What should I do if php cannot receive parameters?

Solution to the problem that php cannot receive parameters: 1. Modify the sending code to "$data = array ('openid' => "123",'keyword' => "321");$ data = json_encode($data);..."; 2. Modify the receiving end code to "$obj=file_get_contents("php://input");$data=json_decode(...)".

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer

What should I do if php cannot receive parameters? ?

• curl submission parameter php cannot receive the problem

Specific problem description:

Write an interface using thinkphp.

Use curl to call the interface on the remote end. Curl is written as follows:

function curl($url,$method,$params,$auth){ //初始化CURL句柄 $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url);//设置请求的URL #curl_setopt($curl, CURLOPT_HEADER, false);// 不要http header 加快效率 curl_setopt($curl, CURLOPT_RETURNTRANSFER,1); //设为TRUE把curl_exec()结果转化为字串，而不是直接输出 //SSL验证 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求时要设置为false 不验证证书和hosts FALSE 禁止 cURL 验证对等证书（peer's certificate）, 自cURL 7.10开始默认为 TRUE。从 cURL 7.10开始默认绑定安装。 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);//检查服务器SSL证书中是否存在一个公用名(common name)。 $header[] = "Content-Type:application/json;charset=utf-8"; if(!empty($header)){ curl_setopt ( $curl, CURLOPT_HTTPHEADER, $header );//设置 HTTP 头字段的数组。格式： array('Content-type: text/plain', 'Content-length: 100') } //请求时间 $timeout = 30; curl_setopt ($curl, CURLOPT_CONNECTTIMEOUT, $timeout);//设置连接等待时间 //不同请求方法的数据提交 switch ($method){ case "GET" : curl_setopt($curl, CURLOPT_HTTPGET, true);//TRUE 时会设置 HTTP 的 method 为 GET，由于默认是 GET，所以只有 method 被修改时才需要这个选项。 break; case "POST": if(is_array($params)){ $params = json_encode($params,320); } #curl_setopt($curl, CURLOPT_POST,true);//TRUE 时会发送 POST 请求，类型为：application/x-www-form-urlencoded，是 HTML 表单提交时最常见的一种。 #curl_setopt($curl, CURLOPT_NOBODY, true);//TRUE 时将不输出 BODY 部分。同时 Mehtod 变成了 HEAD。修改为 FALSE 时不会变成 GET。 curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");//HTTP 请求时，使用自定义的 Method 来代替"GET"或"HEAD"。对 "DELETE" 或者其他更隐蔽的 HTTP 请求有用。 有效值如 "GET"，"POST"，"CONNECT"等等； //设置提交的信息 curl_setopt($curl, CURLOPT_POSTFIELDS,$params);//全部数据使用HTTP协议中的 "POST" 操作来发送。 break; case "PUT" : curl_setopt ($curl, CURLOPT_CUSTOMREQUEST, "PUT"); curl_setopt($curl, CURLOPT_POSTFIELDS,json_encode($params,320)); break; case "DELETE": curl_setopt ($curl, CURLOPT_CUSTOMREQUEST, "DELETE"); curl_setopt($curl, CURLOPT_POSTFIELDS,$params); break; } $data = curl_exec($curl);//执行预定义的CURL $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);//获取http返回值,最后一个收到的HTTP代码 curl_close($curl);//关闭cURL会话 $res = json_decode($data,true); return $res; }

I found a problem, that is, when the post is submitted, the background cannot receive the passed parameters.

Background reception:

public function getUserById(){ $custid = I("post.cust_uid"); $companyId = I("post.company_id"); $model = M('chatuser','snake_',$this->db); $mine = $model->field('username,avatar,sign,id')->where(['id'=>$custid])->find(); $company = $model->field('username,avatar,sign,id')->where(['id'=>$companyId])->find(); $return['mine'] =$mine; $return['company'] =$company; $return['status'] = 1; $this->ajaxReturn($return); }

After various debugging, it was found that

$header[] = "Content-Type:application/json;charset=utf-8";

and

if(is_array($params)){ $params = json_encode($params,320); }

in the header submitted json-type data, and using The postman test interface uses body's form-data

. Urgent, you can only comment out the above two codes first. Submit normally. When you have time, let’s take a look at the json receiving method.

If there are any classmates who know and want to leave a message to clear up any doubts, we will be grateful!

The code for the correct solution is as follows:

//发送端 $data = array ( 'openid' => "123", 'keyword' => "321" ); $data = json_encode($data); ... curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); //接受端 $obj = file_get_contents("php://input"); $data = json_decode($obj, true);

Recommended study: "PHP Video Tutorial"

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