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run code in 200+ php & hhvm versions
Bugs & Features
<?php $mine = [ 'foo' => '' ]; $yours = [ 'foo' => 1 ]; var_dump( array_merge( $mine, $yours ) );
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
array(1) { ["foo"]=> int(1) }