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<?php $arr1= array('a' => "XL"); $arr2= array('a' => "XLd",'b'=>"CDW"); array_walk( $arr2, function(&$val,$key) use ($arr1){ if(isset($arr1[$key])){ $val = $arr1[$key]; } else { $val = ''; } } ); print_r($arr2);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [a] => XL [b] => )

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