3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = [['cpm' => 10], ['cpm' => '20']]; usort($a, function($a,$b){ return $b['cpm'] - $a['cpm']; }); var_dump($a);
Output for 5.4.0 - 7.1.0
array(2) { [0]=> array(1) { ["cpm"]=> string(2) "20" } [1]=> array(1) { ["cpm"]=> int(10) } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/r4Nnn on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/r4Nnn on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/r4Nnn on line 2
Process exited with code 255.