微信图片上传到服务器

	$pic_img=trim( $postObj->PicUrl);


	if($type=="image"){
		$pic_url=save_file_to_sever($pic_img,$fromUsername);
 }
       GetRootPath(){
		$sRealPath = realpath('./');
	
		$sSelfPath = $_SERVER['PHP_SELF'];
		$sSelfPath = substr($sSelfPath, 0, strrpos($sSelfPath, '/'));
	
		return substr($sRealPath, 0, strlen($sRealPath) - strlen($sSelfPath));
	}

	function save_file_to_sever($url,$fromid){
		$gen=GetRootPath();
		$time=time();
		$newfname =$gen."/weixin/wx_huodong/xiawucha/".$fromid.$time.'.jpg';
		$ch=curl_init();
		$timeout=5;
		curl_setopt($ch,CURLOPT_URL,$url);
		curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
		curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
		$img=curl_exec($ch);
		curl_close($ch);
		$size=strlen($img);
		//文件大小
		$fp2=@fopen($newfname,'a');
		fwrite($fp2,$img);
		fclose($fp2);
		return "http://www.xxx.com/weixin/wx_huodong/xiawucha/".$fromid.$time.'.jpg';
	}