Библиотека для cis, online, cms1

creole/drivers/mysqli/MySQLiIdGenerator.php

@@ -0,0 +1,96 @@
+<?php
+/*
+ * $Id: MySQLiIdGenerator.php,v 1.4 2004/09/18 09:15:49 sb Exp $
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information please see
+ * <http://creole.phpdb.org>.
+ */
+
+require_once 'creole/IdGenerator.php';
+
+/**
+ * MySQLi implementation of IdGenerator.
+ *
+ * @author    Sebastian Bergmann <sb@sebastian-bergmann.de>
+ * @version   $Revision: 1.4 $
+ * @package   creole.drivers.mysqli
+ */
+class MySQLiIdGenerator 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)
+    {
+        $resource = $this->conn->getResource();
+        $insert_id = mysqli_insert_id($resource);
+
+        if ( $insert_id < 0 ) {
+            $insert_id = null;
+
+            $result = mysqli_query($resource, 'SELECT LAST_INSERT_ID()');
+
+            if ( $result ) {
+                $row = mysqli_fetch_row($result);
+                $insert_id = $row ? $row[0] : null;
+            }
+        }
+
+        return $insert_id;
+    }
+}