[20462] | 1 | <?php |
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| 2 | // +-----------------------------------------------------------------------+ |
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| 3 | // | Piwigo - a PHP based photo gallery | |
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| 4 | // +-----------------------------------------------------------------------+ |
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| 5 | // | Copyright(C) 2008-2012 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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| 24 | define('DB_ENGINE', 'MySQL'); |
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| 25 | define('REQUIRED_MYSQL_VERSION', '5.0.0'); |
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| 26 | |
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| 27 | define('DB_REGEX_OPERATOR', 'REGEXP'); |
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| 28 | define('DB_RANDOM_FUNCTION', 'RAND'); |
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| 29 | |
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| 30 | /** |
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| 31 | * |
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| 32 | * simple functions |
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| 33 | * |
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| 34 | */ |
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| 35 | |
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| 36 | function pwg_db_connect($host, $user, $password, $database) |
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| 37 | { |
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| 38 | global $mysqli; |
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| 39 | |
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| 40 | $mysqli = new mysqli($host, $user, $password); |
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| 41 | if (mysqli_connect_error()) |
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| 42 | { |
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| 43 | throw new Exception("Can't connect to server"); |
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| 44 | } |
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| 45 | if (!$mysqli->select_db($database)) |
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| 46 | { |
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| 47 | throw new Exception('Connection to server succeed, but it was impossible to connect to database'); |
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| 48 | } |
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| 49 | } |
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| 50 | |
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| 51 | function pwg_db_check_charset() |
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| 52 | { |
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| 53 | $db_charset = 'utf8'; |
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| 54 | if (defined('DB_CHARSET') and DB_CHARSET != '') |
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| 55 | { |
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| 56 | $db_charset = DB_CHARSET; |
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| 57 | } |
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| 58 | pwg_query('SET NAMES "'.$db_charset.'"'); |
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| 59 | } |
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| 60 | |
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| 61 | function pwg_db_check_version() |
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| 62 | { |
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| 63 | $current_mysql = pwg_get_db_version(); |
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| 64 | if (version_compare($current_mysql, REQUIRED_MYSQL_VERSION, '<')) |
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| 65 | { |
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| 66 | fatal_error( |
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| 67 | sprintf( |
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| 68 | 'your MySQL version is too old, you have "%s" and you need at least "%s"', |
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| 69 | $current_mysql, |
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| 70 | REQUIRED_MYSQL_VERSION |
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| 71 | ) |
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| 72 | ); |
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| 73 | } |
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| 74 | } |
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| 75 | |
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| 76 | function pwg_get_db_version() |
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| 77 | { |
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| 78 | global $mysqli; |
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| 79 | |
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| 80 | return $mysqli->server_info; |
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| 81 | } |
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| 82 | |
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| 83 | function pwg_query($query) |
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| 84 | { |
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| 85 | global $mysqli, $conf, $page, $debug, $t2; |
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| 86 | |
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| 87 | $start = microtime(true); |
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| 88 | ($result = $mysqli->query($query)) or my_error($query, $conf['die_on_sql_error']); |
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| 89 | |
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| 90 | $time = microtime(true) - $start; |
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| 91 | |
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| 92 | if (!isset($page['count_queries'])) |
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| 93 | { |
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| 94 | $page['count_queries'] = 0; |
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| 95 | $page['queries_time'] = 0; |
