note 129697 added to function.usort

A sort function to sort elements by a reference order. function sort_by_reference(array $array_to_sort, array $reference_array): array { usort($array_to_sort, function($a, $b) use ($reference_array) { $pos_a = array_search($a, $reference_array); $pos_b = array_search($b, $reference_array); return $pos_a - $pos_b; }); return $array_to_sort; } // Example usage $reference_array = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"]; $array_to_sort = ["three", "one", "seven", "four", "ten"]; $sorted_array = sort_by_reference($array_to_sort, $reference_array); // Print the result to verify the sorting print_r($sorted_array); ``` Array ( [0] => one [1] => three [2] => four [3] => seven [4] => ten ) ``` ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.137 (proxied: 185.146.164.254) ---- Manual Page -- https://php.net/manual/en/function.usort.php Edit -- https://main.php.net/note/edit/129697 Del: integrated -- https://main.php.net/note/delete/129697/integrated Del: useless -- https://main.php.net/note/delete/129697/useless Del: bad code -- https://main.php.net/note/delete/129697/bad+code Del: spam -- https://main.php.net/note/delete/129697/spam Del: non-english -- https://main.php.net/note/delete/129697/non-english Del: in docs -- https://main.php.net/note/delete/129697/in+docs Del: other reasons-- https://main.php.net/note/delete/129697 Reject -- https://main.php.net/note/reject/129697 Search -- https://main.php.net/manage/user-notes.php