| 1 |
<?php |
| 2 |
// |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2002 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
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// | available at through the world-wide-web at | |
| 11 |
// | http://www.php.net/license/2_02.txt. | |
| 12 |
// | If you did not receive a copy of the PHP license and are unable to | |
| 13 |
// | obtain it through the world-wide-web, please send a note to | |
| 14 |
// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
| 16 |
// | Author: Stig Bakken <ssb@fast.no> | |
| 17 |
// +----------------------------------------------------------------------+ |
| 18 |
// |
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// $Id: mysql.php,v 1.89.2.1 2002/04/09 19:04:14 ssb Exp $ |
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// |
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// Database independent query interface definition for PHP's MySQL |
| 22 |
// extension. |
| 23 |
// |
| 24 |
|
| 25 |
// |
| 26 |
// XXX legend: |
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// |
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// XXX ERRORMSG: The error message from the mysql function should |
| 29 |
// be registered here. |
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// |
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|
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require_once "DB/common.php"; |
| 33 |
|
| 34 |
class DB_mysql extends DB_common |
| 35 |
{ |
| 36 |
// {{{ properties |
| 37 |
|
| 38 |
var $connection; |
| 39 |
var $phptype, $dbsyntax; |
| 40 |
var $prepare_tokens = array(); |
| 41 |
var $prepare_types = array(); |
| 42 |
var $num_rows = array(); |
| 43 |
var $transaction_opcount = 0; |
| 44 |
var $autocommit = true; |
| 45 |
var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */ |
| 46 |
var $_db = false; |
| 47 |
|
| 48 |
// }}} |
| 49 |
// {{{ constructor |
| 50 |
|
| 51 |
/** |
| 52 |
* DB_mysql constructor. |
| 53 |
* |
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* @access public |
| 55 |
*/ |
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|
| 57 |
function DB_mysql() |
| 58 |
{ |
| 59 |
$this->DB_common(); |
| 60 |
$this->phptype = 'mysql'; |
| 61 |
$this->dbsyntax = 'mysql'; |
| 62 |
$this->features = array( |
| 63 |
'prepare' => false, |
| 64 |
'pconnect' => true, |
| 65 |
'transactions' => true, |
| 66 |
'limit' => 'alter' |
| 67 |
); |
| 68 |
$this->errorcode_map = array( |
| 69 |
1004 => DB_ERROR_CANNOT_CREATE, |
| 70 |
1005 => DB_ERROR_CANNOT_CREATE, |
| 71 |
1006 => DB_ERROR_CANNOT_CREATE, |
| 72 |
1007 => DB_ERROR_ALREADY_EXISTS, |
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1008 => DB_ERROR_CANNOT_DROP, |
| 74 |
1046 => DB_ERROR_NODBSELECTED, |
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1050 => DB_ERROR_ALREADY_EXISTS, |
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1051 => DB_ERROR_NOSUCHTABLE, |
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1054 => DB_ERROR_NOSUCHFIELD, |
| 78 |
1062 => DB_ERROR_ALREADY_EXISTS, |
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1064 => DB_ERROR_SYNTAX, |
| 80 |
1100 => DB_ERROR_NOT_LOCKED, |
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1136 => DB_ERROR_VALUE_COUNT_ON_ROW, |
| 82 |
1146 => DB_ERROR_NOSUCHTABLE, |
| 83 |
1048 => DB_ERROR_CONSTRAINT, |
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); |
| 85 |
} |
| 86 |
|
| 87 |
// }}} |
| 88 |
|
| 89 |
// {{{ connect() |
| 90 |
|
| 91 |
/** |
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* Connect to a database and log in as the specified user. |
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* |
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* @param $dsn the data source name (see DB::parseDSN for syntax) |
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* @param $persistent (optional) whether the connection should |
| 96 |
* be persistent |
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* @access public |
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* @return int DB_OK on success, a DB error on failure |
| 99 |
