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微信公众平台上传临时图片素材

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1[代码][php]

//上传临时素材  返回media_id
function j_curl_upload($file='/images/2.jpg',$access_token){
    $url="https://api.weixin.qq.com/cgi-bin/media/upload?access_token={$access_token}&type=image";
    $ch1 = curl_init();
    $timeout = 5;
    $real_path=$_SERVER['DOCUMENT_ROOT'].$file;
    $file_info=array(
        'filename'=>$file,  //国片相对于网站根目录的路径
        'content-type'=>'image/jpeg',  //文件类型
        'filelength'=>filesize($real_path)         //图文大小
    );
    $data= array("media"=>"@{$real_path}",'form-data'=>$file_info);
    curl_setopt ( $ch1, CURLOPT_URL, $url );
    curl_setopt ( $ch1, CURLOPT_POST, 1 );
    curl_setopt ( $ch1, CURLOPT_RETURNTRANSFER, 1 );
    curl_setopt ( $ch1, CURLOPT_CONNECTTIMEOUT, $timeout);
    curl_setopt ( $ch1, CURLOPT_SSL_VERIFYPEER, FALSE );
    curl_setopt ( $ch1, CURLOPT_SSL_VERIFYHOST, false );
    curl_setopt ( $ch1, CURLOPT_POSTFIELDS, $data );
    $result = curl_exec ( $ch1 );
    curl_close ( $ch1 );
    if(curl_errno()==0){
        $result=json_decode($result,true);
        //var_dump($result);
        return $result['media_id'];
    }
    else {
        return false;
    }
}