3v4l.org

run code in 300+ PHP versions simultaneously
<?php $error = ""; if(!error) { echo "No errors"; } else { echo "Errors: ".$error; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "error" in /in/qCjkF:4 Stack trace: #0 {main} thrown in /in/qCjkF on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant error - assumed 'error' (this will throw an Error in a future version of PHP) in /in/qCjkF on line 4 Errors:
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant error - assumed 'error' in /in/qCjkF on line 4 Errors:

preferences:
236.39 ms | 402 KiB | 330 Q