3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a($a) { echo "a [" . $a . "]"; } a(); a("123"); ?>
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught ArgumentCountError: Too few arguments to function a(), 0 passed in /in/RXZXZ on line 8 and exactly 1 expected in /in/RXZXZ:3 Stack trace: #0 /in/RXZXZ(8): a() #1 {main} thrown in /in/RXZXZ on line 3
Process exited with code 255.
Output for 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
Warning: Missing argument 1 for a(), called in /in/RXZXZ on line 8 and defined in /in/RXZXZ on line 3 Notice: Undefined variable: a in /in/RXZXZ on line 5 a []a [123]
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
Warning: Missing argument 1 for a() in /in/RXZXZ on line 3 a []a [123]

preferences:
274.95 ms | 402 KiB | 462 Q