How to use post method in php curl

php curl uses the post method: first start a CURL session; then check the source of the authentication certificate; then check whether the SSL encryption algorithm exists from the certificate; and finally request the https protocol interface in POST mode.

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

How to use the post method with php curl?

PHP: CURL requests the HTTPS/http protocol interface api in GET and POST modes respectively

• curl requests the https protocol interface in GET mode

  function curl_get_https($url){
        $curl = curl_init(); // 启动一个CURL会话
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2); // 从证书中检查SSL加密算法是否存在
        $tmpInfo = curl_exec($curl); //返回api的json对象
        //关闭URL请求
        curl_close($curl);
        return $tmpInfo;    //返回json对象
    }

• curl requests https protocol interface in POST method

    function curl_post_https($url,$data){ // 模拟提交数据函数
        $curl = curl_init(); // 启动一个CURL会话
        curl_setopt($curl, CURLOPT_URL, $url); // 要访问的地址
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);              // 对认证证书来源的检查
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);              // 从证书中检查SSL加密算法是否存在
        curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // 模拟用户使用的浏览器
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
        curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
        curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Post提交的数据包
        curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环
        curl_setopt($curl, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回
        $tmpInfo = curl_exec($curl); // 执行操作
        if (curl_errno($curl)) {
            echo 'Errno'.curl_error($curl);//捕抓异常
        }
        curl_close($curl); // 关闭CURL会话
        return $tmpInfo; // 返回数据，json格式
    }

• general encapsulation Interface

/**
* CURL GET || post请求
* @desc: GET与post都通用
* @author: Sindsun
* @email: 2361313833@qq.com
* @date: 2019年4月24日上午10:54:31
* @param: $url 请求的地址
*       $isPostRequest 默认true是GET请求，否则是POST请求
*       $data array  请求的参数
*       $certParam  array  ['cert_path']    ['key_path']
* @return:
*/
function curl_http($url, $isPostRequest=false, $data=[], $header=[], $certParam=[]){ // 模拟提交数据函数
    $curlObj = curl_init(); // 启动一个CURL会话
    //如果是POST请求
    if( $isPostRequest ){
        curl_setopt($curlObj, CURLOPT_POST, 1); // 发送一个常规的Post请求
        curl_setopt($curlObj, CURLOPT_POSTFIELDS, http_build_query($data)); // Post提交的数据包
    }else{  //get请求检查是否拼接了参数，如果没有，检查$data是否有参数，有参数就进行拼接操作
        $getParamStr = '';
        if(!empty($data) && is_array($data)){
            $tmpArr = [];
            foreach ($data as $k=>$v){
                $tmpArr[] = $k . '=' . $v;
            }
            $getParamStr = implode('&', $tmpArr);
        }
        //检查链接中是否有参数
        $url .= strpos($url, '?') !== false ? '&' . $getParamStr : '?' . $getParamStr;
    }
    curl_setopt($curlObj, CURLOPT_URL, $url); // 要访问的地址
    //检查链接是否https请求
    if(strpos($url, 'https') !== false){
        //设置证书
        if( !empty($certParam) && isset($certParam['cert_path']) && isset($certParam['key_path']) ){
            curl_setopt($curlObj, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查
            curl_setopt($curlObj, CURLOPT_SSL_VERIFYHOST, 2); // 从证书中检查SSL加密算法是否存在
            //设置证书
            //使用证书：cert 与 key 分别属于两个.pem文件
            curl_setopt($curlObj, CURLOPT_SSLCERTTYPE,'PEM');
            curl_setopt($curlObj, CURLOPT_SSLCERT, $certParam['cert_path']);
            curl_setopt($curlObj, CURLOPT_SSLKEYTYPE,'PEM');
            curl_setopt($curlObj, CURLOPT_SSLKEY, $certParam['key_path']);
        }else{
            curl_setopt($curlObj, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查
            curl_setopt($curlObj, CURLOPT_SSL_VERIFYHOST, 0); // 从证书中检查SSL加密算法是否存在
        }
    }
    // 模拟用户使用的浏览器
    if(isset($_SERVER['HTTP_USER_AGENT'])){
        curl_setopt($curlObj, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    }
    curl_setopt($curlObj, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
    curl_setopt($curlObj, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
    curl_setopt($curlObj, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环
    curl_setopt($curlObj, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
    curl_setopt($curlObj, CURLOPT_HTTPHEADER, $header);   //设置头部
    curl_setopt($curlObj, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回
    $result = curl_exec($curlObj); // 执行操作
    if ( curl_errno($curlObj) ) {
        $result = 'error: '.curl_error($curlObj);//捕抓异常
    }
    curl_close($curlObj); // 关闭CURL会话
    return $result; // 返回数据，json格式
}

Description: The premise is to turn on the curl switch of php and the ssl_module of the server, otherwise it cannot be used normally.

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