openssl_decrypt

 string openssl_decrypt ( string $data , string $method , string $password [, bool $raw_input = false [, string $iv = "" ]] ) 

説明

Takes a raw or base64 encoded string and decrypts it using a given method and key.
Warning: This function is currently not documented; only its argument list is available.

戻り値

The decrypted string on success or FALSE on failure.