3v4l.org

run code in 300+ PHP versions simultaneously
<?php print array_unique(null);
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 TypeError: array_unique(): Argument #1 ($array) must be of type array, null given in /in/SvfQT:2 Stack trace: #0 /in/SvfQT(2): array_unique(NULL) #1 {main} thrown in /in/SvfQT on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_unique() expects parameter 1 to be array, null given in /in/SvfQT on line 2
Output for 4.3.2 - 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
Warning: array_unique(): The argument should be an array in /in/SvfQT on line 2
Output for 4.3.0 - 4.3.1
Warning: array_unique() [http://www.php.net/function.array-unique]: The argument should be an array in /in/SvfQT on line 2

preferences:
221.25 ms | 402 KiB | 370 Q