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1. www.php.net › manual › enPHP: getallheaders - Manual

   www.php.net › manual › en

   Fetches all HTTP headers from the current request. This function is an alias for apache_request_headers (). Please read the apache_request_headers () documentation for more information on how this function works.

   • Virtual

     virtual () is an Apache-specific function which is similar...

2. stackoverflow.com › questions › 541430How do I read any request header in PHP? - Stack Overflow

   stackoverflow.com › questions › 541430

   Feb 12, 2009 · How should I read any header in PHP? For example the custom header: X-Requested-With.

   • IF : you only need a single header, instead of all headers, the quickest method is:
   • $_SERVER['HTTP_X_REQUESTED_WITH']RFC3875 , 4.1.18: Meta-variables with names beginning with HTTP_ contain values read from the client request hea...
   • You should find all HTTP headers in the $_SERVER global variable prefixed with HTTP_ uppercased and with dashes (-) replaced by underscores (_). Fo...
   • Since PHP 5.4.0 you can use getallheaders function which returns all request headers as an associative array: var_dump(getallheaders());// array(...
   • Pass a header name to this function to get its value without using for loop. Returns null if header not found. /*** @var string $headerName case...
   • I was using CodeIgniter and used the code below to get it. May be useful for someone in future. $this->input->get_request_header('X-Requested-With');
   • strtolower is lacking in several of the proposed solutions, RFC2616 (HTTP/1.1) defines header fields as case-insensitive entities. The whole thing,...
   • if only one key is required to retrieved, For example "Host" address is required, then we can use apache_request_headers()['Host']So that we can...
   • To make things simple, here is how you can get just the one you want: Simple: $headerValue = $_SERVER['HTTP_X_REQUESTED_WITH'];or when you need t...

3. nabilhassen.com › php-get-request-headersGet request headers in PHP - nabilhassen.com

   nabilhassen.com › php-get-request-headers

   Nov 27, 2025 · Learn how to read HTTP request headers in PHP using $_SERVER and getallheaders with concise, practical examples for real projects and quick debugging tips.

4. www.geeksforgeeks.org › php › how-to-read-anyHow to read any request header in PHP - GeeksforGeeks

   www.geeksforgeeks.org › php › how-to-read-any

   Jul 11, 2025 · Learn how to effectively read and process any request header in PHP with step-by-step guidance and examples on GeeksforGeeks.

5. www.codegenes.net › blog › how-do-i-read-any-requestHow to Read Any Request Header in PHP: Step-by-Step Guide ...

   www.codegenes.net › blog › how-do-i-read-any-request

   Jan 16, 2026 · In this guide, we’ll demystify how to read **any** request header in PHP, including common headers like `User-Agent` and specialized ones like `X-Requested-With` (used to detect AJAX requests). We’ll cover multiple methods, provide step-by-step examples, and discuss security considerations to ensure you use headers safely.

6. www.php5.net › functionFetch all HTTP request headers

   www.php5.net › function

   Return Values An associative array of all the HTTP headers in the current request, or FALSE on failure.

7. People also ask

   What is getallheaders() function?

   • The getallheaders() function is a simpler alternative: it returns all request headers as an associative array, where keys are header names (as sent by the client) and values are the header values.

   How to Read Any Request Header in PHP: Step-by-Step Guide Includin…

   www.codegenes.net/blog/how-do-i-read-any-request-header-in-php/

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   What are headers in PHP?

   • Headers are optional but often critical for servers to process requests correctly. In PHP, accessing these headers is straightforward once you understand the tools available. PHP provides two primary ways to read request headers: The $_SERVER superglobal array, which contains server and execution environment information, including headers.

   How to Read Any Request Header in PHP: Step-by-Step Guide Includin…

   www.codegenes.net/blog/how-do-i-read-any-request-header-in-php/

   See all results for this question

   How to read request headers in PHP?

   • In PHP, accessing these headers is straightforward once you understand the tools available. PHP provides two primary ways to read request headers: The $_SERVER superglobal array, which contains server and execution environment information, including headers. The getallheaders() function, which returns all request headers as an associative array.

   How to Read Any Request Header in PHP: Step-by-Step Guide Includin…

   www.codegenes.net/blog/how-do-i-read-any-request-header-in-php/

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   What does fetch all HTTP headers do?

   • Fetches all HTTP headers from the current request. This function is an alias for apache_request_headers (). Please read the apache_request_headers () documentation for more information on how this function works. This function has no parameters. An associative array of all the HTTP headers in the current request. 7.3.0

   PHP: getallheaders - Manual

   www.php.net/manual/en/function.getallheaders.php

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8. www.tutorialspoint.com › article › how-can-i-get-phpHow can I get PHP to display the headers it received from a ...

   www.tutorialspoint.com › article › how-can-i-get-php

   PHP provides several methods to display HTTP headers received from a browser. You can access individual headers through the $_SERVER superglobal or retrieve all headers using the getallheaders () function.