Bug #76896 [NEW]: PDO::lastInsertId resets after SELECT
From: symos at yahoo dot com
Operating system: Ubuntu 18.04
PHP version: 7.2.10
Package: PDO MySQL
Bug Type: Bug
Bug description:PDO::lastInsertId resets after SELECT
Description:
------------
When executing an INSERT query and then immediately running
PDO::lastInsertId(), the value it returns is correct. But if a SELECT
query is executed in between, lastInsertId returns 0. This did not
happen in PHP 5.5.9.
If you run "SELECT LAST_INSERT_ID();" as a raw query (even through PDO)
the result you get is correct.
I can't be sure if this is a bug or was changed intentionally, but I
would argue it's not correct for PDO's lastInsertId to return a
different value than MySQL's LAST_INSERT_ID().
Test script:
---------------
<?php
$username = "username";
$password = "password";
$pdo = new PDO("mysql:host=127.0.0.1;port=3306;dbname=test_db",
$username, $password);
$pdo->query("CREATE TABLE IF NOT EXISTS test_table (
id int(11) NOT NULL AUTO_INCREMENT,
random_field int(11) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;");
$st = $pdo->query("INSERT INTO test_table(random_field) VALUES (" .
rand(1, 100000) . ")");
if($st){
echo "last_insert_id: " . $pdo->lastInsertId() . "\n";
$pdo->query("SELECT 1 + 1");
echo "last_insert_id: " . $pdo->lastInsertId() . "\n";
}
else {
var_dump($pdo->errorInfo());
}
Expected result:
----------------
Both values should reflect ID of last inserted record
Actual result:
--------------
Second value is zero
--
Edit bug report at https://bugs.php.net/bug.php?id=76896&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76896&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76896&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76896&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=76896&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=76896&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=76896&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=76896&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=76896&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=76896&r=support
Expected behavior: https://bugs.php.net/fix.php?id=76896&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=76896&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=76896&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=76896&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76896&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=76896&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=76896&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=76896&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=76896&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=76896&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=76896&r=mysqlcfg
Thread (7 messages)
- symos at yahoo dot com