Question

请教用Curl 在php 里面模拟表单提交 文本+文件的写法

Answer 1

    public 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, $this->readTimeout);
        }
        if ($this->connectTimeout) {
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $this->connectTimeout);
        }
        //https 请求
        if(strlen($url) > 5 && strtolower(substr($url,0,5)) == "https" ) {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        }

        if (is_array($postFields) && 0 < count($postFields))
        {
            $postBodyString = "";
            $postMultipart = false;
            foreach ($postFields as $k => $v)
            {
                if("@" != substr($v, 0, 1))//判断是不是文件上传
                {
                    $postBodyString .= "$k=" . urlencode($v) . "&"; 
                }
                else//文件上传用multipart/form-data，否则用www-form-urlencoded
                {
                    $postMultipart = true;
                }
            }
            unset($k, $v);
            curl_setopt($ch, CURLOPT_POST, true);
            if ($postMultipart)
            {
                foreach ($postFields as $k => $v){
                    if ("@" == substr($v, 0, 1)){
                        $tempffile = preg_replace ('/^\@/' ,'' ,$v);
                        $advfield[$k] = new CURLFile($tempffile);
                    }else {
                        $advfield[$k] = $v;
                    }
                }
                
                curl_setopt($ch, CURLOPT_POSTFIELDS, $advfield);
                unset($k, $v, $advfield);
                //curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields); //田村改
                //curl_setopt($ch, CURLOPT_POSTFIELDS, ['file' => new CURLFile(realpath('image.png'))]); 
            }
            else
            {
                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;
    }

表单列表是 $postFields  传入参数

数组，如果有文件 ，就在数组的值 前面加@ 

已经做好的 集成类 的实现 其他类字段和方法没给出，写不下了。

但是大致的实现过程应该可以看懂了