1--TEST-- 2chown() with NULL as user name 3--SKIPIF-- 4<?php 5if(substr(PHP_OS, 0, 3) == "WIN") 6 die("skip, not supported on Windows"); 7?> 8--FILE-- 9<?php 10chown("sjhgfskhagkfdgskjfhgskfsdgfkdsajf", NULL); 11echo "ALIVE\n"; 12?> 13--EXPECTF-- 14Warning: chown(): parameter 2 should be string or int, null given in %schown.php on line %d 15ALIVE 16