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| 96 | } |
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| 97 | |
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| 98 | $page['count_queries']++; |
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| 99 | $page['queries_time']+= $time; |
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| 100 | |
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| 101 | if ($conf['show_queries']) |
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| 102 | { |
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| 103 | $output = ''; |
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| 104 | $output.= '<pre>['.$page['count_queries'].'] '; |
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| 105 | $output.= "\n".$query; |
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| 106 | $output.= "\n".'(this query time : '; |
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| 107 | $output.= '<b>'.number_format($time, 3, '.', ' ').' s)</b>'; |
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| 108 | $output.= "\n".'(total SQL time : '; |
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| 109 | $output.= number_format($page['queries_time'], 3, '.', ' ').' s)'; |
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| 110 | $output.= "\n".'(total time : '; |
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| 111 | $output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)'; |
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| 112 | if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) ) |
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| 113 | { |
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| 114 | $output.= "\n".'(num rows : '; |
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| 115 | $output.= pwg_db_num_rows($result).' )'; |
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| 116 | } |
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| 117 | elseif ( $result!=null |
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| 118 | and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query) ) |
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| 119 | { |
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| 120 | $output.= "\n".'(affected rows : '; |
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| 121 | $output.= pwg_db_changes().' )'; |
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| 122 | } |
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| 123 | $output.= "</pre>\n"; |
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| 124 | |
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| 125 | $debug .= $output; |
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| 126 | } |
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| 127 | |
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| 128 | return $result; |
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| 129 | } |
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| 130 | |
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| 131 | function pwg_db_nextval($column, $table) |
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| 132 | { |
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| 133 | $query = ' |
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| 134 | SELECT IF(MAX('.$column.')+1 IS NULL, 1, MAX('.$column.')+1) |
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| 135 | FROM '.$table; |
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| 136 | list($next) = pwg_db_fetch_row(pwg_query($query)); |
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| 137 | |
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| 138 | return $next; |
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| 139 | } |
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| 140 | |
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| 141 | function pwg_db_changes() |
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| 142 | { |
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| 143 | global $mysqli; |
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| 144 | |
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| 145 | return $mysqli->affected_rows; |
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| 146 | } |
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| 147 | |
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| 148 | function pwg_db_num_rows($result) |
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| 149 | { |
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| 150 | return $result->num_rows; |
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| 151 | } |
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| 152 | |
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[20510] | 153 | function pwg_db_fetch_array($result) |
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| 154 | { |
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| 155 | return $result->fetch_array(); |
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| 156 | } |
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| 157 | |
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[20462] | 158 | function pwg_db_fetch_assoc($result) |
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| 159 | { |
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| 160 | return $result->fetch_assoc(); |
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| 161 | } |
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| 162 | |
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| 163 | function pwg_db_fetch_row($result) |
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| 164 | { |
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| 165 | return $result->fetch_row(); |
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| 166 | } |
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| 167 | |
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| 168 | function pwg_db_fetch_object($result) |
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| 169 | { |
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| 170 | return $result->fetch_object(); |
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| 171 | } |
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| 172 | |
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| 173 | function pwg_db_free_result($result) |
