淘宝SDK扒出来的CURL调用含文件上传代码

<?php
function curl($url,$postFields=null){
    $ch=curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_FAILONERROR,false);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
    //if($this->readTimeout){
        curl_setopt($ch,CURLOPT_TIMEOUT,300);
    //}
    //if($this->connectTimeout){
        curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,300);
    //}
    curl_setopt($ch,CURLOPT_USERAGENT,"top-sdk-php");
    //https 请求
    if(strlen($url)>5&&strtolower(substr($url,0,5))=="https"){
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
    }

    //POST
    if(is_array($postFields)&&0<count($postFields)){
        $postBodyString="";
        $postMultipart=false;
        foreach($postFields as $k=>$v){
            if(!is_string($v))
                continue ;
            //判断是不是文件上传
            if("@"!=substr($v,0,1)){
                $postBodyString.="$k=".urlencode($v)."&";
            }else{
                //文件上传用multipart/form-data，否则用www-form-urlencoded
                $postMultipart=true;
                if(class_exists('\CURLFile')){
                    $postFields[$k]=new \CURLFile(substr($v,1));
                }
            }
        }
        unset($k,$v);
        curl_setopt($ch,CURLOPT_POST,true);
        if($postMultipart){
            if(class_exists('\CURLFile')) {
                curl_setopt($ch,CURLOPT_SAFE_UPLOAD,true);
            }else{
                if(defined('CURLOPT_SAFE_UPLOAD')){
                    curl_setopt($ch,CURLOPT_SAFE_UPLOAD,false);
                }
            }
            curl_setopt($ch,CURLOPT_POSTFIELDS,$postFields);
        }else{
            $header=array("content-type:application/x-www-form-urlencoded;charset=UTF-8");
            curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
            curl_setopt($ch,CURLOPT_POSTFIELDS,substr($postBodyString,0,-1));
        }
    }
    $reponse=curl_exec($ch);
    if (curl_errno($ch)){
        throw new Exception(curl_error($ch),0);
    }else{
        $httpStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if(200!==$httpStatusCode){
            throw new Exception($reponse,$httpStatusCode);
        }
    }
    curl_close($ch);
    return $reponse;
}

function curl_with_memory_file($url, $postFields = null, $fileFields = null){
    $ch=curl_init();
    curl_setopt($ch,CURLOPT_URL, $url);
    curl_setopt($ch,CURLOPT_FAILONERROR,false);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
    //if($this->readTimeout){
        curl_setopt($ch,CURLOPT_TIMEOUT,300);
    //}
    //if($this->connectTimeout){
        curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,300);
    //}
    curl_setopt($ch,CURLOPT_USERAGENT,"top-sdk-php" );
    //https 请求
    if(strlen($url)>5&&strtolower(substr($url,0,5))=="https"){
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
    }
    //生成分隔符
    $delimiter='-------------'.uniqid();
    //先将post的普通数据生成主体字符串
    $data='';
    if($postFields!=null){
        foreach($postFields as $name=>$content) {
            $data.="--".$delimiter."\r\n";
            $data.='Content-Disposition:form-data;name="'.$name.'"';
            //multipart/form-data 不需要urlencode，参见 http:stackoverflow.com/questions/6603928/should-i-url-encode-post-data
            $data.="\r\n\r\n".$content."\r\n";
        }
        unset($name,$content);
    }

    //将上传的文件生成主体字符串
    if($fileFields!=null){
        foreach($fileFields as $name=>$file) {
            $data.="--".$delimiter."\r\n";
            $data.='Content-Disposition:form-data; name="'.$name.'";filename="'.$file['name']."\"\r\n";
            $data.='Content-Type:'.$file['type']."\r\n\r\n";//多了个文档类型
            $data.=$file['content']."\r\n";
        }
        unset($name,$file);
    }
    //主体结束的分隔符
    $data.="--".$delimiter."--";
    curl_setopt($ch,CURLOPT_POST,true);
    curl_setopt($ch,CURLOPT_HTTPHEADER,array(
            'Content-Type: multipart/form-data;boundary='.$delimiter,
            'Content-Length:'.strlen($data))
    );
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$data);

    $reponse=curl_exec($ch);
    unset($data);

    if(curl_errno($ch)){
        throw new Exception(curl_error($ch),0);
    }else{
        $httpStatusCode=curl_getinfo($ch,CURLINFO_HTTP_CODE);
        if (200!==$httpStatusCode){
            throw new Exception($reponse,$httpStatusCode);
        }
    }
    curl_close($ch);
    return $reponse;
}

print_r(curl_with_memory_file("http://localhost/aa.php",
    array("a"=>1,"b"=>2),
    array(
    array(
    "name"=>"a.png",
    "type"=>"application/x-png",
    "content"=>file_get_contents("http://pic002.cnblogs.com/images/2011/42876/2011050119000033.png")
    ),
    array(
    "name"=>"b.png",
    "type"=>"application/x-png",
    "content"=>file_get_contents("http://pic002.cnblogs.com/images/2011/42876/2011050119000033.png")
    )
    )
));
print_r(curl("http://localhost/aa.php",array("a"=>1,"b"=>2,"c"=>3,"d"=>"@d:/TB1eH7vNFXXXXcLXpXXwu0bFXXX.png")));
?>

附件：http://files.cnblogs.com/files/mengdejun/curl_fun.zip