*/ |
| 100 |
|
| 101 |
function connect($dsninfo, $persistent = false) |
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{ |
| 103 |
if (!DB::assertExtension('mysql')) |
| 104 |
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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|
| 106 |
$this->dsn = $dsninfo; |
| 107 |
if (isset($dsninfo['protocol']) && $dsninfo['protocol'] == 'unix') { |
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$dbhost = ':' . $dsninfo['socket']; |
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} else { |
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$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
| 111 |
if (!empty($dsninfo['port'])) { |
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$dbhost .= ':' . $dsninfo['port']; |
| 113 |
} |
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} |
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$user = $dsninfo['username']; |
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$pw = $dsninfo['password']; |
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|
| 118 |
$connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect'; |
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|
| 120 |
@ini_set('track_errors', true); |
| 121 |
if ($dbhost && $user && $pw) { |
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$conn = @$connect_function($dbhost, $user, $pw); |
| 123 |
} elseif ($dbhost && $user) { |
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$conn = @$connect_function($dbhost, $user); |
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} elseif ($dbhost) { |
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$conn = @$connect_function($dbhost); |
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} else { |
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$conn = false; |
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} |
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@ini_restore('track_errors'); |
| 131 |
if (empty($conn)) { |
| 132 |
if (($err = @mysql_error()) != '') { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
| 134 |
null, $err); |
| 135 |
} elseif (empty($php_errormsg)) { |
| 136 |
return $this->raiseError(DB_ERROR_CONNECT_FAILED); |
| 137 |
} else { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
| 139 |
null, $php_errormsg); |
| 140 |
} |
| 141 |
} |
| 142 |
|
| 143 |
if ($dsninfo['database']) { |
| 144 |
if (!@mysql_select_db($dsninfo['database'], $conn)) { |
| 145 |
switch(mysql_errno($conn)) { |
| 146 |
case 1049: |
| 147 |
return $this->raiseError(DB_ERROR_NOSUCHDB, null, null, |
| 148 |
null, mysql_error($conn)); |
| 149 |
break; |
| 150 |
case 1044: |
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return $this->raiseError(DB_ERROR_ACCESS_VIOLATION, null, null, |
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null, mysql_error($conn)); |
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break; |
| 154 |
default: |
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return $this->raiseError(DB_ERROR, null, null, |
| 156 |
null, mysql_error($conn)); |
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break; |
| 158 |
|
| 159 |
} |
| 160 |
} |
| 161 |
// fix to allow calls to different databases in the same script |
| 162 |
$this->_db = $dsninfo['database']; |
| 163 |
} |
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|
| 165 |
$this->connection = $conn; |
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return DB_OK; |
| 167 |
} |
| 168 |
|
| 169 |
// }}} |
| 170 |
// {{{ disconnect() |
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|
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/** |
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* Log out and disconnect from the database. |
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* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if not connected. |
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*/ |
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function disconnect() |
| 180 |
{ |
| 181 |
$ret = mysql_close($this->connection); |
| 182 |
$this->connection = null; |