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| 174 | { |
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| 175 | return $result->free_result(); |
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| 176 | } |
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| 177 | |
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| 178 | function pwg_db_real_escape_string($s) |
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| 179 | { |
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| 180 | global $mysqli; |
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| 181 | |
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| 182 | return $mysqli->real_escape_string($s); |
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| 183 | } |
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| 184 | |
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| 185 | function pwg_db_insert_id() |
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| 186 | { |
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| 187 | global $mysqli; |
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| 188 | |
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| 189 | return $mysqli->insert_id; |
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| 190 | } |
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| 191 | |
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[21088] | 192 | function pwg_db_errno() |
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| 193 | { |
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| 194 | global $mysqli; |
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| 195 | |
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| 196 | return $mysqli->errno; |
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| 197 | } |
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| 198 | |
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| 199 | function pwg_db_error() |
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| 200 | { |
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| 201 | global $mysqli; |
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| 202 | |
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| 203 | return $mysqli->error; |
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| 204 | } |
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| 205 | |
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[20462] | 206 | function pwg_db_close() |
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| 207 | { |
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| 208 | global $mysqli; |
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| 209 | |
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| 210 | return $mysqli->close(); |
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| 211 | } |
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| 212 | |
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| 213 | /** |
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| 214 | * |
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| 215 | * complex functions |
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| 216 | * |
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| 217 | */ |
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| 218 | |
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| 219 | /** |
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| 220 | * creates an array based on a query, this function is a very common pattern |
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| 221 | * used here |
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| 222 | * |
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| 223 | * @param string $query |
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| 224 | * @param string $fieldname optional |
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| 225 | * @return array |
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| 226 | */ |
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| 227 | function array_from_query($query, $fieldname=false) |
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| 228 | { |
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| 229 | $array = array(); |
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| 230 | |
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| 231 | $result = pwg_query($query); |
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| 232 | if (false === $fieldname) |
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| 233 | { |
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| 234 | while ($row = pwg_db_fetch_assoc($result)) |
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| 235 | { |
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| 236 | $array[] = $row; |
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| 237 | } |
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| 238 | } |
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| 239 | else |
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| 240 | { |
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| 241 | while ($row = pwg_db_fetch_assoc($result)) |
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| 242 | { |
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| 243 | $array[] = $row[$fieldname]; |
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| 244 | } |
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| 245 | } |
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| 246 | return $array; |
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| 247 | } |
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| 248 | |
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| 249 | define('MASS_UPDATES_SKIP_EMPTY', 1); |
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| 250 | /** |
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| 251 | * updates multiple lines in a table |
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| 252 | * |
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| 253 | * @param string table_name |
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| 254 | * @param array dbfields |
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| 255 | * @param array datas |
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| 256 | * @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones |
