title: Decode base64 string - php
body: <p>Is there any way to decode this string??</p>
  
  <p>Actual string : 其他語言測試 - testing</p>
  
  <p>base64 encode while sending on mail as subject as </p>
  
  <p>"=?iso-2022-jp?B?GyRCQjZCPjhsOEBCLDtuGyhCIC0gdGVzdGluZw==?="</p>
  
  <pre><code>&lt;?php
  echo base64_decode('GyRCQjZCPjhsOEBCLDtuGyhCIC0gdGVzdGluZw==');
  ?&gt;
  </code></pre>
  
  <p>This is base 64 encode, I couldn't decode it to actual Chinese string.Since it has been encoded using "iso-2022-jp", I have also tried online base64decode.org site to decode this string, but I couldn't find the original string, how can I do that?</p>