Библиотека для cis, online, cms1

creole/drivers/mysql/MySQLIdGenerator.php

@@ -0,0 +1,75 @@
+<?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;
+    }
+    
+}
+