3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = array( '<?php', ' public function __construct()', ); var_dump(preg_grep('/^ public function __construct\(/', $input));
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
Warning: Undefined variable $input in /in/50SfG on line 6 Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($array) must be of type array, null given in /in/50SfG:6 Stack trace: #0 /in/50SfG(6): preg_grep('/^ public fu...', NULL) #1 {main} thrown in /in/50SfG on line 6
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: input in /in/50SfG on line 6 Warning: preg_grep() expects parameter 2 to be array, null given in /in/50SfG on line 6 NULL
Output for 7.3.32 - 7.3.33
Warning: preg_grep() expects parameter 2 to be array, null given in /in/50SfG on line 6 NULL
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6
Notice: Undefined variable: input in /in/50SfG on line 6 Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/50SfG on line 6 NULL
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: input in /in/50SfG on line 6 Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/50SfG on line 6 NULL
Output for 4.3.0 - 4.3.10
Notice: Undefined variable: input in /in/50SfG on line 6 Warning: Second argument to preg_grep() should be an array in /in/50SfG on line 6 NULL

preferences:
246.96 ms | 401 KiB | 310 Q