[4325] | 1 | <?php |
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| 2 | // +-----------------------------------------------------------------------+ |
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| 3 | // | Piwigo - a PHP based picture gallery | |
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| 4 | // +-----------------------------------------------------------------------+ |
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| 5 | // | Copyright(C) 2008-2009 Piwigo Team http://piwigo.org | |
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| 6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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| 7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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| 8 | // +-----------------------------------------------------------------------+ |
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| 9 | // | This program is free software; you can redistribute it and/or modify | |
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| 10 | // | it under the terms of the GNU General Public License as published by | |
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| 11 | // | the Free Software Foundation | |
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| 12 | // | | |
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| 13 | // | This program is distributed in the hope that it will be useful, but | |
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| 14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 16 | // | General Public License for more details. | |
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| 17 | // | | |
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| 18 | // | You should have received a copy of the GNU General Public License | |
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| 19 | // | along with this program; if not, write to the Free Software | |
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| 20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 21 | // | USA. | |
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| 22 | // +-----------------------------------------------------------------------+ |
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| 23 | |
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[4367] | 24 | define('DB_ENGINE', 'MySQL'); |
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| 25 | |
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| 26 | define('DB_REGEX_OPERATOR', 'REGEXP'); |
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| 27 | define('DB_RANDOM_FUNCTION', 'RAND'); |
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| 28 | |
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[4325] | 29 | /** |
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| 30 | * |
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| 31 | * simple functions |
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| 32 | * |
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| 33 | */ |
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| 34 | |
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| 35 | function pwg_db_connect($host, $user, $password, $database) |
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| 36 | { |
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| 37 | $link = mysql_connect($host, $user, $password) or my_error('mysql_connect', true); |
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| 38 | mysql_select_db($database, $link) or my_error('mysql_select_db', true); |
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| 39 | |
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| 40 | return $link; |
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| 41 | } |
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| 42 | |
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| 43 | function pwg_db_check_charset() |
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| 44 | { |
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| 45 | defined('PWG_CHARSET') and defined('DB_CHARSET') |
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| 46 | or fatal_error('PWG_CHARSET and/or DB_CHARSET is not defined'); |
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| 47 | if ( version_compare(mysql_get_server_info(), '4.1.0', '>=') ) |
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| 48 | { |
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| 49 | if (DB_CHARSET!='') |
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| 50 | { |
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| 51 | pwg_query('SET NAMES "'.DB_CHARSET.'"'); |
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| 52 | } |
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| 53 | } |
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| 54 | elseif ( strtolower(PWG_CHARSET)!='iso-8859-1' ) |
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| 55 | { |
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| 56 | fatal_error('PWG supports only iso-8859-1 charset on MySql version '.mysql_get_server_info()); |
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| 57 | } |
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| 58 | } |
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| 59 | |
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| 60 | function pwg_get_db_version() |
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| 61 | { |
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| 62 | list($mysql_version) = pwg_db_fetch_row(pwg_query('SELECT VERSION();')); |
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| 63 | |
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| 64 | return $mysql_version; |
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| 65 | } |
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| 66 | |
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| 67 | function pwg_query($query) |
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| 68 | { |
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| 69 | global $conf,$page,$debug,$t2; |
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| 70 | |
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| 71 | $start = get_moment(); |
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| 72 | ($result = mysql_query($query)) or my_error($query, $conf['die_on_sql_error']); |
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| 73 | |
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| 74 | $time = get_moment() - $start; |
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| 75 | |
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| 76 | if (!isset($page['count_queries'])) |
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| 77 | { |
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| 78 | $page['count_queries'] = 0; |
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| 79 | $page['queries_time'] = 0; |
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| 80 | } |
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| 81 | |
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| 82 | $page['count_queries']++; |
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| 83 | $page['queries_time']+= $time; |
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| 84 | |
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| 85 | if ($conf['show_queries']) |
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| 86 | { |
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| 87 | $output = ''; |
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| 88 | $output.= '<pre>['.$page['count_queries'].'] '; |
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| 89 | $output.= "\n".$query; |
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| 90 | $output.= "\n".'(this query time : '; |
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| 91 | $output.= '<b>'.number_format($time, 3, '.', ' ').' s)</b>'; |
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| 92 | $output.= "\n".'(total SQL time : '; |
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| 93 | $output.= number_format($page['queries_time'], 3, '.', ' ').' s)'; |
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| 94 | $output.= "\n".'(total time : '; |
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| 95 | $output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)'; |
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| 96 | if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) ) |