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| 257 | * @return void |
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| 258 | */ |
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| 259 | function mass_updates($tablename, $dbfields, $datas, $flags=0) |
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| 260 | { |
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| 261 | if (count($datas) == 0) |
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| 262 | return; |
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| 263 | |
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| 264 | // depending on the MySQL version, we use the multi table update or N update queries |
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| 265 | if (count($datas) < 10) |
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| 266 | { |
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| 267 | foreach ($datas as $data) |
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| 268 | { |
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| 269 | $query = ' |
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| 270 | UPDATE '.$tablename.' |
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| 271 | SET '; |
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| 272 | $is_first = true; |
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| 273 | foreach ($dbfields['update'] as $key) |
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| 274 | { |
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| 275 | $separator = $is_first ? '' : ",\n "; |
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| 276 | |
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| 277 | if (isset($data[$key]) and $data[$key] != '') |
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| 278 | { |
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| 279 | $query.= $separator.$key.' = \''.$data[$key].'\''; |
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| 280 | } |
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| 281 | else |
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| 282 | { |
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| 283 | if ( $flags & MASS_UPDATES_SKIP_EMPTY ) |
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| 284 | continue; // next field |
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| 285 | $query.= "$separator$key = NULL"; |
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| 286 | } |
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| 287 | $is_first = false; |
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| 288 | } |
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| 289 | if (!$is_first) |
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| 290 | {// only if one field at least updated |
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| 291 | $query.= ' |
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| 292 | WHERE '; |
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| 293 | $is_first = true; |
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| 294 | foreach ($dbfields['primary'] as $key) |
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| 295 | { |
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| 296 | if (!$is_first) |
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| 297 | { |
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| 298 | $query.= ' AND '; |
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| 299 | } |
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| 300 | if ( isset($data[$key]) ) |
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| 301 | { |
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| 302 | $query.= $key.' = \''.$data[$key].'\''; |
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| 303 | } |
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| 304 | else |
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| 305 | { |
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| 306 | $query.= $key.' IS NULL'; |
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| 307 | } |
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| 308 | $is_first = false; |
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| 309 | } |
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| 310 | pwg_query($query); |
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| 311 | } |
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| 312 | } // foreach update |
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| 313 | } // if mysqli_ver or count<X |
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| 314 | else |
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| 315 | { |
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| 316 | // creation of the temporary table |
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| 317 | $query = ' |
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| 318 | SHOW FULL COLUMNS FROM '.$tablename; |
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| 319 | $result = pwg_query($query); |
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| 320 | $columns = array(); |
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| 321 | $all_fields = array_merge($dbfields['primary'], $dbfields['update']); |
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| 322 | while ($row = pwg_db_fetch_assoc($result)) |
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| 323 | { |
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| 324 | if (in_array($row['Field'], $all_fields)) |
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| 325 | { |
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| 326 | $column = $row['Field']; |
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| 327 | $column.= ' '.$row['Type']; |
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| 328 | |
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| 329 | $nullable = true; |
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| 330 | if (!isset($row['Null']) or $row['Null'] == '' or $row['Null']=='NO') |
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| 331 | { |
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| 332 | $column.= ' NOT NULL'; |
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| 333 | $nullable = false; |
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| 334 | } |