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return $ret; |
| 184 |
} |
| 185 |
|
| 186 |
// }}} |
| 187 |
// {{{ simpleQuery() |
| 188 |
|
| 189 |
/** |
| 190 |
* Send a query to MySQL and return the results as a MySQL resource |
| 191 |
* identifier. |
| 192 |
* |
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* @param the SQL query |
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* |
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* @access public |
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* |
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* @return mixed returns a valid MySQL result for successful SELECT |
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* queries, DB_OK for other successful queries. A DB error is |
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* returned on failure. |
| 200 |
*/ |
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function simpleQuery($query) |
| 202 |
{ |
| 203 |
$ismanip = DB::isManip($query); |
| 204 |
$this->last_query = $query; |
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$query = $this->modifyQuery($query); |
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if (!@mysql_select_db($this->_db, $this->connection)) { |
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return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
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} |
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if (!$this->autocommit && $ismanip) { |
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if ($this->transaction_opcount == 0) { |
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$result = @mysql_query('SET AUTOCOMMIT=0', $this->connection); |
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$result = @mysql_query('BEGIN', $this->connection); |
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if (!$result) { |
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return $this->mysqlRaiseError(); |
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} |
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} |
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$this->transaction_opcount++; |
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} |
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$result = @mysql_query($query, $this->connection); |
| 220 |
if (!$result) { |
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return $this->mysqlRaiseError(); |
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} |
| 223 |
if (is_resource($result)) { |
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$numrows = $this->numrows($result); |
| 225 |
if (is_object($numrows)) { |
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return $numrows; |
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} |
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$this->num_rows[$result] = $numrows; |
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return $result; |
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} |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ nextResult() |
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|
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/** |
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* Move the internal mysql result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
| 247 |
{ |
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return false; |
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} |
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|
| 251 |
// }}} |
| 252 |
// {{{ fetchRow() |
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|
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/** |
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* Fetch and return a row of data (it uses fetchInto for that) |
| 256 |
* @param $result MySQL result identifier |
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* @param $fetchmode format of fetched row array |
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* @param $rownum the absolute row number to fetch |
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* |