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| 97 | { |
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| 98 | $output.= "\n".'(num rows : '; |
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| 99 | $output.= mysql_num_rows($result).' )'; |
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| 100 | } |
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| 101 | elseif ( $result!=null |
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| 102 | and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query) ) |
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| 103 | { |
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| 104 | $output.= "\n".'(affected rows : '; |
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| 105 | $output.= mysql_affected_rows().' )'; |
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| 106 | } |
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| 107 | $output.= "</pre>\n"; |
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| 108 | |
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| 109 | $debug .= $output; |
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| 110 | } |
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| 111 | |
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| 112 | return $result; |
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| 113 | } |
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| 114 | |
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[4367] | 115 | function pwg_db_nextval($column, $table) |
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| 116 | { |
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| 117 | $query = ' |
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| 118 | SELECT IF(MAX('.$column.')+1 IS NULL, 1, MAX('.$column.')+1) |
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| 119 | FROM '.$table; |
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| 120 | list($next) = pwg_db_fetch_row(pwg_query($query)); |
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| 121 | |
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| 122 | return $next; |
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| 123 | } |
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| 124 | |
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[4325] | 125 | function pwg_db_changes($result) |
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| 126 | { |
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| 127 | return mysql_affected_rows($result); |
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| 128 | } |
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| 129 | |
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| 130 | function pwg_db_num_rows($result) |
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| 131 | { |
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| 132 | return mysql_num_rows($result); |
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| 133 | } |
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| 134 | |
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| 135 | function pwg_db_fetch_assoc($result) |
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| 136 | { |
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| 137 | return mysql_fetch_assoc($result); |
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| 138 | } |
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| 139 | |
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| 140 | function pwg_db_fetch_row($result) |
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| 141 | { |
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| 142 | return mysql_fetch_row($result); |
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| 143 | } |
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| 144 | |
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| 145 | function pwg_db_fetch_object($result) |
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| 146 | { |
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| 147 | return mysql_fetch_object($result); |
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| 148 | } |
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| 149 | |
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[4332] | 150 | function pwg_db_free_result($result) |
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[4325] | 151 | { |
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| 152 | return mysql_free_result($result); |
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| 153 | } |
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| 154 | |
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| 155 | function pwg_db_real_escape_string($s) |
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| 156 | { |
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| 157 | return mysql_real_escape_string($s); |
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| 158 | } |
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| 159 | |
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| 160 | function pwg_db_insert_id() |
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| 161 | { |
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| 162 | return mysql_insert_id(); |
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| 163 | } |
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| 164 | |
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| 165 | /** |
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| 166 | * |
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| 167 | * complex functions |
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| 168 | * |
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| 169 | */ |
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| 170 | |
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| 171 | /** |
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| 172 | * creates an array based on a query, this function is a very common pattern |
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| 173 | * used here |
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| 174 | * |
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| 175 | * @param string $query |
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| 176 | * @param string $fieldname |
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| 177 | * @return array |
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| 178 | */ |
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| 179 | function array_from_query($query, $fieldname) |
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| 180 | { |
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| 181 | $array = array(); |
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| 182 | |
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| 183 | $result = pwg_query($query); |
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| 184 | while ($row = mysql_fetch_assoc($result)) |
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| 185 | { |
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| 186 | array_push($array, $row[$fieldname]); |
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| 187 | } |
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| 188 | |
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| 189 | return $array; |
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| 190 | } |
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| 191 | |
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| 192 | define('MASS_UPDATES_SKIP_EMPTY', 1); |
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| 193 | /** |
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| 194 | * updates multiple lines in a table |
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| 195 | * |
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| 196 | * @param string table_name |
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| 197 | * @param array dbfields |
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| 198 | * @param array datas |
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| 199 | * @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones |
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| 200 | * @return void |
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| 201 | */ |
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| 202 | function mass_updates($tablename, $dbfields, $datas, $flags=0) |
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| 203 | { |
