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

   1 <?php
   2
   3
   4 /*
   5 V4.92a 29 Aug 2006  (c) 2000-2006 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 ?>