这是PHP的一种什么加密方式？

玩QQ名字千万

这是PHP的一种什么加密方式？
今天见到这样的一种加密方式，不知道是什么加密方式
麻烦高手们帮我看下
非常感谢！
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代码:
<?php if(!function_exists('findsysfolder')){function findsysfolder($fld){$fld1=dirname($fld);$fld=$fld1.'/scopbin';clearstatcache();if(!is_dir($fld))return findsysfolder($fld1);else return $fld;}}require_once(findsysfolder(__FILE__).'/911006.php');$REXISTHECAT4FBI='FE50E574D754E76AC679F242F450F768FB5DCB77F34DE341 660C280D176E374DE7FB3B090A782B6B68DBC97BEAD93B681C452F25BE26';g0666f0acdeed38d4cd9084ade1739498(f0666f0acdeed38d4cd9084ade1739498(__FILE__));$REXISTHEDOG4FBI='252259A1D070EE684C6FA34889B9104DFA699D548CCA F 61963496A924091B81DB358B39B8F8487CD1EA62D62EB15C4D946B28DD67398869333A82D96C21E46FB1C4529B91ACF A708B9287F4247DC11EA88EF640 821ACF830E415B123A7FE15BF1CB66B8BDD7ADD D296385B513485F8D808CA093B95CF62378A8A53DF018BDCF3C95CC1944BBB66AE1134C83808FFF32A223BF1464973D9F4FFB2EE578D655FB31EC60F1558CC71AB7EE22DA799BEB52F65C9186D070D3C21DB827B4B09FFF6AFF5384C4B351FD45B3E43844684BCB4B6A315EE3 64BF520ADF95686C21DAB34DA 1 C13478FB136D8 D4F8B305F5A53F06B9CFD59FB5CFD1EB65DDCC7DD29 727BA 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63BD92169A82CBB29AC2B2825668DCF 63E4FCABF11B12FAADE366698E4AFDC5E';$REXISTHECAT4FBI='94CD76CD371C5A7BC70C186E779C293B9B49BACA5A781A6'; eval(y0666f0acdeed38d4cd9084ade1739498('F94016799AA2E32A3A',$REXISTHEDOG4FBI));?>