3v4l.org

run code in 300+ PHP versions simultaneously
<?php $filter = "id eq '2'"; $a = preg_grep('\d+', $filter); var_dump($a);
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: preg_grep(): Argument #2 ($array) must be of type array, string given in /in/mNFKf:4 Stack trace: #0 /in/mNFKf(4): preg_grep('\\d+', 'id eq '2'') #1 {main} thrown in /in/mNFKf on line 4
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: preg_grep() expects parameter 2 to be array, string given in /in/mNFKf on line 4 NULL
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/mNFKf on line 4 NULL
Output for 4.3.0 - 4.3.10
Warning: Second argument to preg_grep() should be an array in /in/mNFKf on line 4 NULL

preferences:
255.87 ms | 401 KiB | 459 Q