Request the urldecode decryption method. thank you.

Request the urldecode decryption method. thank you. Please take a look at the code decryption method and use a black knife and online decryption, which has never been fruitful. please kindly advise. thank you. & Lt ;? $ O00OO0 = urldecode ("% 6E1% 7A % 62% 2F % 6D % 615% 5C % 76% 740% 6928% 2D % 70% 78% urldecode decryption method, thank you.
Please take a look at the code decryption method and use a black knife and online decryption, which has never been fruitful. please kindly advise. thank you.

 $O00OO0=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$O00O0O=$O00OO0{3}.$O00OO0{6}.$O00OO0{33}.$O00OO0{30};$O0OO00=$O00OO0{33}.$O00OO0{10}.$O00OO0{24}.$O00OO0{10}.$O00OO0{24};$OO0O00=$O0OO00{0}.$O00OO0{18}.$O00OO0{3}.$O0OO00{0}.$O0OO00{1}.$O00OO0{24};$OO0000=$O00OO0{7}.$O00OO0{13};$O00O0O.=$O00OO0{22}.$O00OO0{36}.$O00OO0{29}.$O00OO0{26}.$O00OO0{30}.$O00OO0{32}.$O00OO0{35}.$O00OO0{26}.$O00OO0{30};eval($O00O0O("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"));
 ?>

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------ Solution --------------------
It's boring. this kind of thing also needs to be disturbed.

 header("Content-type: text/html; charset=utf-8"); 
if(!file_exists('./data/install.lock'))
{
    header("Location: /install/index.php");