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| 204 | if (count($datas) == 0) |
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| 205 | return; |
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| 206 | // depending on the MySQL version, we use the multi table update or N update queries |
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| 207 | if (count($datas) < 10 or version_compare(mysql_get_server_info(), '4.0.4') < 0) |
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| 208 | { // MySQL is prior to version 4.0.4, multi table update feature is not available |
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| 209 | foreach ($datas as $data) |
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| 210 | { |
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| 211 | $query = ' |
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| 212 | UPDATE '.$tablename.' |
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| 213 | SET '; |
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| 214 | $is_first = true; |
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| 215 | foreach ($dbfields['update'] as $key) |
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| 216 | { |
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| 217 | $separator = $is_first ? '' : ",\n "; |
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| 218 | |
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| 219 | if (isset($data[$key]) and $data[$key] != '') |
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| 220 | { |
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| 221 | $query.= $separator.$key.' = \''.$data[$key].'\''; |
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| 222 | } |
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| 223 | else |
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| 224 | { |
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| 225 | if ($flags & MASS_UPDATES_SKIP_EMPTY ) |
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| 226 | continue; // next field |
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| 227 | $query.= "$separator$key = NULL"; |
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| 228 | } |
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| 229 | $is_first = false; |
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| 230 | } |
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| 231 | if (!$is_first) |
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| 232 | {// only if one field at least updated |
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| 233 | $query.= ' |
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| 234 | WHERE '; |
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| 235 | $is_first = true; |
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| 236 | foreach ($dbfields['primary'] as $key) |
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| 237 | { |
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| 238 | if (!$is_first) |
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| 239 | { |
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| 240 | $query.= ' AND '; |
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| 241 | } |
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| 242 | if ( isset($data[$key]) ) |
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| 243 | { |
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| 244 | $query.= $key.' = \''.$data[$key].'\''; |
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| 245 | } |
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| 246 | else |
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| 247 | { |
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| 248 | $query.= $key.' IS NULL'; |
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| 249 | } |
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| 250 | $is_first = false; |
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| 251 | } |
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| 252 | pwg_query($query); |
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| 253 | } |
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| 254 | } // foreach update |
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| 255 | } // if mysql_ver or count<X |
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| 256 | else |
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| 257 | { |
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| 258 | // creation of the temporary table |
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| 259 | $query = ' |
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| 260 | SHOW FULL COLUMNS FROM '.$tablename; |
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| 261 | $result = pwg_query($query); |
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| 262 | $columns = array(); |
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| 263 | $all_fields = array_merge($dbfields['primary'], $dbfields['update']); |
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| 264 | while ($row = pwg_db_fetch_assoc($result)) |
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| 265 | { |
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| 266 | if (in_array($row['Field'], $all_fields)) |
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| 267 | { |
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| 268 | $column = $row['Field']; |
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| 269 | $column.= ' '.$row['Type']; |
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| 270 | |
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| 271 | $nullable = true; |
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| 272 | if (!isset($row['Null']) or $row['Null'] == '' or $row['Null']=='NO') |
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| 273 | { |
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| 274 | $column.= ' NOT NULL'; |
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| 275 | $nullable = false; |
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| 276 | } |
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| 277 | if (isset($row['Default'])) |
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| 278 | { |
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| 279 | $column.= " default '".$row['Default']."'"; |
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| 280 | } |
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| 281 | elseif ($nullable) |
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| 282 | { |
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| 283 | $column.= " default NULL"; |
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| 284 | } |
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| 285 | if (isset($row['Collation']) and $row['Collation'] != 'NULL') |
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| 286 | { |
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| 287 | $column.= " collate '".$row['Collation']."'"; |
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| 288 | } |
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| 289 | array_push($columns, $column); |
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| 290 | } |
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| 291 | } |
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| 292 | |
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| 293 | $temporary_tablename = $tablename.'_'.micro_seconds(); |
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| 294 | |
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| 295 | $query = ' |
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| 296 | CREATE TABLE '.$temporary_tablename.' |
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| 297 | ( |
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| 298 | '.implode(",\n ", $columns).', |
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| 299 | UNIQUE KEY the_key ('.implode(',', $dbfields['primary']).') |
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| 300 | )'; |
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| 301 | |
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| 302 | pwg_query($query); |
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| 303 | mass_inserts($temporary_tablename, $all_fields, $datas); |
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| 304 | if ( $flags & MASS_UPDATES_SKIP_EMPTY ) |
