97 lines
2.8 KiB
PHP
97 lines
2.8 KiB
PHP
<?php
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/*
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* $Id: MySQLiIdGenerator.php,v 1.4 2004/09/18 09:15:49 sb Exp $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information please see
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* <http://creole.phpdb.org>.
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*/
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require_once 'creole/IdGenerator.php';
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/**
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* MySQLi implementation of IdGenerator.
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*
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* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
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* @version $Revision: 1.4 $
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* @package creole.drivers.mysqli
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*/
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class MySQLiIdGenerator implements IdGenerator {
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/** Connection object that instantiated this class */
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private $conn;
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/**
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* Creates a new IdGenerator class, saves passed connection for use
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* later by getId() method.
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* @param Connection $conn
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*/
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public function __construct(Connection $conn)
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{
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$this->conn = $conn;
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}
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/**
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* @see IdGenerator::isBeforeInsert()
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*/
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public function isBeforeInsert()
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{
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return false;
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}
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/**
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* @see IdGenerator::isAfterInsert()
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*/
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public function isAfterInsert()
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{
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return true;
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}
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/**
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* @see IdGenerator::getIdMethod()
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*/
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public function getIdMethod()
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{
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return self::AUTOINCREMENT;
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}
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/**
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* Returns last-generated auto-increment ID.
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*
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* Note that for very large values (2,147,483,648 to 9,223,372,036,854,775,807) a string
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* will be returned, because these numbers are larger than supported by PHP's native
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* numeric datatypes.
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*
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* @see IdGenerator::getId()
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*/
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public function getId($unused = null)
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{
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$resource = $this->conn->getResource();
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$insert_id = mysqli_insert_id($resource);
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if ( $insert_id < 0 ) {
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$insert_id = null;
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$result = mysqli_query($resource, 'SELECT LAST_INSERT_ID()');
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if ( $result ) {
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$row = mysqli_fetch_row($result);
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$insert_id = $row ? $row[0] : null;
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}
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}
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return $insert_id;
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}
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}
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