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<?php $targetArray = array('a'=>'','b'=>'','c'=>'','d'=>''); $sourceArray = array('a'=>'a','c'=>'c','d'=>'d'); var_export(array_replace($targetArray, $sourceArray)); var_export($sourceArray + $targetArray);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 'a' => 'a', 'b' => '', 'c' => 'c', 'd' => 'd', )array ( 'a' => 'a', 'c' => 'c', 'd' => 'd', 'b' => '', )

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