向二维数组中添加元素

//向二维数组中添加元素$a = array (0 => array ("name" => "a","mail" => "b" ),1 => array ("name" => "d","mail" => "e" ) );function addkey(&$val, $key, $param) {$val [$param ['key']] = $param ['val'];}array_walk ( $a, 'addkey', array ('key' => 'tel','val' => '123' ) );print_r ( $a );