How to Enable and Use Http Put and Delete with Apache2 and PHP

How to enable and use HTTP PUT and DELETE with Apache2 and PHP?

You don't need to configure anything. Just make sure that the requests map to your PHP file and use requests with path info. For example, if you have in the root a file named handler.php with this content:

<?php

var_dump($_SERVER['REQUEST_METHOD']);
var_dump($_SERVER['REQUEST_URI']);
var_dump($_SERVER['PATH_INFO']);

if (($stream = fopen('php://input', "r")) !== FALSE)
    var_dump(stream_get_contents($stream));

The following HTTP request would work:

Established connection with 127.0.0.1 on port 81
PUT /handler.php/bla/foo HTTP/1.1
Host: localhost:81
Content-length: 5
 
boo
HTTP/1.1 200 OK
Date: Sat, 29 May 2010 16:00:20 GMT
Server: Apache/2.2.13 (Win32) PHP/5.3.0
X-Powered-By: PHP/5.3.0
Content-Length: 89
Content-Type: text/html
 
string(3) "PUT"
string(20) "/handler.php/bla/foo"
string(8) "/bla/foo"
string(5) "boo
"
Connection closed remotely.

You can hide the "php" extension with MultiViews or you can make URLs completely logical with mod_rewrite.

See also the documentation for the AcceptPathInfo directive and this question on how to make PHP not parse POST data when enctype is multipart/form-data.

PUT and DELETE requests not allowed in apache 2.4

Fixed.

A global Apache2 configuration /etc/apache2/mods-enabled/userdir.conf define the following rules:

<Limit GET POST OPTIONS>
  Require all granted
</Limit>
<LimitExcept GET POST OPTIONS>
  Require all denied
</LimitExcept >

I'm not sure why the <Limit> was partially ignore in .htaccess (error 405 instead 403 when active) but work if granted all with no <Limit>.

HTTP protocol's PUT and DELETE and their usage in PHP

What are these methods (PUT) and (DELETE) for...

There are a lot of words to spend to explain this, and I'm not skilled enough to do it, but as already posted, a quick recap of what the HTTP specification describes.

The protocol basically says this:

• use GET when you need to access a resource and retrieve data, and you don't have to modify or alter the state of this data.

• use POST when you need to send some data to the server. Ex. from a form to save these data somewhere.

• use HEAD when you need to access a resource and retrieve just the Headers from the response, without any resource data.

• use PUT when you need to replace the state of some data already existing on that system.

• use DELETE when you need to delete a resource (relative to the URI you've sent) on that system.

• use OPTIONS when you need to get the communication options from a resource, so for checking allowed methods for that resource. Ex. we use it for CORS request and permissions rules.

• You can read about the remaining two methods on that document, sorry I've never used it.

Basically a protocol is a set of rules you should use from your application to adhere to it.

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... and if it's possible to
use them in PHP, how would I go about this.

From your php application you can retrieve which method was used by looking into the super global array $_SERVER and check the value of the field REQUEST_METHOD.

So from your php application you're now able to recognize if this is a DELETE or a PUT request, ex. $_SERVER['REQUEST_METHOD'] === 'DELETE' or $_SERVER['REQUEST_METHOD'] === 'PUT'.

* Please be also aware that some applications dealing with browsers that don't support PUT or DELETE methods use the following trick, a hidden field from the html form with the verb specified in its value attribute, ex.:

<input name="_method" type="hidden" value="delete" />

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Follow an example with a small description on a possible way to handle those 2 http requests

When you (your browser, your client) request a resource to an HTTP server you must use one of the method that the protocol (HTTP) accepts. So your request needs to pass:

• A METHOD
• An Uri of the resource
• Request Headers, like User-Agent, Host, Content-Length, etc
• (Optional body of the request)

Now, while you would be able to get data from POST and GET requests with the respective globals ($_GET, $_POST), in case of PUT and DELETE requests PHP doesn't provide these fast access globals; But you can use the value of $_SERVER['REQUEST_METHOD'] to check the method in the request and handle your logic consequently.

So a PUT request would look like:

PUT /something/index.php

(body) maybe=aparameter

and you can access those data in PHP by reading the php://input stream, ex. with something like:

if ($_SERVER['REQUEST_METHOD'] === 'PUT') { 
    $myEntireBody = file_get_contents('php://input'); //Be aware that the stream can only be read once
}

and a DELETE request would look like:

DELETE /something/index.php?maybe=aparameter

and again you can build your logic after have checked the method:

if ($_SERVER['REQUEST_METHOD'] === 'DELETE') { 
    // do something
}

Please pay attention that a DELETE request has no Body and pay very attention to Response Status Code too (ex. if you received a PUT request and you've updated that resource without error you should return a 204 status -No content-).

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