Question

我有一个项目，必须发送带有考试名称和从列表中选择的问题数量的考试数据：

我必须通过AJAX将JSON发送到我的make_exam.php文件
questions.php文件通过CURL将数据发送到backend.php
上面是我必须遵循的项目体系结构

为了进行测试，backend.php只是发送它收到的JSON。但看起来它什么也没收到。

var audit_json = {“操作”：“考试创建”，“考试名称”：“测试- 1“，” questions [2,5,9]}

var str_json = "exam="+(JSON.stringify(exam_json));

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {

         console.log(this.responseText);

    }
};

xhttp.open("POST", "functions.php", true);
xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send(str_json);

make_test.php中的CURL：

<?php


        $json = $_POST["exam"];
        $exam_json = json_encode($json);
        //if I echo $exam_json, it will display correctly meaning I am getting data here
        $ch = curl_init();

        $curlConfig = array(
            CURLOPT_URL =>"backend.php",
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => 1,
            CURLOPT_POSTFIELDS     => $exam_json,
            CURLOPT_HTTPHEADER     => array( 
                                    'Content-Type: application/json', 
                                    'Content-Length: ' . strlen($exam_json)),
        );
        curl_setopt_array($ch, $curlConfig);
        $result_back = curl_exec($ch);
        echo $result_back;

?>

backend.php接收通过CURL从make_exam.php发送的数据：

<?php

    $data_test = json_decode(file_get_contents('php://input'), true);

    echo $data_test;
    //the echo is always empty
?>

Answer 1

方法1：

对于HTTP正文中的json发布，您必须使用stipslash

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => $url ,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "{\n\t\"a\":1,\n\t\"b\":5\n}",
  CURLOPT_HTTPHEADER => array(
    "Cache-Control: no-cache",
    "Content-Type: application/json"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

方法2：

post JSON array using curl

方法3：

使用Guzzle

use GuzzleHttp\Client;

$client = new Client();

$response = $client->post('url', [
    GuzzleHttp\RequestOptions::JSON => ['foo' => 'bar']
]);

PHP文件未通过CURL接收JSON

1 个答案: