Source for file mysqli.php
Documentation is available at mysqli.php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
* The PEAR DB driver for PHP's mysqli extension
* for interacting with MySQL databases
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version CVS: $Id: mysqli.php,v 1.82 2007/09/21 13:40:41 aharvey Exp $
* @link http://pear.php.net/package/DB
* Obtain the DB_common class so it can be extended from
require_once 'DB/common.php';
* The methods PEAR DB uses to interact with PHP's mysqli extension
* for interacting with MySQL databases
* This is for MySQL versions 4.1 and above. Requires PHP 5.
* Note that persistent connections no longer exist.
* These methods overload the ones declared in DB_common.
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: 1.7.14RC1
* @link http://pear.php.net/package/DB
* @since Class functional since Release 1.6.3
* The DB driver type (mysql, oci8, odbc, etc.)
* The database syntax variant to be used (db2, access, etc.), if any
* The capabilities of this DB implementation
* The 'new_link' element contains the PHP version that first provided
* new_link support for this DBMS. Contains false if it's unsupported.
* Meaning of the 'limit' element:
* + 'emulate' = emulate with fetch row by number
* + 'alter' = alter the query
* A mapping of native error codes to DB error codes
1004 => DB_ERROR_CANNOT_CREATE ,
1005 => DB_ERROR_CANNOT_CREATE ,
1006 => DB_ERROR_CANNOT_CREATE ,
1007 => DB_ERROR_ALREADY_EXISTS ,
1008 => DB_ERROR_CANNOT_DROP ,
1022 => DB_ERROR_ALREADY_EXISTS ,
1044 => DB_ERROR_ACCESS_VIOLATION ,
1046 => DB_ERROR_NODBSELECTED ,
1048 => DB_ERROR_CONSTRAINT ,
1049 => DB_ERROR_NOSUCHDB ,
1050 => DB_ERROR_ALREADY_EXISTS ,
1051 => DB_ERROR_NOSUCHTABLE ,
1054 => DB_ERROR_NOSUCHFIELD ,
1061 => DB_ERROR_ALREADY_EXISTS ,
1062 => DB_ERROR_ALREADY_EXISTS ,
1091 => DB_ERROR_NOT_FOUND ,
1100 => DB_ERROR_NOT_LOCKED ,
1136 => DB_ERROR_VALUE_COUNT_ON_ROW ,
1142 => DB_ERROR_ACCESS_VIOLATION ,
1146 => DB_ERROR_NOSUCHTABLE ,
1216 => DB_ERROR_CONSTRAINT ,
1217 => DB_ERROR_CONSTRAINT ,
1356 => DB_ERROR_DIVZERO ,
1451 => DB_ERROR_CONSTRAINT ,
1452 => DB_ERROR_CONSTRAINT ,
* The raw database connection created by PHP
* The DSN information for connecting to a database
* Should data manipulation queries be committed automatically?
* The quantity of transactions begun
* {@internal While this is private, it can't actually be designated
* private in PHP 5 because it is directly accessed in the test suite.}}}
var $transaction_opcount = 0;
* The database specified in the DSN
* It's a fix to allow calls to different databases in the same script.
* Array for converting MYSQLI_*_FLAG constants to text values
* @since Property available since Release 1.6.5
MYSQLI_NOT_NULL_FLAG => 'not_null',
MYSQLI_PRI_KEY_FLAG => 'primary_key',
MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
MYSQLI_BLOB_FLAG => 'blob',
MYSQLI_UNSIGNED_FLAG => 'unsigned',
MYSQLI_ZEROFILL_FLAG => 'zerofill',
MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
MYSQLI_TIMESTAMP_FLAG => 'timestamp',
MYSQLI_SET_FLAG => 'set',
// MYSQLI_NUM_FLAG => 'numeric', // unnecessary
// MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
MYSQLI_GROUP_FLAG => 'group_by'
* Array for converting MYSQLI_TYPE_* constants to text values
* @since Property available since Release 1.6.5
MYSQLI_TYPE_DECIMAL => 'decimal',
MYSQLI_TYPE_TINY => 'tinyint',
MYSQLI_TYPE_SHORT => 'int',
MYSQLI_TYPE_LONG => 'int',
MYSQLI_TYPE_FLOAT => 'float',
MYSQLI_TYPE_DOUBLE => 'double',
// MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
MYSQLI_TYPE_TIMESTAMP => 'timestamp',
MYSQLI_TYPE_LONGLONG => 'bigint',
MYSQLI_TYPE_INT24 => 'mediumint',
MYSQLI_TYPE_DATE => 'date',
MYSQLI_TYPE_TIME => 'time',
MYSQLI_TYPE_DATETIME => 'datetime',
MYSQLI_TYPE_YEAR => 'year',
MYSQLI_TYPE_NEWDATE => 'date',
MYSQLI_TYPE_ENUM => 'enum',
MYSQLI_TYPE_SET => 'set',
MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
MYSQLI_TYPE_LONG_BLOB => 'longblob',
MYSQLI_TYPE_BLOB => 'blob',
MYSQLI_TYPE_VAR_STRING => 'varchar',
MYSQLI_TYPE_STRING => 'char',
MYSQLI_TYPE_GEOMETRY => 'geometry',
/* These constants are conditionally compiled in ext/mysqli, so we'll
* define them by number rather than constant. */
* This constructor calls <kbd>$this->DB_common()</kbd>
* Connect to the database server, log in and open the database
* Don't call this method directly. Use DB::connect() instead.
* PEAR DB's mysqli driver supports the following extra DSN options:
* + When the 'ssl' $option passed to DB::connect() is true:
* + key The path to the key file.
* + cert The path to the certificate file.
* + ca The path to the certificate authority file.
* + capath The path to a directory that contains trusted SSL
* CA certificates in pem format.
* + cipher The list of allowable ciphers for SSL encryption.
* Example of how to connect using SSL:
* 'username' => 'someuser',
* 'password' => 'apasswd',
* 'hostspec' => 'localhost',
* 'key' => 'client-key.pem',
* 'cert' => 'client-cert.pem',
* 'capath' => '/path/to/ca/dir',
* $db = DB::connect($dsn, $options);
* if (PEAR::isError($db)) {
* die($db->getMessage());
* @param array $dsn the data source name
* @param bool $persistent should the connection be persistent?
* @return int DB_OK on success. A DB_Error object on failure.
function connect($dsn, $persistent = false )
if (!PEAR ::loadExtension ('mysqli')) {
empty ($dsn['key']) ? null : $dsn['key'],
empty ($dsn['cert']) ? null : $dsn['cert'],
empty ($dsn['ca']) ? null : $dsn['ca'],
empty ($dsn['capath']) ? null : $dsn['capath'],
empty ($dsn['cipher']) ? null : $dsn['cipher']
if (($err = @mysqli_connect_error ()) != '') {
$this->_db = $dsn['database'];
* Disconnects from the database server
* @return bool TRUE on success, FALSE on failure
* Sends a query to the database server
* @param string the SQL query string
* @return mixed + a PHP result resrouce for successful SELECT queries
* + the DB_OK constant for other successful queries
* + a DB_Error object on failure
if (!@mysqli_select_db ($this->connection, $this->_db)) {
if (!$this->autocommit && $ismanip) {
if ($this->transaction_opcount == 0 ) {
$result = @mysqli_query ($this->connection, 'SET AUTOCOMMIT=0');
$result = @mysqli_query ($this->connection, 'BEGIN');
$this->transaction_opcount++;
$result = @mysqli_query ($this->connection, $query);
* Move the internal mysql result pointer to the next available result.
* This method has not been implemented yet.
* @param resource $result a valid sql result resource
* Places a row from the result set into the given array
* Formating of the array and the data therein are configurable.
* See DB_result::fetchInto() for more information.
* This method is not meant to be called directly. Use
* DB_result::fetchInto() instead. It can't be declared "protected"
* because DB_result is a separate object.
* @param resource $result the query result resource
* @param array $arr the referenced array to put the data in
* @param int $fetchmode how the resulting array should be indexed
* @param int $rownum the row number to fetch (0 = first row)
* @return mixed DB_OK on success, NULL when the end of a result set is
* @see DB_result::fetchInto()
function fetchInto($result, &$arr, $fetchmode, $rownum = null )
if (!@mysqli_data_seek ($result, $rownum)) {
$arr = @mysqli_fetch_array ($result, MYSQLI_ASSOC );
$arr = @mysqli_fetch_row ($result);
* Even though this DBMS already trims output, we do this because
* a field might have intentional whitespace at the end that
* gets removed by DB_PORTABILITY_RTRIM under another driver.
* Deletes the result set and frees the memory occupied by the result set
* This method is not meant to be called directly. Use
* DB_result::free() instead. It can't be declared "protected"
* because DB_result is a separate object.
* @param resource $result PHP's query result resource
* @return bool TRUE on success, FALSE if $result is invalid
return is_resource($result) ? mysqli_free_result ($result) : false;
* Gets the number of columns in a result set
* This method is not meant to be called directly. Use
* DB_result::numCols() instead. It can't be declared "protected"
* because DB_result is a separate object.
* @param resource $result PHP's query result resource
* @return int the number of columns. A DB_Error object on failure.
* @see DB_result::numCols()
$cols = @mysqli_num_fields ($result);
* Gets the number of rows in a result set
* This method is not meant to be called directly. Use
* DB_result::numRows() instead. It can't be declared "protected"
* because DB_result is a separate object.
* @param resource $result PHP's query result resource
* @return int the number of rows. A DB_Error object on failure.
* @see DB_result::numRows()
$rows = @mysqli_num_rows ($result);
* Enables or disables automatic commits
* @param bool $onoff true turns it on, false turns it off
* @return int DB_OK on success. A DB_Error object if the driver
* doesn't support auto-committing transactions.
// XXX if $this->transaction_opcount > 0, we should probably
$this->autocommit = $onoff ? true : false;
* Commits the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
if ($this->transaction_opcount > 0 ) {
if (!@mysqli_select_db ($this->connection, $this->_db)) {
$result = @mysqli_query ($this->connection, 'COMMIT');
$result = @mysqli_query ($this->connection, 'SET AUTOCOMMIT=1');
$this->transaction_opcount = 0;
* Reverts the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
if ($this->transaction_opcount > 0 ) {
if (!@mysqli_select_db ($this->connection, $this->_db)) {
$result = @mysqli_query ($this->connection, 'ROLLBACK');
$result = @mysqli_query ($this->connection, 'SET AUTOCOMMIT=1');
$this->transaction_opcount = 0;
* Determines the number of rows affected by a data maniuplation query
* 0 is returned for queries that don't manipulate data.
* @return int the number of rows. A DB_Error object on failure.
* Returns the next free id in a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true, the seqence is automatically
* created if it does not exist
* @return int the next id number in the sequence.
* A DB_Error object on failure.
* @see DB_common::nextID(), DB_common::getSequenceName(),
* DB_mysqli::createSequence(), DB_mysqli::dropSequence()
function nextId($seq_name, $ondemand = true )
$this->pushErrorHandling (PEAR_ERROR_RETURN );
$result = $this->query('UPDATE ' . $seqname
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