Response

An HTTP response consists of a header and optional body, header contains metadata about body and body contains the actual data.

String Response

Let’s send a text format response.

$app->get('/', function($req, $res) {
    $res->send('Hello, World!');
});

Json Response

Let’s send a json response.

$app->get('/', function($req, $res) {
    $res->json([
        'status' => 'Ok',
    ]);
});

Set Http Status Code

Let’s set http status code to the response.

$app->get('/', function($req, $res) {
    $res->send('Hello, World!', 200);
});

$app->get('/', function($req, $res) {
    $res->status(200)->send('Hello, World!');
});

$app->get('/', function($req, $res) {
    // Send only http status code
    $res->sendStatus(200);
});

Set Header

Let’s set http header to the response.

$app->get('/', function($req, $res) {
    $res->header('Content-Type', 'text/html')->send('Hello, World!');
});

$app->get('/', function($req, $res) {
    $res->header([
        'Content-Type' => 'text/html'
    ])->send('Hello, World!');
});

$app->get('/', function($req, $res) {
    $res->header('Content-Type', 'text/html');
    $res->send('Hello, World!');
});

Remove Header

Let’s remove http header from the response.

$app->get('/', function($req, $res) {
    $res->removeHeader('Content-Type')->send('Hello, World!');
});

$app->get('/', function($req, $res) {
    $res->removeHeader([
        'Content-Type',
    ])->send('Hello, World!');
});

$app->get('/', function($req, $res) {
    $res->removeHeader('Content-Type');
    $res->send('Hello, World!');
});

File Response

Let’s send file as a response.

$app->get('/', function($req, $res) {
    $res->file('path/to/cat-image.png');
});

$app->get('/', function($req, $res) {
    // Set file mime type
    $res->file('path/to/cat-image.png', 'image/png');
});

Download File

Let’s download file from response.

$app->get('/', function($req, $res) {
    $res->download('path/to/cat-image.png');
});

$app->get('/', function($req, $res) {
    // Set custom file name
    $res->download('path/to/cat-image.png', 'not-cat-image.png');
});

Redirect

Let’s redirect to another url.

$app->get('/', function($req, $res) {
    $res->redirect('http://example.com');
});

$app->get('/', function($req, $res) {
    $res->redirect('http://example.com', 302);
});