w
well@well:/var/tmp$ cat my-errors.log You messed up!You messed up!well@well:/var/tmp$ cat /home/etc/project/w.php <?php error_log("You messed up!", 3, "/var/tmp/my-errors.log"); well@well:/var/tmp$
原文：http://www.cnblogs.com/yuanjiangw/p/6824456.html