3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $mine = [ 'foo' => '' ]; $yours = [ 'foo' => 1 ]; var_dump( array_merge( $yours, $mine ) );
based on S7nua
Output for 5.4.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.0rc3
array(1) { ["foo"]=> string(0) "" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/8SPEM 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/8SPEM on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8SPEM on line 3
Process exited with code 255.