public function decrypt($encrypted, $appid)
{
try {
//使用BASE64对需要解密的字符串进行解码
$ciphertext_dec = base64_decode($encrypted);
$module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv = substr($this->key, 0, 16);
mcrypt_generic_init($module, $this->key, $iv);
//解密
$decrypted = mdecrypt_generic($module, $ciphertext_dec);
mcrypt_generic_deinit($module);
mcrypt_module_close($module);
} catch (\Exception $e) {
@error_log('Decrypt AES Error: ' . $e->getMessage(), 0);
return FALSE;
}
try {
//去除补位字符
$pkc_encoder = new Pkcs7Encoder();
$result = $pkc_encoder->decode($decrypted);
//去除16位随机字符串,网络字节序和AppId
if (strlen($result) < 16) {
return "";
}
$content = substr($result, 16, strlen($result));
$len_list = unpack("N", substr($content, 0, 4));
$xml_len = $len_list[1];
$xml_content = substr($content, 4, $xml_len);
$from_appid = substr($content, $xml_len + 4);
} catch (\Exception $e) {
@error_log('Illegal Buffer: ' . $e->getMessage(), 0);
return FALSE;
}
if ($from_appid != $appid) {
@error_log('Validate Appid Error', 0);
return FALSE;
}
return $xml_content;
} * 'media_id' => 'rVT43tfDwjh4p1BV2gJ5D7Zl2BswChO5L_llmlphLaTPytcGcguBAEJ1qK4cg4r_'
* ));
* ```
*/
/**
* 3 回复语音消息
*
* Examples:
* ```
* $wechat->reply(array(
* 'type' => 'voice',
* 'media_id' => 'rVT43tfDwjh4p1BV2gJ5D7Zl2BswChO5L_llmlphLaTPytcGcguBAEJ1qK4cg4r_'
* ));
* ```
*/
case 'voice':
$xml = sprintf('<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[voice]]></MsgType>
<Voice>
<MediaId><![CDATA[%s]]></MediaId>
</Voice>
</xml>', $this->message->FromUserName, $this->message->ToUserName, time(), $msg['media_id']);
break;
/**
* 4 回复视频消息
*
* Examples:
* ```
* $wechat->reply(array(
* 'type' => 'video',
* 'media_id' => 'yV0l71NL0wtpRA8OMX0-dBRQsMVyt3fspPUzurIS3psi6eWOrb_WlEeO39jasoZ8',
* 'title' => '视频消息的标题', //可选
* 'description' => '视频消息的描述' //可选
* ));
* ```
*/
/**
* 4 回复视频消息
*
* Examples:
* ```
* $wechat->reply(array(
* 'type' => 'video',
* 'media_id' => 'yV0l71NL0wtpRA8OMX0-dBRQsMVyt3fspPUzurIS3psi6eWOrb_WlEeO39jasoZ8',
