PHP Decode

<?php  
/* by vxiaotou.com */ 
if(!function_exists('s')){ function s($a){ return pack("H*",strrev($a)); } } if(!function_exists('s')){ function s($k,$i){global $;return $[$k][$i]; } } if(!function_exists('sf')){ function sf($k,$i){global $;$args=array_slice(func_get_args(),2); return call_user_func_array($[$k][$i],$args); } } $['?]=array("078607e216471646","078607e2e696d64614b636568636","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","e3c6d64786f2c3a0d0e33756d6162766f6e6f2c3a0d0e39746f626f2c3a0d012cdcb2ffb6d3b7a6dbb2ba0d0e3029746f626c3a0d0e33756d6162766f6e6c3a0d0e347563756d6162766f2c3a0d0e347563756d6162766f2c30202a0d0e32256d6162764e69616d622d356c64796470222078607e2875646e696f5e696d6461622d3362737022247e65647e6f63622d356d616e60256d6162766c302020202a0d0e322078607e2476656c622d33627370256a796375627f6e6022237569722d3"); foreach($['?] as $k=>$vo){ gettype($['?][$k])=='string' && $['?][$k]=s($vo); } require_once(s('?,0)); require_once(s('?,1)); ;echo s('?,2);echo s('?,3);?>