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* @return array a row of data, or false on error |
| 261 |
*/ |
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function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null) |
| 263 |
{ |
| 264 |
if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
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$fetchmode = $this->fetchmode; |
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} |
| 267 |
$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum); |
| 268 |
if ($res !== DB_OK) { |
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return $res; |
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} |
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return $arr; |
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} |
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|
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// }}} |
| 275 |
// {{{ fetchInto() |
| 276 |
|
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/** |
| 278 |
* Fetch a row and insert the data into an existing array. |
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* |
| 280 |
* @param $result MySQL result identifier |
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* @param $arr (reference) array where data from the row is stored |
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* @param $fetchmode how the array data should be indexed |
| 283 |
* @param $rownum the row number to fetch |
| 284 |
* @access public |
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* |
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* @return int DB_OK on success, a DB error on failure |
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*/ |
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function fetchInto($result, &$arr, $fetchmode, $rownum=null) |
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{ |
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if ($rownum !== null) { |
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if (!@mysql_data_seek($result, $rownum)) { |
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return null; |
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} |
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} |
| 295 |
if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$arr = @mysql_fetch_array($result, MYSQL_ASSOC); |
| 297 |
} else { |
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$arr = @mysql_fetch_row($result); |
| 299 |
} |
| 300 |
if (!$arr) { |
| 301 |
$errno = @mysql_errno($this->connection); |
| 302 |
if (!$errno) { |
| 303 |
return NULL; |
| 304 |
} |
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return $this->mysqlRaiseError($errno); |
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} |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ freeResult() |
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|
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/** |
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* Free the internal resources associated with $result. |
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* |
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* @param $result MySQL result identifier or DB statement identifier |
| 317 |
* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if $result is invalid |
| 321 |
*/ |
| 322 |
function freeResult($result) |
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{ |
| 324 |
if (is_resource($result)) { |
| 325 |
return mysql_free_result($result); |
| 326 |
} |
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|
| 328 |
$result = (int)$result; // $result is a prepared query handle |
| 329 |
if (!isset($this->prepare_tokens[$result])) { |
| 330 |
return false; |
| 331 |
} |
| 332 |
|
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// [ssb]: WTF? unset($this->prepare_types[$result]) makes PHP |
| 334 |
// crash on my laptop (4.1.2 as well as 4.3.0-dev) |
| 335 |
|
| 336 |
$copy = $this->prepare_types; |
| 337 |
unset($copy[$result]); |
| 338 |
$this->prepare_types = $copy; |
| 339 |
// unset($this->prepare_types[$result]); |
