PHP explains how to upload images to the server through WeChat

This article mainly introduces the method of PHP to implement WeChat image uploading to the server, involving related implementation techniques of PHP based on curl to operate image files. Friends in need can refer to the following

The example of this article tells the implementation of WeChat in PHP How to upload images to the server. Share it with everyone for your reference, the details are as follows:

$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';
}

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