note 20853 deleted from function.array-walk by aidan

Note Submitter: wes-at-marriedguys-dot-com ---- This might be overly-obvious, but when using array_walk(), the function being called should not return anything. For example, imagine a function that does a basic clean-up of a form field: function clean_up ($field) { $field = trim($field); $field = strip_tags($field); return $field; } This works just fine when passing it a variable like a single field, but if passing it an array, then you need to remove the return line. function clean_up_array (&$fields_array) { $fields_array = trim($fields_array); $fields_array = strip_tags($fields_array); }