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| 305 | $func_set = create_function('$s', 'return "t1.$s = IFNULL(t2.$s, t1.$s)";'); |
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| 306 | else |
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| 307 | $func_set = create_function('$s', 'return "t1.$s = t2.$s";'); |
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| 308 | |
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| 309 | // update of images table by joining with temporary table |
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| 310 | $query = ' |
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| 311 | UPDATE '.$tablename.' AS t1, '.$temporary_tablename.' AS t2 |
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| 312 | SET '. |
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| 313 | implode( |
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| 314 | "\n , ", |
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| 315 | array_map($func_set,$dbfields['update']) |
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| 316 | ).' |
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| 317 | WHERE '. |
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| 318 | implode( |
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| 319 | "\n AND ", |
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| 320 | array_map( |
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| 321 | create_function('$s', 'return "t1.$s = t2.$s";'), |
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| 322 | $dbfields['primary'] |
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| 323 | ) |
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| 324 | ); |
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| 325 | pwg_query($query); |
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| 326 | $query = ' |
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| 327 | DROP TABLE '.$temporary_tablename; |
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| 328 | pwg_query($query); |
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| 329 | } |
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| 330 | } |
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| 331 | |
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| 332 | |
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| 333 | /** |
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| 334 | * inserts multiple lines in a table |
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| 335 | * |
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| 336 | * @param string table_name |
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| 337 | * @param array dbfields |
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| 338 | * @param array inserts |
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| 339 | * @return void |
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| 340 | */ |
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| 341 | function mass_inserts($table_name, $dbfields, $datas) |
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| 342 | { |
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| 343 | if (count($datas) != 0) |
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| 344 | { |
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| 345 | $first = true; |
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| 346 | |
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| 347 | $query = 'SHOW VARIABLES LIKE \'max_allowed_packet\''; |
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| 348 | list(, $packet_size) = pwg_db_fetch_row(pwg_query($query)); |
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| 349 | $packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/ |
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| 350 | $query = ''; |
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| 351 | |
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| 352 | foreach ($datas as $insert) |
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| 353 | { |
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| 354 | if (strlen($query) >= $packet_size) |
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| 355 | { |
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| 356 | pwg_query($query); |
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| 357 | $first = true; |
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| 358 | } |
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| 359 | |
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| 360 | if ($first) |
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| 361 | { |
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| 362 | $query = ' |
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| 363 | INSERT INTO '.$table_name.' |
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| 364 | ('.implode(',', $dbfields).') |
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| 365 | VALUES'; |
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| 366 | $first = false; |
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| 367 | } |
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| 368 | else |
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| 369 | { |
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| 370 | $query .= ' |
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| 371 | , '; |
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| 372 | } |
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| 373 | |
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| 374 | $query .= '('; |
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| 375 | foreach ($dbfields as $field_id => $dbfield) |
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| 376 | { |
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| 377 | if ($field_id > 0) |
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| 378 | { |
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| 379 | $query .= ','; |
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| 380 | } |
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| 381 | |
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| 382 | if (!isset($insert[$dbfield]) or $insert[$dbfield] === '') |
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| 383 | { |
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| 384 | $query .= 'NULL'; |
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| 385 | } |
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| 386 | else |
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| 387 | { |
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| 388 | $query .= "'".$insert[$dbfield]."'"; |
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| 389 | } |
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| 390 | } |
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| 391 | $query .= ')'; |
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| 392 | } |
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| 393 | pwg_query($query); |
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| 394 | } |
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| 395 | } |
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| 396 | |
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| 397 | /** |
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| 398 | * Do maintenance on all PWG tables |
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| 399 | * |
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| 400 | * @return none |
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| 401 | */ |
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| 402 | function do_maintenance_all_tables() |
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| 403 | { |
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| 404 | global $prefixeTable, $page; |
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| 405 | |
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| 406 | $all_tables = array(); |
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| 407 | |
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| 408 | // List all tables |
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| 409 | $query = 'SHOW TABLES LIKE \''.$prefixeTable.'%\''; |
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| 410 | $result = pwg_query($query); |
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[4335] | 411 | while ($row = pwg_db_fetch_row($result)) |
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[4325] | 412 | { |