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| 335 | if (isset($row['Default'])) |
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| 336 | { |
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| 337 | $column.= " default '".$row['Default']."'"; |
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| 338 | } |
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| 339 | elseif ($nullable) |
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| 340 | { |
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| 341 | $column.= " default NULL"; |
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| 342 | } |
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| 343 | if (isset($row['Collation']) and $row['Collation'] != 'NULL') |
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| 344 | { |
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| 345 | $column.= " collate '".$row['Collation']."'"; |
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| 346 | } |
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| 347 | array_push($columns, $column); |
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| 348 | } |
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| 349 | } |
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| 350 | |
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| 351 | $temporary_tablename = $tablename.'_'.micro_seconds(); |
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| 352 | |
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| 353 | $query = ' |
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| 354 | CREATE TABLE '.$temporary_tablename.' |
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| 355 | ( |
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| 356 | '.implode(",\n ", $columns).', |
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| 357 | UNIQUE KEY the_key ('.implode(',', $dbfields['primary']).') |
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| 358 | )'; |
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| 359 | |
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| 360 | pwg_query($query); |
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| 361 | mass_inserts($temporary_tablename, $all_fields, $datas); |
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| 362 | if ( $flags & MASS_UPDATES_SKIP_EMPTY ) |
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| 363 | $func_set = create_function('$s', 'return "t1.$s = IFNULL(t2.$s, t1.$s)";'); |
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| 364 | else |
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| 365 | $func_set = create_function('$s', 'return "t1.$s = t2.$s";'); |
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| 366 | |
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| 367 | // update of images table by joining with temporary table |
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| 368 | $query = ' |
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| 369 | UPDATE '.$tablename.' AS t1, '.$temporary_tablename.' AS t2 |
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| 370 | SET '. |
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| 371 | implode( |
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| 372 | "\n , ", |
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| 373 | array_map($func_set,$dbfields['update']) |
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| 374 | ).' |
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| 375 | WHERE '. |
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| 376 | implode( |
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| 377 | "\n AND ", |
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| 378 | array_map( |
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| 379 | create_function('$s', 'return "t1.$s = t2.$s";'), |
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| 380 | $dbfields['primary'] |
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| 381 | ) |
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| 382 | ); |
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| 383 | pwg_query($query); |
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| 384 | $query = ' |
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| 385 | DROP TABLE '.$temporary_tablename; |
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| 386 | pwg_query($query); |
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| 387 | } |
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| 388 | } |
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| 389 | |
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| 390 | /** |
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| 391 | * updates one line in a table |
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| 392 | * |
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| 393 | * @param string table_name |
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| 394 | * @param array set_fields |
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| 395 | * @param array where_fields |
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| 396 | * @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones |
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| 397 | * @return void |
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| 398 | */ |
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| 399 | function single_update($tablename, $set_fields, $where_fields, $flags=0) |
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| 400 | { |
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| 401 | if (count($set_fields) == 0) |
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| 402 | { |
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| 403 | return; |
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| 404 | } |
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| 405 | |
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| 406 | $query = ' |
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| 407 | UPDATE '.$tablename.' |
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| 408 | SET '; |
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| 409 | $is_first = true; |
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| 410 | foreach ($set_fields as $key => $value) |
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| 411 | { |
