1--TEST-- 2Test ob_get_level() function : error conditions 3--FILE-- 4<?php 5/* Prototype : proto int ob_get_level(void) 6 * Description: Return the nesting level of the output buffer 7 * Source code: main/output.c 8 * Alias to functions: 9 */ 10 11echo "*** Testing ob_get_level() : error conditions ***\n"; 12 13// One argument 14echo "\n-- Testing ob_get_level() function with one argument --\n"; 15$extra_arg = 10;; 16var_dump( ob_get_level($extra_arg) ); 17 18echo "Done"; 19?> 20--EXPECTF-- 21*** Testing ob_get_level() : error conditions *** 22 23-- Testing ob_get_level() function with one argument -- 24 25Warning: ob_get_level() expects exactly 0 parameters, 1 given in %s on line 13 26NULL 27Done