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<?php $X = encrypt("ffffff"); echo "ffffff"; echo $X; echo decrypt($X); /** * Returns an encrypted & utf8-encoded */ function encrypt($pure_string) { $encryption_key = 'random_string_here_as_private_key'; $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $encrypted_string = mcrypt_encrypt(MCRYPT_BLOWFISH, $encryption_key, utf8_encode($pure_string), MCRYPT_MODE_ECB, $iv); return $encrypted_string; } /** * Returns decrypted original string */ function decrypt($encrypted_string) { $encryption_key = 'random_string_here_as_private_key'; $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $decrypted_string = mcrypt_decrypt(MCRYPT_BLOWFISH, $encryption_key, $encrypted_string, MCRYPT_MODE_ECB, $iv); return $decrypted_string; }