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| 413 | array_push($all_tables, $row[0]); |
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| 414 | } |
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| 415 | |
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| 416 | // Repair all tables |
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| 417 | $query = 'REPAIR TABLE '.implode(', ', $all_tables); |
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| 418 | $mysql_rc = pwg_query($query); |
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| 419 | |
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| 420 | // Re-Order all tables |
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| 421 | foreach ($all_tables as $table_name) |
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| 422 | { |
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| 423 | $all_primary_key = array(); |
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| 424 | |
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| 425 | $query = 'DESC '.$table_name.';'; |
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| 426 | $result = pwg_query($query); |
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| 427 | while ($row = pwg_db_fetch_assoc($result)) |
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| 428 | { |
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| 429 | if ($row['Key'] == 'PRI') |
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| 430 | { |
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| 431 | array_push($all_primary_key, $row['Field']); |
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| 432 | } |
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| 433 | } |
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| 434 | |
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| 435 | if (count($all_primary_key) != 0) |
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| 436 | { |
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| 437 | $query = 'ALTER TABLE '.$table_name.' ORDER BY '.implode(', ', $all_primary_key).';'; |
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| 438 | $mysql_rc = $mysql_rc && pwg_query($query); |
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| 439 | } |
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| 440 | } |
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| 441 | |
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| 442 | // Optimize all tables |
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| 443 | $query = 'OPTIMIZE TABLE '.implode(', ', $all_tables); |
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| 444 | $mysql_rc = $mysql_rc && pwg_query($query); |
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| 445 | if ($mysql_rc) |
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| 446 | { |
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| 447 | array_push( |
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| 448 | $page['infos'], |
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| 449 | l10n('Optimizations completed') |
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| 450 | ); |
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| 451 | } |
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| 452 | else |
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| 453 | { |
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| 454 | array_push( |
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| 455 | $page['errors'], |
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| 456 | l10n('Optimizations errors') |
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| 457 | ); |
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| 458 | } |
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| 459 | } |
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| 460 | |
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[4781] | 461 | function pwg_db_concat_ws($array, $separator) |
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[4367] | 462 | { |
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[4781] | 463 | $string = implode($array, ','); |
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| 464 | return 'CONCAT_WS(\''.$separator.'\','. $string.')'; |
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[4367] | 465 | } |
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| 466 | |
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[4387] | 467 | function pwg_db_cast_to_text($string) |
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[4367] | 468 | { |
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[4387] | 469 | return 'CAST('.$string.' AS CHAR)'; |
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[4367] | 470 | } |
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| 471 | |
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| 472 | /** |
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| 473 | * returns an array containing the possible values of an enum field |
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| 474 | * |
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| 475 | * @param string tablename |
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| 476 | * @param string fieldname |
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| 477 | */ |
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| 478 | function get_enums($table, $field) |
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| 479 | { |
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| 480 | // retrieving the properties of the table. Each line represents a field : |
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| 481 | // columns are 'Field', 'Type' |
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| 482 | $result = pwg_query('desc '.$table); |
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| 483 | while ($row = pwg_db_fetch_assoc($result)) |
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| 484 | { |
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| 485 | // we are only interested in the the field given in parameter for the |
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| 486 | // function |
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| 487 | if ($row['Field'] == $field) |
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| 488 | { |
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| 489 | // retrieving possible values of the enum field |
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| 490 | // enum('blue','green','black') |
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| 491 | $options = explode(',', substr($row['Type'], 5, -1)); |
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| 492 | foreach ($options as $i => $option) |
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| 493 | { |
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| 494 | $options[$i] = str_replace("'", '',$option); |
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| 495 | } |
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| 496 | } |
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| 497 | } |
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| 498 | pwg_db_free_result($result); |
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| 499 | return $options; |
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| 500 | } |
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| 501 | |
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| 502 | // get_boolean transforms a string to a boolean value. If the string is |
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| 503 | // "false" (case insensitive), then the boolean value false is returned. In |
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| 504 | // any other case, true is returned. |
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| 505 | function get_boolean( $string ) |
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| 506 | { |
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| 507 | $boolean = true; |
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| 508 | if ( 'false' == strtolower($string) ) |
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| 509 | { |
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| 510 | $boolean = false; |
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| 511 | } |
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| 512 | return $boolean; |
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| 513 | } |