| 340 |
|
| 341 |
$copy = $this->prepare_tokens; |
| 342 |
unset($copy[$result]); |
| 343 |
$this->prepare_tokens = $copy; |
| 344 |
// unset($this->prepare_tokens[$result]); |
| 345 |
|
| 346 |
return true; |
| 347 |
} |
| 348 |
|
| 349 |
// }}} |
| 350 |
// {{{ numCols() |
| 351 |
|
| 352 |
/** |
| 353 |
* Get the number of columns in a result set. |
| 354 |
* |
| 355 |
* @param $result MySQL result identifier |
| 356 |
* |
| 357 |
* @access public |
| 358 |
* |
| 359 |
* @return int the number of columns per row in $result |
| 360 |
*/ |
| 361 |
function numCols($result) |
| 362 |
{ |
| 363 |
$cols = @mysql_num_fields($result); |
| 364 |
|
| 365 |
if (!$cols) { |
| 366 |
return $this->mysqlRaiseError(); |
| 367 |
} |
| 368 |
|
| 369 |
return $cols; |
| 370 |
} |
| 371 |
|
| 372 |
// }}} |
| 373 |
// {{{ numRows() |
| 374 |
|
| 375 |
/** |
| 376 |
* Get the number of rows in a result set. |
| 377 |
* |
| 378 |
* @param $result MySQL result identifier |
| 379 |
* |
| 380 |
* @access public |
| 381 |
* |
| 382 |
* @return int the number of rows in $result |
| 383 |
*/ |
| 384 |
function numRows($result) |
| 385 |
{ |
| 386 |
$rows = @mysql_num_rows($result); |
| 387 |
if ($rows === null) { |
| 388 |
return $this->mysqlRaiseError(); |
| 389 |
} |
| 390 |
return $rows; |
| 391 |
} |
| 392 |
|
| 393 |
// }}} |
| 394 |
// {{{ autoCommit() |
| 395 |
|
| 396 |
/** |
| 397 |
* Enable/disable automatic commits |
| 398 |
*/ |
| 399 |
function autoCommit($onoff = false) |
| 400 |
{ |
| 401 |
// XXX if $this->transaction_opcount > 0, we should probably |
| 402 |
// issue a warning here. |
| 403 |
$this->autocommit = $onoff ? true : false; |
| 404 |
return DB_OK; |
| 405 |
} |
| 406 |
|
| 407 |
// }}} |
| 408 |
// {{{ commit() |
| 409 |
|
| 410 |
/** |
| 411 |
* Commit the current transaction. |
| 412 |
*/ |
| 413 |
function commit() |
| 414 |
{ |
| 415 |
if ($this->transaction_opcount > 0) { |
| 416 |
if (!@mysql_select_db($this->_db, $this->connection)) { |
| 417 |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
| 418 |
} |
| 419 |
$result = @mysql_query('COMMIT', $this->connection); |
| 420 |
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
| 421 |
$this->transaction_opcount = 0; |
| 422 |
if (!$result) { |
| 423 |
return $this->mysqlRaiseError(); |
| 424 |
} |
| 425 |
} |
| 426 |
return DB_OK; |
| 427 |
} |
| 428 |
|
| 429 |
// }}} |
| 430 |
// {{{ rollback() |
| 431 |
|
| 432 |
/** |
| 433 |
* Roll back (undo) the current transaction. |
| 434 |
*/ |
| 435 |
function rollback() |
| 436 |
{ |
| 437 |
if ($this->transaction_opcount > 0) { |
| 438 |
if (!@mysql_select_db($this->_db, $this->connection)) { |
| 439 |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
| 440 |
} |
| 441 |
$result = @mysql_query('ROLLBACK', $this->connection); |
| 442 |
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
| 443 |
$this->transaction_opcount = 0; |
| 444 |
if (!$result) { |
| 445 |
return $this->mysqlRaiseError(); |
| 446 |
} |
| 447 |
} |
| 448 |
return DB_OK; |
| 449 |
} |
| 450 |
|
| 451 |
// }}} |
| 452 |
// {{{ affectedRows() |
| 453 |
|
| 454 |
/** |
| 455 |
* Gets the number of rows affected by the data manipulation |
| 456 |
* query. For other queries, this function returns 0. |
| 457 |
* |
| 458 |
* @return number of rows affected by the last query |
| 459 |
*/ |
| 460 |
|
| 461 |
function affectedRows() |
| 462 |
{ |
| 463 |
if (DB::isManip($this->last_query)) { |
| 464 |
$result = @mysql_affected_rows($this->connection); |
| 465 |
} else { |
| 466 |
$result = 0; |
| 467 |
} |
| 468 |
return $result; |
| 469 |
} |
| 470 |
|
| 471 |
// }}} |
| 472 |
// {{{ errorNative() |
| 473 |
|
| 474 |
/** |
| 475 |
* Get the native error code of the last error (if any) that |
| 476 |
* occured on the current connection. |
| 477 |
* |
| 478 |
* @access public |
| 479 |
* |
| 480 |
* @return int native MySQL error code |
| 481 |
*/ |
| 482 |
|
| 483 |
function errorNative() |
| 484 |
{ |
| 485 |
return mysql_errno($this->connection); |
| 486 |
} |
| 487 |
|
| 488 |
// }}} |
| 489 |
// {{{ nextId() |
| 490 |
|
| 491 |
/** |
| 492 |
