lib/adodb/drivers/adodb-pdo_mysql.inc.php

   1 <?php
   2
   3
   4 /*
   5 V4.98 13 Feb 2008  (c) 2000-2008 John Lim (jlim#natsoft.com.my). All rights reserved.
   6   Released under both BSD license and Lesser GPL library license.
   7   Whenever there is any discrepancy between the two licenses,
   8   the BSD license will take precedence.
   9   Set tabs to 8.
  10
  11 */
  12
  13 class ADODB_pdo_mysql extends ADODB_pdo {
  14         var $metaTablesSQL = "SHOW TABLES";
  15         var $metaColumnsSQL = "SHOW COLUMNS FROM `%s`";
  16         var $sysDate = 'CURDATE()';
  17         var $sysTimeStamp = 'NOW()';
  18         var $hasGenID = true;
  19         var $_genIDSQL = "update %s set id=LAST_INSERT_ID(id+1);";
  20         var $_dropSeqSQL = "drop table %s";
  21
  22         var $nameQuote = '`';
  23
  24         function _init($parentDriver)
  25         {
  26
  27                 $parentDriver->hasTransactions = false;
  28                 $parentDriver->_bindInputArray = false;
  29                 $parentDriver->hasInsertID = true;
  30                 $parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);
  31         }
  32
  33                 // dayFraction is a day in floating point
  34         function OffsetDate($dayFraction,$date=false)
  35         {
  36                 if (!$date) $date = $this->sysDate;
  37
  38                 $fraction = $dayFraction * 24 * 3600;
  39                 return $date . ' + INTERVAL ' .  $fraction.' SECOND';
  40
  41 //              return "from_unixtime(unix_timestamp($date)+$fraction)";
  42         }
  43
  44         function ServerInfo()
  45         {
  46                 $arr['description'] = ADOConnection::GetOne("select version()");
  47                 $arr['version'] = ADOConnection::_findvers($arr['description']);
  48                 return $arr;
  49         }
  50
  51         function &MetaTables($ttype=false,$showSchema=false,$mask=false)
  52         {
  53                 $save = $this->metaTablesSQL;
  54                 if ($showSchema && is_string($showSchema)) {
  55                         $this->metaTablesSQL .= " from $showSchema";
  56                 }
  57
  58                 if ($mask) {
  59                         $mask = $this->qstr($mask);
  60                         $this->metaTablesSQL .= " like $mask";
  61                 }
  62                 $ret =& ADOConnection::MetaTables($ttype,$showSchema);
  63
  64                 $this->metaTablesSQL = $save;
  65                 return $ret;
  66         }
  67
  68         function SetTransactionMode( $transaction_mode )
  69         {
  70                 $this->_transmode  = $transaction_mode;
  71                 if (empty($transaction_mode)) {
  72                         $this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ');
  73                         return;
  74                 }
  75                 if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
  76                 $this->Execute("SET SESSION TRANSACTION ".$transaction_mode);
  77         }
  78
  79         function &MetaColumns($table)
  80         {
  81                 $this->_findschema($table,$schema);
  82                 if ($schema) {
  83                         $dbName = $this->database;
  84                         $this->SelectDB($schema);
  85                 }
  86                 global $ADODB_FETCH_MODE;
  87                 $save = $ADODB_FETCH_MODE;
  88                 $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  89
  90                 if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  91                 $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
  92
  93                 if ($schema) {
  94                         $this->SelectDB($dbName);
  95                 }
  96
  97                 if (isset($savem)) $this->SetFetchMode($savem);
  98                 $ADODB_FETCH_MODE = $save;
  99                 if (!is_object($rs)) {
 100                         $false = false;
 101                         return $false;
 102                 }
 103
 104                 $retarr = array();
 105                 while (!$rs->EOF){
 106                         $fld = new ADOFieldObject();
 107                         $fld->name = $rs->fields[0];
 108                         $type = $rs->fields[1];
 109
 110                         // split type into type(length):
 111                         $fld->scale = null;
 112                         if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
 113                                 $fld->type = $query_array[1];
 114                                 $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 115                                 $fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
 116                         } elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
 117                                 $fld->type = $query_array[1];
 118                                 $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 119                         } elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
 120                                 $fld->type = $query_array[1];
 121                                 $arr = explode(",",$query_array[2]);
 122                                 $fld->enums = $arr;
 123                                 $zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
 124                                 $fld->max_length = ($zlen > 0) ? $zlen : 1;
 125                         } else {
 126                                 $fld->type = $type;
 127                                 $fld->max_length = -1;
 128                         }
 129                         $fld->not_null = ($rs->fields[2] != 'YES');
 130                         $fld->primary_key = ($rs->fields[3] == 'PRI');
 131                         $fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
 132                         $fld->binary = (strpos($type,'blob') !== false);
 133                         $fld->unsigned = (strpos($type,'unsigned') !== false);
 134
 135                         if (!$fld->binary) {
 136                                 $d = $rs->fields[4];
 137                                 if ($d != '' && $d != 'NULL') {
 138                                         $fld->has_default = true;
 139                                         $fld->default_value = $d;
 140                                 } else {
 141                                         $fld->has_default = false;
 142                                 }
 143                         }
 144
 145                         if ($save == ADODB_FETCH_NUM) {
 146                                 $retarr[] = $fld;
 147                         } else {
 148                                 $retarr[strtoupper($fld->name)] = $fld;
 149                         }
 150                                 $rs->MoveNext();
 151                         }
 152
 153                         $rs->Close();
 154                         return $retarr;
 155         }
 156
 157
 158         // parameters use PostgreSQL convention, not MySQL
 159         function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0)
 160         {
 161                 $offsetStr =($offset>=0) ? "$offset," : '';
 162                 // jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220
 163                 if ($nrows < 0) $nrows = '18446744073709551615';
 164
 165                 if ($secs)
 166                         $rs =& $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr);
 167                 else
 168                         $rs =& $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr);
 169                 return $rs;
 170         }
 171 }
 172 ?>