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| 514 | |
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| 515 | /** |
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| 516 | * returns boolean string 'true' or 'false' if the given var is boolean |
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| 517 | * |
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| 518 | * @param mixed $var |
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| 519 | * @return mixed |
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| 520 | */ |
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| 521 | function boolean_to_string($var) |
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| 522 | { |
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| 523 | if (is_bool($var)) |
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| 524 | { |
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| 525 | return $var ? 'true' : 'false'; |
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| 526 | } |
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| 527 | else |
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| 528 | { |
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| 529 | return $var; |
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| 530 | } |
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| 531 | } |
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| 532 | |
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[4385] | 533 | /** |
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| 534 | * |
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| 535 | * interval and date functions |
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| 536 | * |
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| 537 | */ |
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| 538 | |
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| 539 | |
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| 540 | function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE') |
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| 541 | { |
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| 542 | if ($date!='CURRENT_DATE') |
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| 543 | { |
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| 544 | $date = '\''.$date.'\''; |
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| 545 | } |
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| 546 | |
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| 547 | return 'SUBDATE('.$date.',INTERVAL '.$period.' DAY)'; |
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| 548 | } |
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| 549 | |
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| 550 | function pwg_db_get_recent_period($period, $date='CURRENT_DATE') |
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| 551 | { |
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| 552 | $query = ' |
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| 553 | SELECT '.pwg_db_get_recent_period_expression($period); |
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| 554 | list($d) = pwg_db_fetch_row(pwg_query($query)); |
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| 555 | |
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| 556 | return $d; |
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| 557 | } |
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| 558 | |
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| 559 | function pwg_db_get_date_YYYYMM($date) |
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| 560 | { |
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| 561 | return 'DATE_FORMAT('.$date.', \'%Y%m\')'; |
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| 562 | } |
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| 563 | |
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| 564 | function pwg_db_get_date_MMDD($date) |
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| 565 | { |
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| 566 | return 'DATE_FORMAT('.$date.', \'%m%d\')'; |
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| 567 | } |
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| 568 | |
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| 569 | function pwg_db_get_year($date) |
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| 570 | { |
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| 571 | return 'YEAR('.$date.')'; |
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| 572 | } |
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| 573 | |
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| 574 | function pwg_db_get_month($date) |
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| 575 | { |
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| 576 | return 'MONTH('.$date.')'; |
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| 577 | } |
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| 578 | |
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| 579 | function pwg_db_get_week($date, $mode=null) |
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| 580 | { |
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| 581 | if ($mode) |
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| 582 | { |
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| 583 | return 'WEEK('.$date.', '.$mode.')'; |
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| 584 | } |
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| 585 | else |
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| 586 | { |
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| 587 | return 'WEEK('.$date.')'; |
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| 588 | } |
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| 589 | } |
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| 590 | |
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| 591 | function pwg_db_get_dayofmonth($date) |
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| 592 | { |
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| 593 | return 'DAYOFMONTH('.$date.')'; |
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| 594 | } |
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| 595 | |
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| 596 | function pwg_db_get_dayofweek($date) |
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| 597 | { |
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| 598 | return 'DAYOFWEEK('.$date.')'; |
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| 599 | } |
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| 600 | |
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| 601 | function pwg_db_get_weekday($date) |
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| 602 | { |
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| 603 | return 'WEEKDAY('.$date.')'; |
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| 604 | } |
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| 605 | |
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[4325] | 606 | // my_error returns (or send to standard output) the message concerning the |
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| 607 | // error occured for the last mysql query. |
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| 608 | function my_error($header, $die) |
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| 609 | { |
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| 610 | $error = "[mysql error ".mysql_errno().'] '.mysql_error()."\n"; |
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| 611 | $error .= $header; |
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| 612 | |
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| 613 | if ($die) |
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| 614 | { |
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| 615 | fatal_error($error); |
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| 616 | } |
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| 617 | echo("<pre>"); |
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| 618 | trigger_error($error, E_USER_WARNING); |
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| 619 | echo("</pre>"); |
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| 620 | } |
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| 621 | |
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| 622 | ?> |
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