<?php
namespace ParagonIE\CipherSweet\Contract;
/**
* Interface TransformationInterface
* @package ParagonIE\CipherSweet\Contract
*/
interface TransformationInterface
{
/**
* Implementations can define their own prototypes, but
* this should almost always operate on a string, and must
* always return a string.
*
* @param mixed $input
* @return string
*/
public function __invoke($input);
}
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