3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $standardErrorCodes = array( 1 => 'No Api key specified!', 2 => 'No such Api key found!', 3 => 'Api key is inactive!', ); print_r( $standardErrorCodes + array( 4 => 'No title for this ticket' ) );
Output for 4.3.0 - 7.1.0
Array ( [1] => No Api key specified! [2] => No such Api key found! [3] => Api key is inactive! [4] => No title for this ticket )