微信公共号的PHP开发（基础篇）——玩一下，php基础篇_PHP教程

<span>$timestamp</span>=<span>$_GET</span>['timestamp'<span>];
</span><span>$nonce</span>=<span>$_GET</span>['nonce'<span>];
</span><span>$token</span>='weixin'<span>;
</span><span>$signature</span>=<span>$_GET</span>['signature'<span>];
</span><span>$array</span>=<span>array</span>(<span>$timestamp</span>,<span>$nonce</span>,<span>$token</span><span>);
</span><span>sort</span>(<span>$array</span><span>);
</span><span>$tmpstr</span>=<span>implode</span>('',<span>$array</span><span>);
</span><span>$tmpstr</span>=<span>sha1</span>(<span>$tmpstr</span><span>);
</span><span>if</span> (<span>$tmpstr</span>==<span>$signature</span><span>){
  </span><span>echo</span> <span>$_GET</span>['echostr'<span>];
  </span><span>exit</span><span>;
}</span>