|
520 | // We must find the date corresponding to : |
---|
521 | // today - $conf['periode_courte'] |
---|
522 | $date = time() - 60*60*24*$user['short_period']; |
---|
523 | $page['where'] = " WHERE date_available > '"; |
---|
524 | $page['where'].= date( 'Y-m-d', $date )."'"; |
---|
525 | if ( isset( $forbidden ) ) $page['where'].= ' AND '.$forbidden; |
---|
526 | |
---|
527 | $query = 'SELECT COUNT(DISTINCT(id)) AS nb_total_images'; |
---|
528 | $query.= ' FROM '.IMAGES_TABLE; |
---|
529 | $query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic'; |
---|
530 | $query.= ' ON id = ic.image_id'; |
---|
531 | $query.= $page['where']; |
---|
532 | $query.= ';'; |
---|
533 | } |
---|
534 | // most visited pictures |
---|
535 | else if ( $page['cat'] == 'most_visited' ) |
---|
536 | { |
---|
537 | $page['title'] = $conf['top_number'].' '.$lang['most_visited_cat']; |
---|
538 | |
---|
539 | if ( isset( $forbidden ) ) $page['where'] = ' WHERE '.$forbidden; |
---|
540 | else $page['where'] = ''; |
---|
541 | $conf['order_by'] = ' ORDER BY hit DESC, file ASC'; |
---|
542 | $page['cat_nb_images'] = $conf['top_number']; |
---|
543 | if ( isset( $page['start'] ) |
---|
544 | and ($page['start']+$user['nb_image_page']>=$conf['top_number'])) |
---|
545 | { |
---|
546 | $page['nb_image_page'] = $conf['top_number'] - $page['start']; |
---|
547 | } |
---|
548 | } |
---|
549 | |
---|
550 | if ( isset($query)) |
---|
551 | { |
---|
552 | $result = mysql_query( $query ); |
---|
553 | $row = mysql_fetch_array( $result ); |
---|
554 | $page['cat_nb_images'] = $row['nb_total_images']; |
---|
555 | } |
---|
556 | } |
---|
557 | if ( $calling_page == 'category' ) |
---|
558 | { |
---|
559 | $page['navigation_bar'] = |
---|
560 | create_navigation_bar( $url, $page['cat_nb_images'], $page['start'], |
---|
561 | $user['nb_image_page'], 'back' ); |
---|
562 | } |
---|
563 | } |
---|
564 | else |
---|
565 | { |
---|
566 | $page['title'] = $lang['diapo_default_page_title']; |
---|
567 | } |
---|
568 | pwg_debug( 'end initialize_category' ); |
---|
569 | } |
---|
570 | |
---|
571 | // get_non_empty_subcat_ids returns an array with sub-categories id |
---|
572 | // associated with their first non empty category id. |
---|
573 | // |
---|
574 | // example : |
---|
575 | // |
---|
576 | // - catname [cat_id] |
---|
577 | // - cat1 [1] -> given uppercat |
---|
578 | // - cat1.1 [12] (empty) |
---|
579 | // - cat1.1.1 [5] (empty) |
---|
580 | // - cat1.1.2 [6] |
---|
581 | // - cat1.2 [3] |
---|
582 | // - cat1.3 [4] |
---|
583 | // |
---|
584 | // get_non_empty_sub_cat_ids will return : |
---|
585 | // $ids[12] = 6; |
---|
586 | // $ids[3] = 3; |
---|
587 | // $ids[4] = 4; |
---|
588 | function get_non_empty_subcat_ids( $id_uppercat ) |
---|
589 | { |
---|
590 | global $user; |
---|
591 | |
---|
592 | $ids = array(); |
---|
593 | |
---|
594 | $query = 'SELECT id,nb_images'; |
---|
595 | $query.= ' FROM '.CATEGORIES_TABLE; |
---|
596 | $query.= ' WHERE id_uppercat '; |
---|
597 | if ( !is_numeric( $id_uppercat ) ) $query.= 'is NULL'; |
---|
598 | else $query.= '= '.$id_uppercat; |
---|
599 | // we must not show pictures of a forbidden category |
---|
600 | if ( $user['forbidden_categories'] != '' ) |
---|
601 | { |
---|
602 | $query.= ' AND id NOT IN ('.$user['forbidden_categories'].')'; |
---|
603 | } |
---|
604 | $query.= ' ORDER BY rank'; |
---|
605 | $query.= ';'; |
---|
606 | |
---|
607 | $result = mysql_query( $query ); |
---|
608 | while ( $row = mysql_fetch_array( $result ) ) |
---|
609 | { |
---|
610 | // only categories with findable picture in any of its subcats is |
---|
611 | // represented. |
---|
612 | if ( ( $row['nb_images'] != 0 and $non_empty_cat = $row['id'] ) |
---|
613 | or $non_empty_cat = get_first_non_empty_cat_id( $row['id'] ) ) |
---|
614 | { |
---|
615 | $ids[$row['id']] = $non_empty_cat; |
---|
616 | } |
---|
617 | } |
---|
618 | return $ids; |
---|
619 | } |
---|
620 | |
---|
621 | // get_first_non_empty_cat_id returns the id of the first non empty |
---|
622 | // sub-category to the given uppercat. If no picture is found in any |
---|
623 | // subcategory, false is returned. |
---|
624 | function get_first_non_empty_cat_id( $id_uppercat ) |
---|
625 | { |
---|
626 | global $user; |
---|
627 | |
---|
628 | $query = 'SELECT id,nb_images'; |
---|
629 | $query.= ' FROM '.CATEGORIES_TABLE; |
---|
630 | $query.= ' WHERE id_uppercat = '.$id_uppercat; |
---|
631 | // we must not show pictures of a forbidden category |
---|
632 | if ( $user['forbidden_categories'] != '' ) |
---|
633 | { |
---|
634 | $query.= ' AND id NOT IN ('.$user['forbidden_categories'].')'; |
---|
635 | } |
---|
636 | $query.= ' ORDER BY RAND()'; |
---|
637 | $query.= ';'; |
---|
638 | $result = mysql_query( $query ); |
---|
639 | while ( $row = mysql_fetch_array( $result ) ) |
---|
640 | { |
---|
641 | if ( $row['nb_images'] > 0 ) |
---|
642 | { |
---|
643 | return $row['id']; |
---|
644 | } |
---|
645 | } |
---|
646 | $result = mysql_query( $query ); |
---|
647 | while ( $row = mysql_fetch_array( $result ) ) |
---|
648 | { |
---|
649 | // recursive call |
---|
650 | if ( $subcat = get_first_non_empty_cat_id( $row['id'] ) ) |
---|
651 | { |
---|
652 | return $subcat; |
---|
653 | } |
---|
654 | } |
---|
655 | return false; |
---|
656 | } |
---|
657 | ?> |
---|