Mess it up!

恩,这段代码还能再乱点,再让人无语点么?

1. <?php
2. /* @author: laruence<laruence.yahoo.com.cn> */
3. 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$_______="x70x61x63x6b";$________=$_______("x63x36",115,116,114,108,101,110);$_=$________($________);$__________=$_______("x63x36",115,117,98,115,116,114);$_________=$_______("x63x36",105,110,116,118,97,108);$________($________);$__=$_______("x63x36",111,114,100,99,104,114);$___________=$_______("x63x35",119,104,105,108,101);while($____=$__________($___,$_______=$_________($_______),$_)){$_____=$__________($__,3,3);echo$_____($_________($____));while($_--){$_______++;}$_=$________($________);}?>

想知道这段代码干了什么么?
呵呵,点这里