Fixed bug #80908

The last insert ID should be an unsigned integer.

Closes GH-6810.

Author: matt

NEWS

@@ -88,6 +88,9 @@ PHP                                                                        NEWS
   . Fixed bug #40913 (PDO_MYSQL: PDO::PARAM_LOB does not bind to a stream for
     fetching a BLOB). (Nikita)
 
+. PDO MySQL:
+  . Fixed bug#80908 (PDO::lastInsertId() return wrong). (matt)
+
 . PDO SQLite:
   . Fixed bug #38334 (Proper data-type support for PDO_SQLITE). (Nikita)
 

ext/pdo_mysql/mysql_driver.c

@@ -289,7 +289,7 @@ static zend_string *pdo_mysql_last_insert_id(pdo_dbh_t *dbh, const zend_string *
 {
 	pdo_mysql_db_handle *H = (pdo_mysql_db_handle *)dbh->driver_data;
 	PDO_DBG_ENTER("pdo_mysql_last_insert_id");
-	PDO_DBG_RETURN(zend_i64_to_str(mysql_insert_id(H->server)));
+	PDO_DBG_RETURN(zend_u64_to_str(mysql_insert_id(H->server)));
 }
 /* }}} */
 

ext/pdo_mysql/tests/bug80908.phpt

@@ -0,0 +1,49 @@
+--TEST--
+Bug #80908: pdo_mysql lastInsertId() return wrong, when table id bigger than the maximum value of int64
+--SKIPIF--
+<?php
+if (!extension_loaded('pdo') || !extension_loaded('pdo_mysql')) die('skip not loaded');
+require_once(__DIR__ . DIRECTORY_SEPARATOR . 'skipif.inc');
+require_once(__DIR__ . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+MySQLPDOTest::skip();
+?>
+--FILE--
+<?php
+require_once(__DIR__ . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+
+function createDB(): PDO {
+    $db = MySQLPDOTest::factory();
+    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    $db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+    return $db;
+}
+
+$db = createDB();
+$db->exec('DROP TABLE IF EXISTS test');
+$db->exec('CREATE TABLE test (`id` bigint(20) unsigned AUTO_INCREMENT, `name` varchar(5), primary key (`id`)) ENGINE = InnoDB AUTO_INCREMENT=10376293541461622799');
+
+function testLastInsertId(PDO $db) {
+    echo "Running test lastInsertId\n";
+    $db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);
+    try {
+        $db->exec("insert into test (`name`) values ('bar')");
+        $id = $db->lastInsertId();
+        echo "Last insert id is " . $id . "\n";
+    } catch (PDOException $e) {
+        echo $e->getMessage()."\n";
+    }
+}
+
+testLastInsertId($db);
+unset($db);
+echo "\n";
+
+?>
+--CLEAN--
+<?php
+require __DIR__ . '/mysql_pdo_test.inc';
+MySQLPDOTest::dropTestTable();
+?>
+--EXPECT--
+Running test lastInsertId
+Last insert id is 10376293541461622799