How to write an array returned by the php interface

In PHP, the interface that returns an array can be implemented through the following steps:

1. Define an array and fill it with data.

$response = array(
    'status' => 200,
    'message' => '请求成功',
    'data' => array(
        'username' => 'tom',
        'age' => 25,
        'email' => 'tom@example.com'
    )
);

2. Use the json_encode() function to convert the array into a JSON format string.

$json = json_encode($response);

3. Set the response header to let the client know that JSON data is returned.

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

4. Output JSON data.

echo $json;

The complete code is as follows:

$response = array(
    'status' => 200,
    'message' => '请求成功',
    'data' => array(
        'username' => 'tom',
        'age' => 25,
        'email' => 'tom@example.com'
    )
);

$json = json_encode($response);

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

When the client requests this interface, it will receive a JSON format string containing the above data. Clients can use methods to parse JSON data into objects or arrays in order to use the data therein.

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