测试号无法自动回复消息($GLOBALS['HTTP_RAW_POST_DATA']无法获取信息)

最近开始自己捣鼓微信公众号,在用测试号验证token时没有出错,但是发送消息后并没有接收到消息.
测试号无法自动回复消息($GLOBALS['HTTP_RAW_POST_DATA']无法获取信息)
之后通过测试才知道是 , $GLOBALS['HTTP_RAW_POST_DATA']无法获取到信息:
用 file_get_contents('test.text',$xml_str) 输出数据,发现没有数据

	    $xml_str = $GLOBALS['HTTP_RAW_POST_DATA'];    // 无法获取到数据
	    //  因为很多都设置了register_globals禁止,不能用$GLOBALS["HTTP_RAW_POST_DATA"];

        $xml_str = file_get_contents('php://input');    //可以获取到数据

下面附微信验证token并实现自动回复源代码:

<?php
/**
  * wechat php test
  */

//define your token

define("TOKEN", "junior");
traceHttp(); // 打印日志
$wechatObj = new wechatCallbackapiTest();

if(isset($_GET['echostr'])) {
    $wechatObj->valid(); // 验证token
}else{
    $wechatObj->responseMsg();   // 回复消息
}


class wechatCallbackapiTest
{
	public function valid()
    {
        $echoStr = $_GET["echostr"];

        //valid signature , option
        if($this->checkSignature()){
        	echo $echoStr;
        	exit;
        }
    }

    public function responseMsg()
    {
		
        
        $postStr = file_get_contents('php://input');
		
        // $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];   //无法获取到数据
        // file_put_contents('test.txt',$postStr);
      
		if (!empty($postStr)){

                libxml_disable_entity_loader(true);
                
              	$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;

                $msgType = $postObj->MsgType;

                $keyword = trim($postObj->Content);
                $time = time();
                $textTpl = "<xml>
							<ToUserName><![CDATA[%s]]></ToUserName>
							<FromUserName><![CDATA[%s]]></FromUserName>
							<CreateTime>%s</CreateTime>
							<MsgType><![CDATA[%s]]></MsgType>
							<Content><![CDATA[%s]]></Content>
							<FuncFlag>0</FuncFlag>
							</xml>";
                
                if($msgType == 'text') {

                  	$msgType = "text";
                    $contentStr = date('Y-m-d H:i:s',time());
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    echo $resultStr;
                }else{
                    echo "Input something..";
                }

        }else {
        	echo "";
        	exit;
        }
    }
	

	private function checkSignature()
	{
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];	
        		
		$token = TOKEN;
		$tmpArr = array($token, $timestamp, $nonce);
		sort($tmpArr);
		$tmpStr = implode( $tmpArr );
		$tmpStr = sha1( $tmpStr );
		
		if( $tmpStr == $signature ){
			return true;
		}else{
			return false;
		}
	}
}


function traceHttp() {
    $content = date('Y-m-d H:i:s')."\nREMOTE_ADDR:".$_SERVER["REMOTE_ADDR"]."\nQUERY_STRING:".$_SERVER["QUERY_STRING"]."\n\n";
    if (isset($_SERVER['HTTP_APPNAME'])){   //SAE
        sae_set_display_errors(false);
        sae_debug(trim($content));
        sae_set_display_errors(true);
    }else {
        $max_size = 100000;
        $log_filename = "log.xml";
        if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
        file_put_contents($log_filename, $content, FILE_APPEND);
    }
}

?>

测试号无法自动回复消息($GLOBALS['HTTP_RAW_POST_DATA']无法获取信息)

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