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php(5.3.29nts)使用curl以formdata上传文件

发布时间：2020-06-21 09:40:02编辑：雪饮阅读（）

Php的curl语法在php中自我感觉只是比正则稍微优雅些，而这次介绍的则是更加不优雅的语法，虽然不优雅但在某些时候实用性很强。

一般我们用curl就是传递一些少量数据，而在某些情况或许还会用到文件上传，没错，我们的php此时作为客户端我们要上传文件给另外一个接口。如

    public function buildMultiPartRequest($ch, $boundary, $fields, $files,$token)
    {
        $delimiter = '-------------' . $boundary;
        $data = '';

        foreach ($fields as $name => $content) {
            $data .= "--" . $delimiter . "\r\n"
                . 'Content-Disposition: form-data; name="' . $name . "\"\r\n\r\n"
                . $content . "\r\n";
        }

//modify it
        foreach ($files as $key => $val) {
            $data .= "--" . $delimiter . "\r\n"
                . 'Content-Disposition: form-data; name="' . $val["name"] . '"; filename="' . $val['fileName'] . '"' . "\r\n\r\n"
                . $val['fileContent'] . "\r\n";
        }

        $data .= "--" . $delimiter . "--\r\n";

        curl_setopt_array($ch, array(
            CURLOPT_POST => TRUE,
            CURLOPT_HTTPHEADER => array_merge(array(
                'Content-Type: multipart/form-data; boundary=' . $delimiter,
                'Content-Length: ' . strlen($data),
                'accept:application/json',
                'Authorization:Bearer '.$token
            )),
            CURLOPT_POSTFIELDS => $data
        ));

        return $ch;
    }
    public function postFormData($url,$postData,$files,$token){
        $ch = curl_init($url);
        $ch = $this->buildMultiPartRequest($ch, uniqid(),$postData,$files,$token );//modify it, here
        curl_setopt($ch, CURLOPT_FAILONERROR, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLINFO_HEADER_OUT, TRUE);
        if(substr($url, 0, 5) == 'https') {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    //SSL 报错时使用
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    //SSL 报错时使用
        }
        try {
            $content = curl_exec($ch); //执行并存储结果
            $a=curl_getinfo($ch);
            $this->_log($a,0);
        } catch (\Exception $e) {
            $this->_log($e->getMessage(),1);
        }
        $curlError = curl_error($ch);
        if(!empty($curlError)) {
            $this->_log($curlError,1);
        }
        curl_close($ch);
        return $content;
    }
    public function sendMessageToGroup(){
        $message=array();
        if(isset($_POST["Message"])){
            $message["Message"]=$_POST["Message"];
        }
        $Attachments=array();
        if(isset($_POST["Attachments"])){
            foreach($_POST["Attachments"] as $key=>$val){
                $fullFilePath=$_SERVER["DOCUMENT_ROOT"]."/attachs/cache/".$val;
                $tmp=array("name"=>"Attachments","fileName"=>$val,"fileContent"=>file_get_contents($fullFilePath));
                array_push($Attachments,$tmp);
            }

        }

        $response=$this->postFormData($this->apiUrl."/Group/".$_POST["groupId"]."/Messages",$message,$Attachments,$_POST["AccessToken"]);

        if(empty($response)){
            $this->msgbox->add($this->curlError,1)->json();
        }
        if(isset($_POST["Attachments"])){
            $fullFilePath=$_SERVER["DOCUMENT_ROOT"]."/attachs/cache/".$val;
            @unlink($fullFilePath);
        }

        $this->msgbox->json($this->letsgoContent($response));
    }