3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); ob_start(); var_dump("GOOD"); var_dump(BAD); ob_end_flush();
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
string(4) "GOOD" Fatal error: Uncaught Error: Undefined constant "BAD" in /in/IC9qi:6 Stack trace: #0 {main} thrown in /in/IC9qi on line 6
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
string(4) "GOOD" Warning: Use of undefined constant BAD - assumed 'BAD' (this will throw an Error in a future version of PHP) in /in/IC9qi on line 6 string(3) "BAD"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
string(4) "GOOD" Notice: Use of undefined constant BAD - assumed 'BAD' in /in/IC9qi on line 6 string(3) "BAD"

preferences:
261.2 ms | 404 KiB | 459 Q