HTTP HEAD request

#1

Hello everyone! I’m trying to handle the HTTP request HEAD using SLIM and it doesn’t seems to work like other methods. I can’t have $app->head like I would with GET, POST, PUT or DELETE.

What is the the (best) way to achieve this?

Thanks!

#2

There is indeed no App::head method.

You can use App::map to create a route for requests using the HEAD method:

$app->map(['HEAD'], '/test-head', function(Request $request, Response $response) {
    return $response->withHeader('X-Test', 'head');
});

Using App::any will actually not work, as it will only match the methods GET, POST, PUT, PATCH, DELETE and OPTIONS.

#3

It worked! Thanks a lot!

#4

Is this still working in Slim 3 ?

I get error 500 when U use it like this.
Is there an other way to fix this?

#5

Hello Dadinos,

This is still working in Slim 3.

The error 500 message is not very descriptive, so I have to guess what the cause of the error is. You may want to look in the web server error logs for a more detailed error message or turn on the display of error details as described here: System Error Handler - Slim Framework

Perhaps you have not added the use statements to import the Request and Response classes?

Here is a more complete example to test this:

<?php

require_once __DIR__ . '/vendor/autoload.php';

use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;

$app = new \Slim\App();

$app->map(['HEAD'], '/test-head', function(Request $request, Response $response) {
    return $response->withHeader('X-Test', 'head');
});

$app->run();

This is the output I get with curl:

$ curl -I -X HEAD localhost:8080/test-head
HTTP/1.1 200 OK
Host: localhost:8080
Date: Fri, 03 Jun 2022 08:02:11 GMT
Connection: close
X-Powered-By: PHP/8.1.2
Content-Type: text/html; charset=UTF-8
X-Test: head
Content-Length: 0
#6

Thanks for your reaction llvdl,

I got all the use … and logging in place. Other Methods like GET and POST working well.

I have also set ‘displayErrorDetails’ => true and on my webserver (IIS) detailed error is selected in the error page settings.

I found out that when you have an error in your class function the error 500 is shown.
On a GET or POST the detailed errors are shown but on a HEAD not.
I this because it cannot output any content in a HEAD response and only return header information?