在返回 json 的同时打印脚本

Question

从文件中打印 json 编码数据时，它也会打印脚本。有什么办法可以解决问题

<?php

/*
 * Following code will get single product details
 * A product is identified by product id (pid)
 */

// array for JSON response

$response = array();

$servername = "mysql11.000webhost.com";
$username = "a1978721_test";
$password = "heavenhell1";

$dbhandle = mysql_connect($servername, $username, $password) 
  or die("Unable to connect to MySQL");


$selected = mysql_select_db("a1978721_test",$dbhandle) 
  or die("Could not select examples");

// check for post data
if (isset($_GET["pid"])) {
    $pid = $_GET['pid'];

    // get a product from products table
    $result = mysql_query("SELECT * FROM discount WHERE id = $pid");

    if (!empty($result)) {
        // check for empty result
        if (mysql_num_rows($result) > 0) {
         $student = array();
          while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {



            $student["exam_roll"] = $row["exam_roll"];
            $student["class_no"] = $row["class_no"];
            $student["block_no"] = $row["block_no"];
            $student["name"] = $row["name"];
            // success
        }
            $response["success"] = 1;

            // user node

            $response["student"] = array();

            array_push($response["student"], $student);

            // echoing JSON response


        } else {
            // no product found
            $response["success"] = 0;
            $response["message"] = "No student found";

            // echo no users JSON


        }
    } else {
        // no product found
        $response["success"] = 0;
        $response["message"] = "No student found";

        // echo no users JSON


    }
} else {
    // required field is missing

    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    // echoing JSON response


}

 header('Content-Type: application/json');
 echo json_encode($response);
?>

它的输出是这样的，这正是我不想要的。我需要从输出中删除脚本部分。任何帮助将不胜感激:)

{"success":1,"student":[{"exam_roll":"1212","class_no":"121","block_no":"1221","name":"rohit"}]}    
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Answer 1

问题

您的托管服务提供商正在向您发回的响应正文中注入广告。有两种方法可以解决此问题。第一个是你从每个响应中删除它（只需在你的 Javascript 解析它时删除前 n 行），或者你可以找到一种方法来解决系统实现的方式。

从 Javascript 中删除它

我假设您正在接收 Javascript 中的响应（但同样的想法也适用于任何地方）。

// break the textblock into an array of lines
var lines = jsonResponse.split('\n');
// remove one line, starting at the first position
// the removing the next 4 elements.
lines.splice(0,4);
// join the array back into a single string
var jsonResponse = lines.join('\n');

关闭分析

我不确定，但我猜你正在使用 000webhosts。如果你是，这里的任何方法都适合你：

Webhoster inserts a javascript which brokes my code how to remove it?

更改 .htaccess 中的附加规则

<FilesMatch "\.(php)$">
php_value auto_append_file none
</FilesMatch>

Answer 2

注释该行并检查输出

// header('Content-Type: application/json');