[34] | 1 | <?php |
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| 2 | |
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| 3 | |
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| 4 | /* |
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| 5 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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| 6 | Released under both BSD license and Lesser GPL library license. |
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| 7 | Whenever there is any discrepancy between the two licenses, |
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| 8 | the BSD license will take precedence. |
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| 9 | Set tabs to 8. |
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| 10 | |
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| 11 | */ |
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| 12 | |
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| 13 | class ADODB_pdo_mysql extends ADODB_pdo { |
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| 14 | var $metaTablesSQL = "SHOW TABLES"; |
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| 15 | var $metaColumnsSQL = "SHOW COLUMNS FROM `%s`"; |
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| 16 | var $sysDate = 'CURDATE()'; |
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| 17 | var $sysTimeStamp = 'NOW()'; |
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| 18 | var $nameQuote = '`'; |
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| 19 | |
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| 20 | function _init($parentDriver) |
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| 21 | { |
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| 22 | |
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| 23 | $parentDriver->hasTransactions = false; |
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| 24 | $parentDriver->_bindInputArray = false; |
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| 25 | $parentDriver->hasInsertID = true; |
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| 26 | $parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true); |
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| 27 | } |
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| 28 | |
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| 29 | // dayFraction is a day in floating point |
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| 30 | function OffsetDate($dayFraction,$date=false) |
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| 31 | { |
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| 32 | if (!$date) $date = $this->sysDate; |
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| 33 | |
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| 34 | $fraction = $dayFraction * 24 * 3600; |
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| 35 | return $date . ' + INTERVAL ' . $fraction.' SECOND'; |
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| 36 | |
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| 37 | // return "from_unixtime(unix_timestamp($date)+$fraction)"; |
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| 38 | } |
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| 39 | |
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| 40 | function ServerInfo() |
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| 41 | { |
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| 42 | $arr['description'] = ADOConnection::GetOne("select version()"); |
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| 43 | $arr['version'] = ADOConnection::_findvers($arr['description']); |
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| 44 | return $arr; |
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| 45 | } |
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| 46 | |
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| 47 | function &MetaTables($ttype=false,$showSchema=false,$mask=false) |
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| 48 | { |
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| 49 | $save = $this->metaTablesSQL; |
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| 50 | if ($showSchema && is_string($showSchema)) { |
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| 51 | $this->metaTablesSQL .= " from $showSchema"; |
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| 52 | } |
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| 53 | |
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| 54 | if ($mask) { |
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| 55 | $mask = $this->qstr($mask); |
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| 56 | $this->metaTablesSQL .= " like $mask"; |
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| 57 | } |
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| 58 | $ret =& ADOConnection::MetaTables($ttype,$showSchema); |
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| 59 | |
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| 60 | $this->metaTablesSQL = $save; |
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| 61 | return $ret; |
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| 62 | } |
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| 63 | |
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| 64 | function SetTransactionMode( $transaction_mode ) |
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| 65 | { |
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| 66 | $this->_transmode = $transaction_mode; |
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| 67 | if (empty($transaction_mode)) { |
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| 68 | $this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ'); |
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| 69 | return; |
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| 70 | } |
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| 71 | if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode; |
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| 72 | $this->Execute("SET SESSION TRANSACTION ".$transaction_mode); |
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| 73 | } |
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| 74 | |
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| 75 | function &MetaColumns($table) |
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| 76 | { |
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| 77 | $this->_findschema($table,$schema); |
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| 78 | if ($schema) { |
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| 79 | $dbName = $this->database; |
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| 80 | $this->SelectDB($schema); |
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| 81 | } |
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| 82 | global $ADODB_FETCH_MODE; |
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| 83 | $save = $ADODB_FETCH_MODE; |
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| 84 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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| 85 | |
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| 86 | if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false); |
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| 87 | $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table)); |
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| 88 | |
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| 89 | if ($schema) { |
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| 90 | $this->SelectDB($dbName); |
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| 91 | } |
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| 92 | |
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| 93 | if (isset($savem)) $this->SetFetchMode($savem); |
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| 94 | $ADODB_FETCH_MODE = $save; |
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| 95 | if (!is_object($rs)) { |
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| 96 | $false = false; |
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| 97 | return $false; |
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| 98 | } |
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| 99 | |
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| 100 | $retarr = array(); |
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| 101 | while (!$rs->EOF){ |
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| 102 | $fld = new ADOFieldObject(); |
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| 103 | $fld->name = $rs->fields[0]; |
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| 104 | $type = $rs->fields[1]; |
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| 105 | |
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| 106 | // split type into type(length): |
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| 107 | $fld->scale = null; |
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| 108 | if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) { |
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| 109 | $fld->type = $query_array[1]; |
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| 110 | $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1; |
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| 111 | $fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1; |
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| 112 | } elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) { |
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| 113 | $fld->type = $query_array[1]; |
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| 114 | $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1; |
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| 115 | } elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) { |
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| 116 | $fld->type = $query_array[1]; |
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| 117 | $arr = explode(",",$query_array[2]); |
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| 118 | $fld->enums = $arr; |
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| 119 | $zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6 |
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| 120 | $fld->max_length = ($zlen > 0) ? $zlen : 1; |
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| 121 | } else { |
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| 122 | $fld->type = $type; |
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| 123 | $fld->max_length = -1; |
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| 124 | } |
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| 125 | $fld->not_null = ($rs->fields[2] != 'YES'); |
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| 126 | $fld->primary_key = ($rs->fields[3] == 'PRI'); |
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| 127 | $fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false); |
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| 128 | $fld->binary = (strpos($type,'blob') !== false); |
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| 129 | $fld->unsigned = (strpos($type,'unsigned') !== false); |
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| 130 | |
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| 131 | if (!$fld->binary) { |
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| 132 | $d = $rs->fields[4]; |
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| 133 | if ($d != '' && $d != 'NULL') { |
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| 134 | $fld->has_default = true; |
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| 135 | $fld->default_value = $d; |
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| 136 | } else { |
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| 137 | $fld->has_default = false; |
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| 138 | } |
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| 139 | } |
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| 140 | |
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| 141 | if ($save == ADODB_FETCH_NUM) { |
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| 142 | $retarr[] = $fld; |
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| 143 | } else { |
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| 144 | $retarr[strtoupper($fld->name)] = $fld; |
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| 145 | } |
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| 146 | $rs->MoveNext(); |
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| 147 | } |
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| 148 | |
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| 149 | $rs->Close(); |
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| 150 | return $retarr; |
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| 151 | } |
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| 152 | |
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| 153 | |
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| 154 | // parameters use PostgreSQL convention, not MySQL |
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| 155 | function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0) |
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| 156 | { |
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| 157 | $offsetStr =($offset>=0) ? "$offset," : ''; |
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| 158 | // jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220 |
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| 159 | if ($nrows < 0) $nrows = '18446744073709551615'; |
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| 160 | |
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| 161 | if ($secs) |
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| 162 | $rs =& $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr); |
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| 163 | else |
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| 164 | $rs =& $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr); |
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| 165 | return $rs; |
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| 166 | } |
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| 167 | } |
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| 168 | ?> |
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