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run code in 150+ php & hhvm versions
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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' ) ); $user_name = array_column($arr, 'user_name', 'id'); $shop_name = array_column($arr, 'shop_name', 'id'); $arr = []; foreach($user_name as $id => $user) { $temp = ['id'=>$id, 'user_name'=>$user, 'shop_name'=>'']; if(array_key_exists($id, $shop_name)) $temp['shop_name'] = $shop_name[$id]; $arr[] = $temp; } print_r($arr);
Output for 5.5.0 - 7.1.0
Array ( [0] => Array ( [id] => 1 [user_name] => test1 [shop_name] => ) [1] => Array ( [id] => 2 [user_name] => test2 [shop_name] => ) [2] => Array ( [id] => 3 [user_name] => test3 [shop_name] => ) )
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/qVORY on line 31
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/qVORY on line 33
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/qVORY on line 33
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/qVORY on line 33
Process exited with code 255.