note 101147 added to functions.user-defined

function useful_recursion($haystack, $needle) { # Recursive implementation of in_array. # Not recommended for production use; PHP's stack is # too short. Use builtin in_array() instead. if (!is_array($haystack)) { trigger_error("First argument to useful_recursion() must be an array.", E_USER_ERROR); }; if (count($haystack) == 0) { # nothing left in the haystack, and we didn't find the needle return false; }; # take the next element of $haystack for comparison # (note that this shortens $haystack by one each time # through the function) $straw = array_pop($haystack); if ($needle == $straw) { # found it! return true; }; # this straw isn't the needle, but there's more hay in the # stack -- here's where we recur return useful_recursion($haystack, $needle); } ---- Server IP: 208.69.120.55 Probable Submitter: 209.116.252.179 ---- Manual Page -- http://www.php.net/manual/en/functions.user-defined.php Edit -- https://master.php.net/note/edit/101147 Del: integrated -- https://master.php.net/note/delete/101147/integrated Del: useless -- https://master.php.net/note/delete/101147/useless Del: bad code -- https://master.php.net/note/delete/101147/bad+code Del: spam -- https://master.php.net/note/delete/101147/spam Del: non-english -- https://master.php.net/note/delete/101147/non-english Del: in docs -- https://master.php.net/note/delete/101147/in+docs Del: other reasons-- https://master.php.net/note/delete/101147 Reject -- https://master.php.net/note/reject/101147 Search -- https://master.php.net/manage/user-notes.php