Beg UrlDecode to decrypt the way, thanks

Beg UrlDecode decryption way, thank you.
Ask the Master to know how to decrypt the code, with a black knife and online decryption, has not been the result, please enlighten, thank you.

 $O 00oo0=urldecode ("%6e1%7a%62%2f%6d%615%5c%76%740%6928%2d%70%78%75%71%79%2a6%6c%72%6b%64%679%5f%65%68%63%73%77 %6f4%2b%6637%6a "); $O 00o0o= $O 00oo0{3}. $O 00oo0{6}. $O 00oo0{33}. $O 00oo0{30}; $O 0oo00= $O 00oo0{33}. $O 00oo0{10}.$ O00OO0{24}. $O 00oo0{10}. $O 00oo0{24}; $OO 0o00= $O 0oo00{0}. $O 00oo0{18}. $O 00oo0{3}. $O 0oo00{0}. $O 0oo00{1}. $O 00oo0{24} ; $OO 0000= $O 00oo0{7}. $O 00oo0{13}; $O 00o0o.= $O 00oo0{22}. $O 00oo0{36}. $O 00oo0{29}. $O 00oo0{26}. $O 00oo0{30}. $O 00oo0{ $O 00oo0{35}. $O 00oo0{26}. $O 00oo0{30};eval ($O 00o0o (" Je8wtzawmd0iqk9dwm1luhf5bkr4qwjmr05fdw90c2pkulljcmlktxdwz0zvenzytgthvfnwswxozuhrv1ditmzhq0d5b3rzanbrtfn3wxpyymx4aerjqxzut 1vquklpdw1asmvrbktkcwdnvlhgrujhczh3tmfwtwncre1bvelurti5emhtunpotjewwepxtuhuvzbmslywztjwmffcuddnu3dyy0ppbwzkrtloskrhzutjve Nlbelzrxfxzlrjvmzhtwxmujlnwfnnbwhgvxjpbzrazlnpmgnkoxfrdhcwy0jqbgvhalpjmmx0q2rrd050bhdovhbjz05xcmzcawtmsmdyz2tqwmmyatbuqjl 6sfrwwm5cnw1ou2lsuu45cvfhre1ytjvqbkzwvenlbhdovhbjz05xtvhtttbiudbdteuwq2ztumfuqjvnq05ov3vpv0x1azlhuk5bbgdgdzbbttlvzkpxbgnc D01dtmhbsk5bbgdoqvppb1bjzlnnB1fhawjmzfzmsjbmt0tzukxkb2txq0tsd05uohlnsei2tuhydxliqkv4wfh0bezom2hvnvzmuzfxuwe0emmynhlludbdzlnsyw5cnu1dtmhxdwlxtetraxdez Efsz05ovkfgchrds2x3tlq4ewdiqjznsfh1euhyuxz6qjlnzhjac0vxa2zcznfryxvytzbprxvpouvfukrnt29qsu9vnfpjmjftafnpwmvvqxfiudbdzw9yst Vxqla1cjj6ntv6ejvrmljdvdh3tmfetwzhtxpmzel0dvlnseowrfdswwlmdvlpdwroqwxntkf6ztjevmhtwvppb2s3c0vywknuc2fubnrnbgzkdge2n01aznv 5zvawq2ztumfuqjvnq05oaujprglla0rmdvlpdwroqwxnwwlfdwk5ruvsrgdntjrjtzbsnghtunpmtjh0q0tsd05uohlnsgfpefhyoxz6bkjwk2q3ynpyuxz6 qjlnzhjac0vxa2zcznfryxvytzb3r0trzkx1wwl1ze5bbgdpv09lttlzrvjev0oxv1dswuljzvrwdgmyoxpmyu10zw9bcuhqmenlb3jjnxfcudvymno1nxp6n Veyuknuohdoyurnzmfnemzksxr1tvjiullnd0rsouvfukrnt29qsu9vnfpkm08xuxrecvfcdvppb2s3c0vywknuv2dswtfvnmyyzjvytlc1cw5gnwv6mju1en O1utjsq1q4d05uofpmu1jhbki1tunoagdswtfvsjfxv1jzsxrltldfzhu1terzaxvfujlfrvjez2donelpmlywuujqwk9vazdzrxjaq1rxwur1t1jek0i4suh Cawxvclpzrxfrzkjmcvfhdxjpmglfdwk5wur1t1jeb0fsz1nmvlfgd01ds2x3tnrptufkunfbyxvyz1q0wmmyow9mzdl1blnnem4xv2d1tjl1blnnem4xv2d1 tjvqbkzwvenlbhdostbdc0vyl0djpt0io2v2ywwojz8+ jy4ktzawtzbpkcrpme9pmdaoje9pme8wmcgktzbpmdawlcrptzawmdaqmiksje9pme8wmcgktzbpmdawlcrptzawmdasje9pmdawmcksje9pme8wmcgktzbpm Dawldasje9pmdawmckpksk7 "));
?>

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------Solution--------------------
It's so boring, this stuff has to be scrambled.

 
  
if (!file_exists ('./data/install.lock '))
{
    Header ("Location:/install/index.php");
