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07c3cdd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | <?php
require_once 'creole/IdGenerator.php';
/**
* MySQL IdGenerator implimenation.
*
* @author Hans Lellelid <hans@xmpl.org>
* @version $Revision: 1.6 $
* @package creole.drivers.mysql
*/
class MySQLIdGenerator implements IdGenerator {
/** Connection object that instantiated this class */
private $conn;
/**
* Creates a new IdGenerator class, saves passed connection for use
* later by getId() method.
* @param Connection $conn
*/
public function __construct(Connection $conn)
{
$this->conn = $conn;
}
/**
* @see IdGenerator::isBeforeInsert()
*/
public function isBeforeInsert()
{
return false;
}
/**
* @see IdGenerator::isAfterInsert()
*/
public function isAfterInsert()
{
return true;
}
/**
* @see IdGenerator::getIdMethod()
*/
public function getIdMethod()
{
return self::AUTOINCREMENT;
}
/**
* Returns last-generated auto-increment ID.
*
* Note that for very large values (2,147,483,648 to 9,223,372,036,854,775,807) a string
* will be returned, because these numbers are larger than supported by PHP's native
* numeric datatypes.
*
* @see IdGenerator::getId()
*/
public function getId($unused = null)
{
$insert_id = mysql_insert_id($this->conn->getResource());
if ( $insert_id < 0 ) {
$insert_id = null;
$result = mysql_query('SELECT LAST_INSERT_ID()', $this->conn->getResource());
if ( $result ) {
$row = mysql_fetch_row($result);
$insert_id = $row ? $row[0] : null;
}
}
return $insert_id;
}
}
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