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<?php $arr = array( array( 'id' => 1, 'user_name'=>'test1' ), array( 'id' => 2, 'user_name'=>'test2' ), array( 'id' => 3, 'user_name'=>'test3' ) ); $arr2 = array( array( 'id' => 1, 'shop_name'=>'shop1' ), array( 'id' => 5, 'shop_name'=>'shop2' ), array( 'id' => 3, 'shop_name'=>'shop3' ) ); $shop_name = array_column($arr2, 'shop_name', 'id'); foreach($arr as $key => $item) { $exist = array_key_exists($item['id'], $shop_name); $arr[$key]['shop_name'] = $exist ? $shop_name[$item['id']] : ''; } print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [id] => 1 [user_name] => test1 [shop_name] => shop1 ) [1] => Array ( [id] => 2 [user_name] => test2 [shop_name] => ) [2] => Array ( [id] => 3 [user_name] => test3 [shop_name] => shop3 ) )

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