3v4l.org

run code in 300+ PHP versions simultaneously
<?php function transformQuestionnaire($arr) { $new_arr = array(); foreach ($arr as $array){ if (!in_array($array[0], array_keys($new_arr))){ //not a double $new_arr[$key] = $array[1]; } else { //Append it to the existing value $new_arr[$key] .= '|' . $array[1]; } } return $new_arr; } $input = array( array("one", "potato"), array("two", "fries"), array("one", "ketchup"), array("two", "steak")); print(var_dump(transformQuestionnaire($input))); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $key in /in/68bQP on line 6 Warning: Undefined variable $key in /in/68bQP on line 6 Warning: Undefined variable $key in /in/68bQP on line 6 Warning: Undefined variable $key in /in/68bQP on line 6 array(1) { [""]=> string(5) "steak" }

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
42.37 ms | 402 KiB | 8 Q