* Get the next value in a sequence. We emulate sequences |
| 493 |
* for MySQL. Will create the sequence if it does not exist. |
| 494 |
* |
| 495 |
* @access public |
| 496 |
* |
| 497 |
* @param string $seq_name the name of the sequence |
| 498 |
* |
| 499 |
* @param bool $ondemand whether to create the sequence table on demand |
| 500 |
* (default is true) |
| 501 |
* |
| 502 |
* @return mixed a sequence integer, or a DB error |
| 503 |
*/ |
| 504 |
function nextId($seq_name, $ondemand = true) |
| 505 |
{ |
| 506 |
$seqname = $this->getSequenceName($seq_name); |
| 507 |
do { |
| 508 |
$repeat = 0; |
| 509 |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
| 510 |
$result = $this->query("UPDATE ${seqname} ". |
| 511 |
'SET id=LAST_INSERT_ID(id+1)'); |
| 512 |
$this->popErrorHandling(); |
| 513 |
if ($result == DB_OK) { |
| 514 |
/** COMMON CASE **/ |
| 515 |
$id = mysql_insert_id($this->connection); |
| 516 |
if ($id != 0) { |
| 517 |
return $id; |
| 518 |
} |
| 519 |
/** EMPTY SEQ TABLE **/ |
| 520 |
// Sequence table must be empty for some reason, so fill it and return 1 |
| 521 |
// Obtain a user-level lock |
| 522 |
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
| 523 |
if (DB::isError($result)) { |
| 524 |
return $this->raiseError($result); |
| 525 |
} |
| 526 |
if ($result == 0) { |
| 527 |
// Failed to get the lock, bail with a DB_ERROR_NOT_LOCKED error |
| 528 |
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
| 529 |
} |
| 530 |
|
| 531 |
// add the default value |
| 532 |
$result = $this->query("REPLACE INTO ${seqname} VALUES (0)"); |
| 533 |
if (DB::isError($result)) { |
| 534 |
return $this->raiseError($result); |
| 535 |
} |
| 536 |
|
| 537 |
// Release the lock |
| 538 |
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); |
| 539 |
if (DB::isError($result)) { |
| 540 |
return $this->raiseError($result); |
| 541 |
} |
| 542 |
// We know what the result will be, so no need to try again |
| 543 |
return 1; |
| 544 |
|
| 545 |
/** ONDEMAND TABLE CREATION **/ |
| 546 |
} elseif ($ondemand && DB::isError($result) && |
| 547 |
$result->getCode() == DB_ERROR_NOSUCHTABLE) |
| 548 |
{ |
| 549 |
$result = $this->createSequence($seq_name); |
| 550 |
// Since createSequence initializes the ID to be 1, |
| 551 |
// we do not need to retrieve the ID again (or we will get 2) |
| 552 |
if (DB::isError($result)) { |
| 553 |
return $this->raiseError($result); |
| 554 |
} else { |
| 555 |
// First ID of a newly created sequence is 1 |
| 556 |
return 1; |
| 557 |
} |
| 558 |
|
| 559 |
/** BACKWARDS COMPAT **/ |
| 560 |
} elseif (DB::isError($result) && |
| 561 |
$result->getCode() == DB_ERROR_ALREADY_EXISTS) |
| 562 |
{ |
| 563 |
// see _BCsequence() comment |
| 564 |
$result = $this->_BCsequence($seqname); |
| 565 |
if (DB::isError($result)) { |
| 566 |
return $this->raiseError($result); |
| 567 |
} |
| 568 |
$repeat = 1; |
| 569 |
} |
| 570 |
} while ($repeat); |
| 571 |
|
| 572 |
return $this->raiseError($result); |
| 573 |
} |
| 574 |
|
| 575 |
// }}} |
| 576 |
// {{{ createSequence() |
| 577 |
|
| 578 |
function createSequence($seq_name) |
| 579 |
{ |
| 580 |
$seqname = $this->getSequenceName($seq_name); |
| 581 |
$res = $this->query("CREATE TABLE ${seqname} ". |
| 582 |
'(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'. |
| 583 |
' PRIMARY KEY(id))'); |
| 584 |
if (DB::isError($res)) { |
| 585 |
return $res; |
| 586 |
} |
| 587 |
// insert yields value 1, nextId call will generate ID 2 |
| 588 |
return $this->query("INSERT INTO ${seqname} VALUES(0)"); |
| 589 |
} |
| 590 |
|
| 591 |
// }}} |
| 592 |
// {{{ dropSequence() |
| 593 |
|
| 594 |
function dropSequence($seq_name) |
| 595 |
{ |
| 596 |
$seqname = $this->getSequenceName($seq_name); |
| 597 |
return $this->query("DROP TABLE ${seqname}"); |
| 598 |
} |
| 599 |
|
| 600 |
// }}} |
| 601 |
|
| 602 |
/** |
| 603 |
* Bacwards Compatibility with old sequence emulation implementation |
| 604 |
* (clean up the dupes) |
| 605 |
* @param string $seqname The sequence name to clean up |
| 606 |
* @return mixed DB_Error or true |
| 607 |
*/ |
| 608 |
function _BCsequence($seqname) |
| 609 |
{ |
| 610 |