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| 412 | $separator = $is_first ? '' : ",\n "; |
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| 413 | |
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| 414 | if (isset($value) and $value !== '') |
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| 415 | { |
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| 416 | $query.= $separator.$key.' = \''.$value.'\''; |
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| 417 | } |
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| 418 | else |
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| 419 | { |
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| 420 | if ( $flags & MASS_UPDATES_SKIP_EMPTY ) |
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| 421 | continue; // next field |
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| 422 | $query.= "$separator$key = NULL"; |
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| 423 | } |
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| 424 | $is_first = false; |
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| 425 | } |
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| 426 | if (!$is_first) |
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| 427 | {// only if one field at least updated |
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| 428 | $query.= ' |
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| 429 | WHERE '; |
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| 430 | $is_first = true; |
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| 431 | foreach ($where_fields as $key => $value) |
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| 432 | { |
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| 433 | if (!$is_first) |
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| 434 | { |
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| 435 | $query.= ' AND '; |
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| 436 | } |
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| 437 | if ( isset($value) ) |
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| 438 | { |
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| 439 | $query.= $key.' = \''.$value.'\''; |
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| 440 | } |
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| 441 | else |
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| 442 | { |
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| 443 | $query.= $key.' IS NULL'; |
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| 444 | } |
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| 445 | $is_first = false; |
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| 446 | } |
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| 447 | pwg_query($query); |
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| 448 | } |
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| 449 | } |
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| 450 | |
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| 451 | |
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| 452 | /** |
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| 453 | * inserts multiple lines in a table |
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| 454 | * |
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| 455 | * @param string table_name |
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| 456 | * @param array dbfields |
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| 457 | * @param array inserts |
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| 458 | * @return void |
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| 459 | */ |
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| 460 | function mass_inserts($table_name, $dbfields, $datas, $options=array()) |
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| 461 | { |
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| 462 | $ignore = ''; |
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| 463 | if (isset($options['ignore']) and $options['ignore']) |
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| 464 | { |
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| 465 | $ignore = 'IGNORE'; |
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| 466 | } |
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| 467 | |
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| 468 | if (count($datas) != 0) |
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| 469 | { |
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| 470 | $first = true; |
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| 471 | |
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| 472 | $query = 'SHOW VARIABLES LIKE \'max_allowed_packet\''; |
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| 473 | list(, $packet_size) = pwg_db_fetch_row(pwg_query($query)); |
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| 474 | $packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/ |
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| 475 | $query = ''; |
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| 476 | |
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| 477 | foreach ($datas as $insert) |
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| 478 | { |
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| 479 | if (strlen($query) >= $packet_size) |
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| 480 | { |
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| 481 | pwg_query($query); |
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| 482 | $first = true; |
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| 483 | } |
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| 484 | |
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| 485 | if ($first) |
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| 486 | { |
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| 487 | $query = ' |
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| 488 | INSERT '.$ignore.' INTO '.$table_name.' |
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| 489 | ('.implode(',', $dbfields).') |
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| 490 | VALUES'; |
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| 491 | $first = false; |
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| 492 | } |
