[Sommaire] [Imprimer]

   1  <?php
   2  
   3  
   4  /*
   5  V4.94 23 Jan 2007  (c) 2000-2007 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 $nameQuote = '`';
  19  
  20  	function _init($parentDriver)
  21      {
  22      
  23          $parentDriver->hasTransactions = false;
  24          $parentDriver->_bindInputArray = false;
  25          $parentDriver->hasInsertID = true;
  26          $parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);
  27      }
  28      
  29          // dayFraction is a day in floating point
  30  	function OffsetDate($dayFraction,$date=false)
  31      {        
  32          if (!$date) $date = $this->sysDate;
  33          
  34          $fraction = $dayFraction * 24 * 3600;
  35          return $date . ' + INTERVAL ' .     $fraction.' SECOND';
  36          
  37  //        return "from_unixtime(unix_timestamp($date)+$fraction)";
  38      }
  39      
  40  	function ServerInfo()
  41      {
  42          $arr['description'] = ADOConnection::GetOne("select version()");
  43          $arr['version'] = ADOConnection::_findvers($arr['description']);
  44          return $arr;
  45      }
  46      
  47      function &MetaTables($ttype=false,$showSchema=false,$mask=false) 
  48      {    
  49          $save = $this->metaTablesSQL;
  50          if ($showSchema && is_string($showSchema)) {
  51              $this->metaTablesSQL .= " from $showSchema";
  52          }
  53          
  54          if ($mask) {
  55              $mask = $this->qstr($mask);
  56              $this->metaTablesSQL .= " like $mask";
  57          }
  58          $ret =& ADOConnection::MetaTables($ttype,$showSchema);
  59          
  60          $this->metaTablesSQL = $save;
  61          return $ret;
  62      }
  63      
  64  	function SetTransactionMode( $transaction_mode ) 
  65      {
  66          $this->_transmode  = $transaction_mode;
  67          if (empty($transaction_mode)) {
  68              $this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ');
  69              return;
  70          }
  71          if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
  72          $this->Execute("SET SESSION TRANSACTION ".$transaction_mode);
  73      }
  74      
  75       function &MetaColumns($table) 
  76      {
  77          $this->_findschema($table,$schema);
  78          if ($schema) {
  79              $dbName = $this->database;
  80              $this->SelectDB($schema);
  81          }
  82          global $ADODB_FETCH_MODE;
  83          $save = $ADODB_FETCH_MODE;
  84          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
  85          
  86          if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  87          $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
  88          
  89          if ($schema) {
  90              $this->SelectDB($dbName);
  91          }
  92          
  93          if (isset($savem)) $this->SetFetchMode($savem);
  94          $ADODB_FETCH_MODE = $save;
  95          if (!is_object($rs)) {
  96              $false = false;
  97              return $false;
  98          }
  99              
 100          $retarr = array();
 101          while (!$rs->EOF){
 102              $fld = new ADOFieldObject();
 103              $fld->name = $rs->fields[0];
 104              $type = $rs->fields[1];
 105              
 106              // split type into type(length):
 107              $fld->scale = null;
 108              if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
 109                  $fld->type = $query_array[1];
 110                  $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 111                  $fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
 112              } elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
 113                  $fld->type = $query_array[1];
 114                  $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
 115              } elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
 116                  $fld->type = $query_array[1];
 117                  $arr = explode(",",$query_array[2]);
 118                  $fld->enums = $arr;
 119                  $zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
 120                  $fld->max_length = ($zlen > 0) ? $zlen : 1;
 121              } else {
 122                  $fld->type = $type;
 123                  $fld->max_length = -1;
 124              }
 125              $fld->not_null = ($rs->fields[2] != 'YES');
 126              $fld->primary_key = ($rs->fields[3] == 'PRI');
 127              $fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
 128              $fld->binary = (strpos($type,'blob') !== false);
 129              $fld->unsigned = (strpos($type,'unsigned') !== false);
 130                  
 131              if (!$fld->binary) {
 132                  $d = $rs->fields[4];
 133                  if ($d != '' && $d != 'NULL') {
 134                      $fld->has_default = true;
 135                      $fld->default_value = $d;
 136                  } else {
 137                      $fld->has_default = false;
 138                  }
 139              }
 140              
 141              if ($save == ADODB_FETCH_NUM) {
 142                  $retarr[] = $fld;
 143              } else {
 144                  $retarr[strtoupper($fld->name)] = $fld;
 145              }
 146                  $rs->MoveNext();
 147              }
 148          
 149              $rs->Close();
 150              return $retarr;    
 151      }
 152          
 153      
 154      // parameters use PostgreSQL convention, not MySQL
 155      function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0)
 156      {
 157          $offsetStr =($offset>=0) ? "$offset," : '';
 158          // jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220
 159          if ($nrows < 0) $nrows = '18446744073709551615'; 
 160          
 161          if ($secs)
 162              $rs =& $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr);
 163          else
 164              $rs =& $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr);
 165          return $rs;
 166      }
 167  }
 168  ?>