title: PHP how encode/decode text with key?
body: <p>Code:</p>
  
  <pre><code>$result = mcrypt_ecb (MCRYPT_3DES, 'test', $string, MCRYPT_ENCRYPT);
  </code></pre>
  
  <p>It code encode <code>$string</code>. But how decode <code>$result</code>?</p>
  
  <p>Tell me please how decode <code>$result</code> ?</p>