Online PHP editor | refs for TTToS

<?php $array1 = array( array('id' => 1, 'name' => 'John Doe', 'age' => 20), array('id' => 2, 'name' => 'Mae Doe', 'age' => 17), array('id' => 3, 'name' => 'Mark Smith', 'age' => 35), array('id' => 4, 'name' => 'Selena Smith', 'age' => 15), array('id' => 5, 'name' => 'Shane Doe', 'age' => 26), array('id' => 6, 'name' => 'Will Smith', 'age' => 45) ); $array2 = array( array('id' => 1, 'address' => 'Singapore', 'phone_number' => '123', 'store_name' => 'ABC'), array('id' => 4, 'address' => 'Japan', 'phone_number' => '456', 'store_name' => 'DEF'), array('id' => 5, 'address' => 'Korea', 'phone_number' => '789', 'store_name' => 'GHI') ); $addresses = array_column($array2, null, 'id'); foreach ($array1 as &$arr) { if (isset($addresses[$arr['id']])) $arr = array_merge($arr, $addresses[$arr['id']]); } print_r($array1);