3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $metrics = [ 'alloc_inode' => '0f4240', 'close' => '1e8480', 'flock' => '2dc6c0', 'fsync' => '3d0900', 'getattr' => '4c4b40', 'getxattr' => '5b8d80', 'inode_permission' => '6acfc0', 'ioctl' => '7a1200', 'mmap' => '895440', 'open' => '989680', 'seek' => 'a7d8c0', 'setattr' => 'b71b00', 'setxattr' => 'c65d40', 'statfs' => 'd59f80', 'truncate' => 'e4e1c0' ]; dump( array_reduce(array_keys($metrics), function (&$c, $i) { $c = max(strlen($i), $c); }, 0));
based on 6hk0m
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function dump() in /in/FXl0H:17 Stack trace: #0 {main} thrown in /in/FXl0H on line 17
Process exited with code 255.
Output for 5.4.11 - 5.6.28
Fatal error: Call to undefined function dump() in /in/FXl0H on line 17
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/FXl0H on line 2
Process exited with code 255.