3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = [ 'gateway' => 'a', 'email' => 'b', 'firstname' => 'c', 'lastname' => 'd', 'gender' => 'e', 'birthDate' => 'f', 'city' => 'g', 'zip' => 'h', 'client' => 'i', ]; $b = [ 'gateway' => '1', 'email' => '2', 'firstname' => '', 'lastname' => '3', ]; print_r( array_merge($a, $b) ); print_r( array_map( function($key) { return [$a[$key] => $b[$key]]; }, array_keys($b));
based on CkMqV
Output for 5.4.0 - 5.4.34
Parse error: syntax error, unexpected ';' in /in/7jjm9 on line 25
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/7jjm9 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/7jjm9 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/7jjm9 on line 2
Process exited with code 255.