3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = ‘cat’; var_dump(isset($string[‘type’]));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "‘cat’" in /in/87Y0J:3 Stack trace: #0 {main} thrown in /in/87Y0J on line 3
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 ‘cat’ - assumed '‘cat’' (this will throw an Error in a future version of PHP) in /in/87Y0J on line 3 Warning: Use of undefined constant ‘type’ - assumed '‘type’' (this will throw an Error in a future version of PHP) in /in/87Y0J on line 4 bool(false)
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 ‘cat’ - assumed '‘cat’' in /in/87Y0J on line 3 Notice: Use of undefined constant ‘type’ - assumed '‘type’' in /in/87Y0J on line 4 bool(false)

preferences:
225.03 ms | 402 KiB | 326 Q