3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a1 = [ ['127.0.0.1',11211], ['127.0.0.2',11211], ['127.0.0.4',11211], ]; $a2 = [ ['127.0.0.1',11211], ['127.0.0.2',11211], ['127.0.0.3',11211], ['127.0.0.4',11211], ]; print_r( array_udiff( $a1, $a2, function($a,$b){ return $a[0] === $b[0]; } ) );
based on bPrBU
Output for 5.4.0 - 7.2.0
Array ( )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/kJLbf on line 3
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/kJLbf on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kJLbf on line 3
Process exited with code 255.