ตัวอย่าง php header json

Here’s an example of a PHP header for sending data in JSON format:

PHP

<?php
// Set the content type header to application/json
header("Content-Type: application/json; charset=UTF-8");

// Your data to be encoded in JSON format
$data = array(
  "message" => "Hello, world!",
  "data" => array(
    "name" => "John Doe",
    "age" => 30
  )
);

// Encode the data to JSON string
$json_data = json_encode($data);

// Echo the JSON data
echo $json_data;
?>

Explanation:

1. header Function: The header function is used to send HTTP headers to the browser. In this case, we’re setting the Content-Type header to application/json. This tells the browser that the following data is in JSON format.
2. charset=UTF-8: Specifying charset=UTF-8 ensures proper encoding of characters, especially if your data contains characters outside the basic ASCII range.
3. Data to Encode: The $data variable holds the information you want to send as JSON. It can be an array of key-value pairs, a single object, or any other data structure that can be encoded by json_encode.
4. json_encode Function: This function converts the PHP data structure ($data) into a JSON string.
5. echo Statement: Finally, the echo statement sends the JSON string ($json_data) to the browser.

Running the Script:

Save this code as a PHP file (e.g., json_example.php) and run it on your server. When you access the script in your browser, it should display the JSON data:

JSON

{"message":"Hello, world!","data":{"name":"John Doe","age":30}}

This demonstrates a basic example of sending JSON data from a PHP script. You can modify the data structure and logic according to your specific needs.