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| 493 | else |
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| 494 | { |
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| 495 | $query .= ' |
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| 496 | , '; |
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| 497 | } |
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| 498 | |
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| 499 | $query .= '('; |
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| 500 | foreach ($dbfields as $field_id => $dbfield) |
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| 501 | { |
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| 502 | if ($field_id > 0) |
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| 503 | { |
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| 504 | $query .= ','; |
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| 505 | } |
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| 506 | |
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| 507 | if (!isset($insert[$dbfield]) or $insert[$dbfield] === '') |
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| 508 | { |
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| 509 | $query .= 'NULL'; |
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| 510 | } |
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| 511 | else |
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| 512 | { |
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| 513 | $query .= "'".$insert[$dbfield]."'"; |
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| 514 | } |
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| 515 | } |
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| 516 | $query .= ')'; |
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| 517 | } |
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| 518 | pwg_query($query); |
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| 519 | } |
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| 520 | } |
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| 521 | |
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| 522 | /** |
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| 523 | * inserts one line in a table |
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| 524 | * |
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| 525 | * @param string table_name |
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| 526 | * @param array dbfields |
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| 527 | * @param array insert |
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| 528 | * @return void |
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| 529 | */ |
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| 530 | function single_insert($table_name, $data) |
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| 531 | { |
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| 532 | if (count($data) != 0) |
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| 533 | { |
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| 534 | $query = ' |
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| 535 | INSERT INTO '.$table_name.' |
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| 536 | ('.implode(',', array_keys($data)).') |
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| 537 | VALUES'; |
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| 538 | |
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| 539 | $query .= '('; |
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| 540 | $is_first = true; |
---|
| 541 | foreach ($data as $key => $value) |
---|
| 542 | { |
---|
| 543 | if (!$is_first) |
---|
| 544 | { |
---|
| 545 | $query .= ','; |
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| 546 | } |
---|
| 547 | else |
---|
| 548 | { |
---|
| 549 | $is_first = false; |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | if ($value === '') |
---|
| 553 | { |
---|
| 554 | $query .= 'NULL'; |
---|
| 555 | } |
---|
| 556 | else |
---|
| 557 | { |
---|
| 558 | $query .= "'".$value."'"; |
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| 559 | } |
---|
| 560 | } |
---|
| 561 | $query .= ')'; |
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| 562 | |
---|
| 563 | pwg_query($query); |
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| 564 | } |
---|
| 565 | } |
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| 566 | |
---|
| 567 | /** |
---|
| 568 | * Do maintenance on all PWG tables |
---|
| 569 | * |
---|
| 570 | * @return none |
---|
| 571 | */ |
---|
| 572 | function do_maintenance_all_tables() |
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| 573 | { |
---|
| 574 | global $prefixeTable, $page; |
---|
| 575 | |
---|
| 576 | $all_tables = array(); |
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| 577 | |
---|
| 578 | // List all tables |
---|
| 579 | $query = 'SHOW TABLES LIKE \''.$prefixeTable.'%\''; |
---|
| 580 | $result = pwg_query($query); |
---|
| 581 | while ($row = pwg_db_fetch_row($result)) |
---|
| 582 | { |
---|
| 583 | array_push($all_tables, $row[0]); |
---|
| 584 | } |
---|
| 585 | |
---|
| 586 | // Repair all tables |
---|
| 587 | $query = 'REPAIR TABLE '.implode(', ', $all_tables); |
---|
| 588 | $mysqli_rc = pwg_query($query); |
---|
| 589 | |
---|
| 590 | // Re-Order all tables |
---|
| 591 | foreach ($all_tables as $table_name) |
---|
| 592 | { |
---|
| 593 | $all_primary_key = array(); |
---|
| 594 | |
---|
| 595 | $query = 'DESC '.$table_name.';'; |
---|
| 596 | $result = pwg_query($query); |
---|
| 597 | while ($row = pwg_db_fetch_assoc($result)) |
---|
| 598 | { |
---|
| 599 | if ($row['Key'] == 'PRI') |
---|
| 600 | { |
---|
| 601 | array_push($all_primary_key, $row['Field']); |
---|
| 602 | } |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | if (count($all_primary_key) != 0) |
---|
| 606 | { |
---|
| 607 | $query = 'ALTER TABLE '.$table_name.' ORDER BY '.implode(', ', $all_primary_key).';'; |
---|
| 608 | $mysqli_rc = $mysqli_rc && pwg_query($query); |
---|
| 609 | } |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | // Optimize all tables |
---|
| 613 | $query = 'OPTIMIZE TABLE '.implode(', ', $all_tables); |
---|
| 614 | $mysqli_rc = $mysqli_rc && pwg_query($query); |
---|
| 615 | if ($mysqli_rc) |
---|
| 616 | { |
---|
| 617 | array_push( |
