3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'array(1=>a1, 2=>a2, 3=>a3, 4=>a4, 5=>a5);'; $array = eval($str); echo $array[1]; ?>
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 "a1" in /in/Qj973(5) : eval()'d code:1 Stack trace: #0 /in/Qj973(5): eval() #1 {main} thrown in /in/Qj973(5) : eval()'d code on line 1
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Use of undefined constant a1 - assumed 'a1' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a2 - assumed 'a2' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a3 - assumed 'a3' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a4 - assumed 'a4' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a5 - assumed 'a5' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Notice: Trying to access array offset on value of type null in /in/Qj973 on line 7
Output for 7.2.6 - 7.2.33, 7.3.12 - 7.3.33
Warning: Use of undefined constant a1 - assumed 'a1' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a2 - assumed 'a2' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a3 - assumed 'a3' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a4 - assumed 'a4' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1 Warning: Use of undefined constant a5 - assumed 'a5' (this will throw an Error in a future version of PHP) in /in/Qj973(5) : eval()'d code on line 1
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant a1 - assumed 'a1' in /in/Qj973(5) : eval()'d code on line 1 Notice: Use of undefined constant a2 - assumed 'a2' in /in/Qj973(5) : eval()'d code on line 1 Notice: Use of undefined constant a3 - assumed 'a3' in /in/Qj973(5) : eval()'d code on line 1 Notice: Use of undefined constant a4 - assumed 'a4' in /in/Qj973(5) : eval()'d code on line 1 Notice: Use of undefined constant a5 - assumed 'a5' in /in/Qj973(5) : eval()'d code on line 1

preferences:
205.97 ms | 405 KiB | 313 Q