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Does $_SERVER['HTTP_X_REQUESTED_WITH'] exist in PHP or not?


Does $_SERVER['HTTP_X_REQUESTED_WITH'] exist in PHP or not?

By : CopyCat
Date : November 22 2020, 07:01 PM
it should still fix some issue The variables in $_SERVER are not really part of PHP, which is why you won't find them in the PHP documentation. They are prepared by the Web server which passes them on to the scripting language.
As far as I know, the X-Requested-With is sent by the Ajax functions of most major Frameworks but not all (Dojo, for example, added it only two years ago: #5801). As such, and taking into considerations @bobince' comments, it's safe to say it's not generally a 100% reliable method to determine whether a request is an AJAX request or not.
code :


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Do all browsers support PHP's $_SERVER['HTTP_X_REQUESTED_WITH']?

Do all browsers support PHP's $_SERVER['HTTP_X_REQUESTED_WITH']?


By : Jeremy
Date : March 29 2020, 07:55 AM
it fixes the issue Sending of a X-Requested-With header really depends on the Ajax library used. I checked out Prototype, jQuery, Mootools and YUI and they all set it.
Why use strtolower to verify $_SERVER['HTTP_X_REQUESTED_WITH']?

Why use strtolower to verify $_SERVER['HTTP_X_REQUESTED_WITH']?


By : dannyt
Date : March 29 2020, 07:55 AM
Hope that helps HTTP headers in the request are always included by the client. A client can be a shell script, a browser or an Ajax call fired by Javascript or a Javascript framework. The "j" in Ajax stands for Javascript, but the HTTP request of thus can be created with any other script or program.
From Common non-standard request headers:
code :
X-Requested-With: MySuperCURLScript
X-MyOwnHeader: Cool!
Detecting AJAX request $_SERVER['HTTP_X_REQUESTED_WITH'] is UNDEFINED

Detecting AJAX request $_SERVER['HTTP_X_REQUESTED_WITH'] is UNDEFINED


By : Олег Осыка
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , The header name should be X-Requested-With.
PHP just turns it to ALL CAPS, replaces - with _ and prefixes it with HTTP_ when it expresses it in $_SERVER.
$_SERVER['HTTP_X_REQUESTED_WITH'] seemingly not available on PHP 5.1.6

$_SERVER['HTTP_X_REQUESTED_WITH'] seemingly not available on PHP 5.1.6


By : user3863878
Date : March 29 2020, 07:55 AM
Any of those help Since php is installed as an apache module you can use apache_request_headers() for debugging purposes.
Does the header show up in debuglog.txt when you add
$_SERVER['REQUEST_METHOD'] does not exist

$_SERVER['REQUEST_METHOD'] does not exist


By : Luis Murillo
Date : March 29 2020, 07:55 AM
will be helpful for those in need Most $_SERVER directives are set by the web server. If you are using WAMP that would be Apache. You can check your apache config to find out why this value isn't set.
It's better to test for the existence of values before trying to use them.
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