---|
| 618 | $page['infos'], |
---|
| 619 | l10n('All optimizations have been successfully completed.') |
---|
| 620 | ); |
---|
| 621 | } |
---|
| 622 | else |
---|
| 623 | { |
---|
| 624 | array_push( |
---|
| 625 | $page['errors'], |
---|
| 626 | l10n('Optimizations have been completed with some errors.') |
---|
| 627 | ); |
---|
| 628 | } |
---|
| 629 | } |
---|
| 630 | |
---|
| 631 | function pwg_db_concat($array) |
---|
| 632 | { |
---|
| 633 | $string = implode($array, ','); |
---|
| 634 | return 'CONCAT('. $string.')'; |
---|
| 635 | } |
---|
| 636 | |
---|
| 637 | function pwg_db_concat_ws($array, $separator) |
---|
| 638 | { |
---|
| 639 | $string = implode($array, ','); |
---|
| 640 | return 'CONCAT_WS(\''.$separator.'\','. $string.')'; |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | function pwg_db_cast_to_text($string) |
---|
| 644 | { |
---|
| 645 | return $string; |
---|
| 646 | } |
---|
| 647 | |
---|
| 648 | /** |
---|
| 649 | * returns an array containing the possible values of an enum field |
---|
| 650 | * |
---|
| 651 | * @param string tablename |
---|
| 652 | * @param string fieldname |
---|
| 653 | */ |
---|
| 654 | function get_enums($table, $field) |
---|
| 655 | { |
---|
| 656 | // retrieving the properties of the table. Each line represents a field : |
---|
| 657 | // columns are 'Field', 'Type' |
---|
| 658 | $result = pwg_query('desc '.$table); |
---|
| 659 | while ($row = pwg_db_fetch_assoc($result)) |
---|
| 660 | { |
---|
| 661 | // we are only interested in the the field given in parameter for the |
---|
| 662 | // function |
---|
| 663 | if ($row['Field'] == $field) |
---|
| 664 | { |
---|
| 665 | // retrieving possible values of the enum field |
---|
| 666 | // enum('blue','green','black') |
---|
| 667 | $options = explode(',', substr($row['Type'], 5, -1)); |
---|
| 668 | foreach ($options as $i => $option) |
---|
| 669 | { |
---|
| 670 | $options[$i] = str_replace("'", '',$option); |
---|
| 671 | } |
---|
| 672 | } |
---|
| 673 | } |
---|
| 674 | pwg_db_free_result($result); |
---|
| 675 | return $options; |
---|
| 676 | } |
---|
| 677 | |
---|
| 678 | /** |
---|
| 679 | * Smartly checks if a variable is equivalent to true or false |
---|
| 680 | * |
---|
| 681 | * @param mixed input |
---|
| 682 | * @return bool |
---|
| 683 | */ |
---|
| 684 | function get_boolean($input) |
---|
| 685 | { |
---|
| 686 | if ('false' === strtolower($input)) |
---|
| 687 | { |
---|
| 688 | return false; |
---|
| 689 | } |
---|
| 690 | |
---|
| 691 | return (bool)$input; |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | /** |
---|
| 695 | * returns boolean string 'true' or 'false' if the given var is boolean |
---|
| 696 | * |
---|
| 697 | * @param mixed $var |
---|
| 698 | * @return mixed |
---|
| 699 | */ |
---|
| 700 | function boolean_to_string($var) |
---|
| 701 | { |
---|
| 702 | if (is_bool($var)) |
---|
| 703 | { |
---|
| 704 | return $var ? 'true' : 'false'; |
---|
| 705 | } |
---|
| 706 | else |
---|
| 707 | { |
---|
| 708 | return $var; |
---|
| 709 | } |
---|
| 710 | } |
---|
| 711 | |
---|
| 712 | /** |
---|
| 713 | * |
---|
| 714 | * interval and date functions |
---|
| 715 | * |
---|
| 716 | */ |
---|
| 717 | |
---|
| 718 | function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE') |
---|
| 719 | { |
---|
| 720 | if ($date!='CURRENT_DATE') |
---|
| 721 | { |
---|
| 722 | $date = '\''.$date.'\''; |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | return 'SUBDATE('.$date.',INTERVAL '.$period.' DAY)'; |
---|
| 726 | } |
---|
| 727 | |
---|
| 728 | function pwg_db_get_recent_period($period, $date='CURRENT_DATE') |
---|
| 729 | { |
---|
| 730 | $query = ' |
---|
| 731 | SELECT '.pwg_db_get_recent_period_expression($period); |
---|
| 732 | list($d) = pwg_db_fetch_row(pwg_query($query)); |
---|
| 733 | |
---|
| 734 | return $d; |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | function pwg_db_get_flood_period_expression($seconds) |
---|
| 738 | { |
---|
| 739 | return 'SUBDATE(now(), INTERVAL '.$seconds.' SECOND)'; |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | function pwg_db_get_hour($date) |
---|
| 743 | { |
---|
| 744 | return 'hour('.$date.')'; |
---|
| 745 | } |
---|
| 746 | |
---|
| 747 | function pwg_db_get_date_YYYYMM($date) |
---|
| 748 | { |
---|
| 749 | return 'DATE_FORMAT('.$date.', \'%Y%m\')'; |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | function pwg_db_get_date_MMDD($date) |
---|
| 753 | { |
---|
| 754 | return 'DATE_FORMAT('.$date.', \'%m%d\')'; |
---|
| 755 | } |
---|
| 756 | |
---|
| 757 | function pwg_db_get_year($date) |
---|
| 758 | { |
---|
| 759 | return 'YEAR('.$date.')'; |
---|
| 760 | } |
---|
| 761 | |
---|
| 762 | function pwg_db_get_month($date) |
---|
| 763 | { |
---|
| 764 | return 'MONTH('.$date.')'; |
---|
| 765 | } |
---|
| 766 | |
---|
| 767 | function pwg_db_get_week($date, $mode=null) |
---|
| 768 | { |
---|
| 769 | if ($mode) |
---|
| 770 | { |
---|
| 771 | return 'WEEK('.$date.', '.$mode.')'; |
---|
| 772 | } |
---|
| 773 | else |
---|
| 774 | { |
---|
| 775 | return 'WEEK('.$date.')'; |
---|
| 776 | } |
---|
| 777 | } |
---|
| 778 | |
---|
| 779 | function pwg_db_get_dayofmonth($date) |
---|
| 780 | { |
---|
| 781 | return 'DAYOFMONTH('.$date.')'; |
---|
| 782 | } |
---|
| 783 | |
---|
| 784 | function pwg_db_get_dayofweek($date) |
---|
| 785 | { |
---|
| 786 | return 'DAYOFWEEK('.$date.')'; |
---|
| 787 | } |
---|
| 788 | |
---|
| 789 | function pwg_db_get_weekday($date) |
---|
| 790 | { |
---|
| 791 | return 'WEEKDAY('.$date.')'; |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | function pwg_db_date_to_ts($date) |
---|
| 795 | { |
---|
| 796 | return 'UNIX_TIMESTAMP('.$date.')'; |
---|
| 797 | } |
---|
| 798 | |
---|
| 799 | // my_error returns (or send to standard output) the message concerning the |
---|
| 800 | // error occured for the last mysql query. |
---|
| 801 | function my_error($header, $die) |
---|
| 802 | { |
---|
| 803 | global $mysqli; |
---|
| 804 | |
---|
| 805 | $error = "[mysql error ".$mysqli->errno.'] '.$mysqli->error."\n"; |
---|
| 806 | $error .= $header; |
---|
| 807 | |
---|
| 808 | if ($die) |
---|
| 809 | { |
---|
| 810 | fatal_error($error); |
---|
| 811 | } |
---|
| 812 | echo("<pre>"); |
---|
| 813 | trigger_error($error, E_USER_WARNING); |
---|
| 814 | echo("</pre>"); |
---|
| 815 | } |
---|
| 816 | |
---|
| 817 | ?> |
---|