// Obtain a user-level lock... this will release any previous |
| 611 |
// application locks, but unlike LOCK TABLES, it does not abort |
| 612 |
// the current transaction and is much less frequently used. |
| 613 |
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
| 614 |
if (DB::isError($result)) { |
| 615 |
return $result; |
| 616 |
} |
| 617 |
if ($result == 0) { |
| 618 |
// Failed to get the lock, can't do the conversion, bail |
| 619 |
// with a DB_ERROR_NOT_LOCKED error |
| 620 |
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
| 621 |
} |
| 622 |
|
| 623 |
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}"); |
| 624 |
if (DB::isError($highest_id)) { |
| 625 |
return $highest_id; |
| 626 |
} |
| 627 |
// This should kill all rows except the highest |
| 628 |
// We should probably do something if $highest_id isn't |
| 629 |
// numeric, but I'm at a loss as how to handle that... |
| 630 |
$result = $this->query("DELETE FROM ${seqname} WHERE id <> $highest_id"); |
| 631 |
if (DB::isError($result)) { |
| 632 |
return $result; |
| 633 |
} |
| 634 |
|
| 635 |
// If another thread has been waiting for this lock, |
| 636 |
// it will go thru the above procedure, but will have no |
| 637 |
// real effect |
| 638 |
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); |
| 639 |
if (DB::isError($result)) { |
| 640 |
return $result; |
| 641 |
} |
| 642 |
return true; |
| 643 |
} |
| 644 |
|
| 645 |
// {{{ quote() |
| 646 |
/** |
| 647 |
* Quote the given string so it can be safely used within string delimiters |
| 648 |
* in a query. |
| 649 |
* @param $string mixed Data to be quoted |
| 650 |
* @return mixed "NULL" string, quoted string or original data |
| 651 |
*/ |
| 652 |
function quote($str = null) |
| 653 |
{ |
| 654 |
switch (strtolower(gettype($str))) { |
| 655 |
case 'null': |
| 656 |
return 'NULL'; |
| 657 |
case 'integer': |
| 658 |
return $str; |
| 659 |
case 'string': |
| 660 |
default: |
| 661 |
return "'".mysql_escape_string($str)."'"; |
| 662 |
} |
| 663 |
} |
| 664 |
// }}} |
| 665 |
// {{{ modifyQuery() |
| 666 |
|
| 667 |
function modifyQuery($query, $subject = null) |
| 668 |
{ |
| 669 |
if ($this->options['optimize'] == 'portability') { |
| 670 |
// "DELETE FROM table" gives 0 affected rows in MySQL. |
| 671 |
// This little hack lets you know how many rows were deleted. |
| 672 |
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { |
| 673 |
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', |
| 674 |
'DELETE FROM \1 WHERE 1=1', $query); |
| 675 |
} |
| 676 |
} |
| 677 |
return $query; |
| 678 |
} |
| 679 |
|
| 680 |
// }}} |
| 681 |
// {{{ modifyLimitQuery() |
| 682 |
|
| 683 |
function modifyLimitQuery($query, $from, $count) |
| 684 |
{ |
| 685 |
$query = $query . " LIMIT $from, $count"; |
| 686 |
return $query; |
| 687 |
} |
| 688 |
|
| 689 |
// }}} |
| 690 |
// {{{ mysqlRaiseError() |
| 691 |
|
| 692 |
function mysqlRaiseError($errno = null) |
| 693 |
{ |
| 694 |
if ($errno === null) { |
| 695 |
$errno = $this->errorCode(mysql_errno($this->connection)); |
| 696 |
} |
| 697 |
return $this->raiseError($errno, null, null, null, |
| 698 |
@mysql_errno($this->connection) . " ** " . |
| 699 |
@mysql_error($this->connection)); |
| 700 |
} |
| 701 |
|
| 702 |
// }}} |
| 703 |
// {{{ tableInfo() |
| 704 |
|
| 705 |
function tableInfo($result, $mode = null) { |
| 706 |
$count = 0; |
| 707 |
$id = 0; |
| 708 |
$res = array(); |
| 709 |
|
| 710 |
/* |
| 711 |
* depending on $mode, metadata returns the following values: |
| 712 |
* |
| 713 |
* - mode is false (default): |
| 714 |
* $result[]: |
| 715 |
* [0]["table"] table name |
| 716 |
* [0]["name"] field name |
| 717 |
* [0]["type"] field type |
| 718 |
* [0]["len"] field length |
| 719 |
* [0]["flags"] field flags |
| 720 |
* |
| 721 |
* - mode is DB_TABLEINFO_ORDER |
| 722 |
* $result[]: |
| 723 |
* ["num_fields"] number of metadata records |
| 724 |
* [0]["table"] table name |
| 725 |
* [0]["name"] field name |
| 726 |
* [0]["type"] field type |
| 727 |
* [0]["len"] field length |
| 728 |
* [0]["flags"] field flags |
| 729 |
* ["order"][field name] index of field named "field name" |
