PHP Obfuscation encryption solution, how to deal with

PHP Obfuscation Encryption Solution
I read the Baidu or Google did not get a good way to decrypt

So I beg you to help decipher

By the way, teach me.

  $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 (" Je8wtzawmd0izgvleexxynfbtmnhbxbjsfjru2hzrwlasm5rrnzyb3lhck11vvlpqknqvmx3rgd0vgz6ug1qemhpa0rmvhdsdm9nanljslvtwutyzw5rdgrzt Nvjcgfnckxcvkdbsfdfylpsq3fgeglpwjlichlud0frd0vsm3dnrdi1rlizy1nsuxrsekfkn1p0tupla2vnrg9mbhpbvffvtdvgdfdmuu9brzbsuvdfakfkn1 P0tu1eb3dzbwtjru4yoxjcmkxsekftseqynw9wa1jzqm9kegvvnwjwevrrenfzd0fioctadhv3quhil1j2u2jadhv3qvg4c1lqcudzn2fpwwzqd0fvrw9qqvn 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0hctndfakfumnbor2jwqwpsvlhuc08zzu1sz05kmhdud0fssm5wazvirhlxsmvxoxneb3dfakfsuvjvzhjwstkyce5hykjrsnjsdlnibklkn1p0dw5ba25jzw Tkyvzimhpbddb6qwt3u1iytgxqsjvzbxzfsgvvamxwwfrztzdvyxjwrgrobvp0wnr1bkfrrxjcmmgxzxzxrkqynuhlvvr1bjnuu0rvwxnxbzkwcgt3rvjvzhj Wstvichluuxpxwxdbbepuqlfurujrwtdadhvuwnr1bkiyzhhlvvrytdnhrujrq0vswgpsvlhuc084qxjzz0hkag1adfp0dw5ba0vyqjjomwv2v0zemjvizvvudw4zblneb1lztdnhrujrq0vsuw5trg9z Clj2u2jusuo3wnr1bkfrbklla2rhvmiwekf0mhpba3dtujjmbgpkrxjtdldrum9kwwpyvdzqqthzwvlwnhi4tmqwd1r3qwxkbnbrnuheevdkzvc5c0rvd0vqq Wxrum9kcnbjow5euwnfztnuu0r5blneb1lyunztym5jsjdadhvuqwtuswvrzgfwyjb6qxqwekfrd1nsmkxsakporw1vv1lqwfq2ake4cze5cjz4oe5kmhdud0 Fssm5wazvirhlxsmvxoxneb3dfakfsuvjvzhjwstlnzu5lrur5blneb1lyunztym5jsjdadhvuqwtuswvrzgfwyjb6qxqwekfrd1nsmkxsakp3c21or1llvwp Svlhuc084rk1iwu9kag1adfp0dw5ba0vyqjjomwv2v0zemjvizvvudw4zblneb1lzddi5mvj2aevsb2rycek1ynb5vff6cvl3qwxkbkjrbkvca1k3wnr1blp0 Dw5cmmr4zvvuwhbrdvhqwnvst0krodbdrkvouk50mfqwekf0ru1eb3dzbwtjru4yoxjcmkxsekftsujrnwfpme02um9kcnbjnwjwevrrenfzd0fssm5cuw5fq Mtzn1p0dw5adhvuqjjkegvvvfhqdmuwrdnuwgpadwxpss96mtl6ehgvcjmwuk5kmhdud0fssm5wazvirhlxsmvxoxneb3dfakfsuvjvzhjwstk0zvfjc1jbnw Jwevrrenfzd0fssm5cuw5fqmtzn1p0dw5adhvuqjjkegvvvfhwuu0wrdnuwgpadwxpss96mtl6ehn3t041uk5kmhdud0fssm5wazvirhlxsmvxoxneb3dfakf Suvjvzhjwstl6uffjc1jbnwjwevrrenfZd0fssm5cuw5fqmtzn1p0dw5adhvuqjjkegvvvfh0mlntum8wwgpadwxpss8zswd2b2hstnqwvdb6qxrfturvd1lta2nftji5ckiytgx6qw1jqms1yu8wd3vc Tm5dt1fhdvjbuk1wyjb6qxrfwfjvv1nwefl3qwxkd0fsruhctndfakfunmvrblneb1lyalp1be9jl094rhj1c2dgqxnumhpbdevnrg93ww1ry0vomjlyqjjmb Hpbbulcazvhtznnb1jvzhjwstvichluuxpxwxdbbepuqlfurujrwtdadhvuwnr1bkiyzhhlvvrythz0wgpadwxpss9km0rosghstnqwvdb6qxrfturvd1lta2 