php - Openssl_decrypt doesn't recognize the value of $_GET -

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does 1 know why when write :

$decrypted = openssl_decrypt($given_code , $method , $password);

works fine , when 

$given_code = $_get['given_code'];

the openssl_decrypt returns nothing ??? on php of course

ok found out : problem related url encoding , did urlencode value of code generated openssl_encrypt before sending other page


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