| 730 |
* The last one is used, if you have a field name, but no index. |
| 731 |
* Test: if (isset($result['meta']['myfield'])) { ... |
| 732 |
* |
| 733 |
* - mode is DB_TABLEINFO_ORDERTABLE |
| 734 |
* the same as above. but additionally |
| 735 |
* ["ordertable"][table name][field name] index of field |
| 736 |
* named "field name" |
| 737 |
* |
| 738 |
* this is, because if you have fields from different |
| 739 |
* tables with the same field name * they override each |
| 740 |
* other with DB_TABLEINFO_ORDER |
| 741 |
* |
| 742 |
* you can combine DB_TABLEINFO_ORDER and |
| 743 |
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER | |
| 744 |
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL |
| 745 |
*/ |
| 746 |
|
| 747 |
// if $result is a string, then we want information about a |
| 748 |
// table without a resultset |
| 749 |
if (is_string($result)) { |
| 750 |
$id = @mysql_list_fields($this->dsn['database'], |
| 751 |
$result, $this->connection); |
| 752 |
if (empty($id)) { |
| 753 |
return $this->mysqlRaiseError(); |
| 754 |
} |
| 755 |
} else { // else we want information about a resultset |
| 756 |
$id = $result; |
| 757 |
if (empty($id)) { |
| 758 |
return $this->mysqlRaiseError(); |
| 759 |
} |
| 760 |
} |
| 761 |
|
| 762 |
$count = @mysql_num_fields($id); |
| 763 |
|
| 764 |
// made this IF due to performance (one if is faster than $count if's) |
| 765 |
if (empty($mode)) { |
| 766 |
for ($i=0; $i<$count; $i++) { |
| 767 |
$res[$i]['table'] = @mysql_field_table ($id, $i); |
| 768 |
$res[$i]['name'] = @mysql_field_name ($id, $i); |
| 769 |
$res[$i]['type'] = @mysql_field_type ($id, $i); |
| 770 |
$res[$i]['len'] = @mysql_field_len ($id, $i); |
| 771 |
$res[$i]['flags'] = @mysql_field_flags ($id, $i); |
| 772 |
} |
| 773 |
} else { // full |
| 774 |
$res['num_fields']= $count; |
| 775 |
|
| 776 |
for ($i=0; $i<$count; $i++) { |
| 777 |
$res[$i]['table'] = @mysql_field_table ($id, $i); |
| 778 |
$res[$i]['name'] = @mysql_field_name ($id, $i); |
| 779 |
$res[$i]['type'] = @mysql_field_type ($id, $i); |
| 780 |
$res[$i]['len'] = @mysql_field_len ($id, $i); |
| 781 |
$res[$i]['flags'] = @mysql_field_flags ($id, $i); |
| 782 |
if ($mode & DB_TABLEINFO_ORDER) { |
| 783 |
$res['order'][$res[$i]['name']] = $i; |
| 784 |
} |
| 785 |
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
| 786 |
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
| 787 |
} |
| 788 |
} |
| 789 |
} |
| 790 |
|
| 791 |
// free the result only if we were called on a table |
| 792 |
if (is_string($result)) { |
| 793 |
@mysql_free_result($id); |
| 794 |
} |
| 795 |
return $res; |
| 796 |
} |
| 797 |
|
| 798 |
// }}} |
| 799 |
// {{{ getTablesQuery() |
| 800 |
|
| 801 |
/** |
| 802 |
* Returns the query needed to get some backend info |
| 803 |
* @param string $type What kind of info you want to retrieve |
| 804 |
* @return string The SQL query string |
| 805 |
*/ |
| 806 |
function getSpecialQuery($type) |
| 807 |
{ |
| 808 |
switch ($type) { |
| 809 |
case 'tables': |
| 810 |
$sql = "SHOW TABLES"; |
| 811 |
break; |
| 812 |
case 'views': |
| 813 |
return DB_ERROR_NOT_CAPABLE; |
| 814 |
case 'users': |
| 815 |
$sql = "select distinct User from user"; |
| 816 |
if($this->dsn['database'] != 'mysql') { |
| 817 |
$dsn = $this->dsn; |
| 818 |
$dsn['database'] = 'mysql'; |
| 819 |
if (DB::isError($db = DB::connect($dsn))) { |
| 820 |
return $db; |
| 821 |
} |
| 822 |
$sql = $db->getCol($sql); |
| 823 |
$db->disconnect(); |
| 824 |
// XXX Fixme the mysql driver should take care of this |
| 825 |
if (!@mysql_select_db($this->dsn['database'], $this->connection)) { |
| 826 |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
| 827 |
} |
| 828 |
} |
| 829 |
return $sql; |
| 830 |
break; |
| 831 |
case 'databases': |
| 832 |
$sql = "SHOW DATABASES"; |
| 833 |
break; |
| 834 |
default: |
| 835 |
return null; |
| 836 |
} |
| 837 |
return $sql; |
| 838 |
} |
| 839 |
|
| 840 |
// }}} |
| 841 |
|
| 842 |
// TODO/wishlist: |
| 843 |
// longReadlen |
| 844 |
// binmode |
| 845 |
} |
| 846 |
|
| 847 |
?> |
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