3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( array( 'firstname' => 'Bob', 'lastname' => 'Tomato' ), array( 'firstname' => 'Larry', 'lastname' => 'Cucumber' ) ); $keys = array_keys($arr[0]); // get all keys; $var = call_user_func_array("array_column", array_merge(array($arr), $keys)); print_r($var); ?>

preferences:
39.48 ms | 402 KiB | 5 Q