Nftji5ckiytgx6qw1jqms1yu8zr1nemmnnqms0clj2u2jusuo3wnr1bkfrbklla2rhvmiwekf0mhpba3dtujjmbgprtulcazvhalhunmpbohnylzizmvlozdb 3vhdbbepucgs1ser5v0plvzlzrg93rwpbbffsb2rycek5zlbvzelcazvht1fhdvjbuk1wyjb6qxrfwfjvv1nwefl3qwxkd0fsruhctndfakfuuurbamxwwfrz Tzdingjwrgrobvp0wnr1bkfrrxjcmmgxzxzxrkqynuhlvvr1bjnuu0rvwxnlmmhjqms1yu9rr3vsqvjnvmiwekf0rvhsb1dtchhzd0fssndbbeviqk53rwpbb Klcazvhtji1rurjamxwwfrztzdprtfhazhooho4afjoddbumhpbdevnrg93ww1ry0vomjlyqjjmbhpbbulcazvhtznhu1boblneb0ngrg9xc09rr3vsqvjnvm Iwekf0rvhsb1dtchhzd0fssndbbeviqk53rwpbbnjlazhyalp1be9jk3g1bxaxc2dgqxnntmqwd1r3qwxkbnbrnuheevdkzvc5c0rvd0vqqwxrum9kcnbjowj Ctkvgrg9xc09rr3vsqvjnvmiwekf0rvhSb1dtchhzd0fssndbbeviqk53rwpbblfemjvrztjkc04ynuveswpsvlhuc085rmjyrly1zjdib1lyby9dvdb6qxrfturvd1lta2nftji5ckiytgx6qw1jqms1 Yu8wbxneb21rqms5rnfvv3npuud1ukfstvzimhpbdevyum9xu3b4wxdbbep3qwxfsejod0vqqw5rrdi1uwuyzhnom0cwalhunmpbohnoq053zk9vyxjwcek2r cswwnr1bkfrrxjcmmgxzxzxrkqynuhlvvr1bjnuu0rvwxnjmjlyztjtu0qxowjtqtvichluuxpxwxdbbepuqlfurujrwtdadhvuwnr1bkiyzhhlvvryzti5cm Uybvnemtlicfhqbfzyvhnpn1zzc09wnwy3sg9zcm8vq1qwekf0ru1eb3dzbwtjru4yoxjcmkxsekftsujrnwfpmg1zrg9tuujrouzcmnvyunztym5jsjdadhv Uqwtuswvrzgfwyjb6qxqwekfrd1nsmkxsam9tc0rvbvfcazlgztjiwgpadwxpsss0k2d2b3jwcjq1yu9nczd0d0fssm5wazvirhlxsmvxoxneb3dfakfsuvjv Zhjwstl5rdi1uwuyzhnomm1zt1fhdvjbuk1wyjb6qxrfwfjvv1nwefl3qwxkd0fsruhctndfakfuuwuxoghqwfq2ake4c3jpsednyw9hclzwstzekzbadhvuq Wtfckiyadfldldgrdi1sgvvvhvum25trg9zc2myoxjlmm1trde4ae9rr3vsqvjnvmiwekf0rvhsb1dtchhzd0fssndbbeviqk53rwpbbnjlazlgbw9fympyvd Zqqthzci8ymzfztmqwd1r3qwxkbnbrnuheevdkzvc5c0rvd0vqqwxrum9kcnbjowtwtkdtum9kcnbjnwjwevrrenfzd0fssm5cuw5fqmtzn1p0dw5adhvuzxz Xb0jov1ltqvq2wnr1bkfrv0hwdjhsakhOcxqxbm5mzhrscutkvmmxv0djmew5bjbnu21vzhfcm25nunl0uwlyajdadhvuqwtxshb2ogxummrzzu5umhpbejnon1b1efz2oxi3t1zjczbyenfdzkjozvns mndjce5hmfzvu01sm2nzulfkckjvzehwswxdz1vkuvzimhpbdevfqjjtc2pbajhpmxdatepfdfdanfhwyjb6qxrfwfjvv1nwefl3qwwwekz0mhppedr3qww9p Si7zxzhbcgnpz4nlirpmdbpme8oje8wt08wmcgkt08wtzawkcrpme8wmdasje9pmdawmcoykswkt08wtzawkcrpme8wmdasje9pmdawmcwkt08wmdawkswkt0 8wtzawkcrpme8wmdasmcwkt08wmdawkskpkts= "));
?>

------to solve the idea----------------------
This is too easy.

 
  Session_Start ();
Define (' In_au ', true);
Include_once (' config/base.php ');
?>


 
  
Variable Merge
if (Isset ($_get [' Cao ')]) {
$pram = $_get [' Cao '];
} elseif (Isset ($_get [' pram ']) {
$pram = $_get [' pram '];
