--TEST-- Test array_walk_recursive() function : error conditions --FILE-- <?php /* Prototype : bool array_walk_recursive(array $input, string $funcname [, mixed $userdata]) * Description: Apply a user function to every member of an array * Source code: ext/standard/array.c */ $input = array(1, 2); /* Prototype : callback(mixed value, mixed key, mixed user_data) * Parameters : value - value in key/value pair * key - key in key/value pair * user_data - extra parameter */ function callback ($value, $key, $user_data) { echo "\ncallback() invoked \n"; } echo "*** Testing array_walk_recursive() : error conditions ***\n"; echo "-- Testing array_walk_recursive() function with zero arguments --\n"; var_dump( array_walk_recursive() ); echo "-- Testing array_walk_recursive() function with one argument --\n"; var_dump( array_walk_recursive($input) ); $input = array( array(1, 2), array(3), array(4, 5)); echo "-- Testing array_walk_recursive() function with non existent callback function --\n"; var_dump( array_walk_recursive($input, "non_existent") ); echo "Done"; ?> --EXPECTF-- *** Testing array_walk_recursive() : error conditions *** -- Testing array_walk_recursive() function with zero arguments -- Warning: array_walk_recursive() expects at least 2 parameters, 0 given in %s on line %d NULL -- Testing array_walk_recursive() function with one argument -- Warning: array_walk_recursive() expects at least 2 parameters, 1 given in %s on line %d NULL -- Testing array_walk_recursive() function with non existent callback function -- Warning: array_walk_recursive() expects parameter 2 to be a valid callback, function 'non_existent' not found or invalid function name in %s on line %d NULL Done