Encryption key</td></tr>
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  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>string|false</dd></dl>
<dl class="section since"><dt>Since</dt><dd>1.0.0 </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af1eb8d9f700228211626510af3edf6dd">&#9670;&nbsp;</a></span>xxtea_encrypt()</h2>

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          <td class="memname">xxtea_encrypt <