How to Preserve POST Data During Redirection in PHP with .htaccess?

Redirecting POST Data in PHP with .htaccess

Question:

Can POST data be submitted to a fake address that redirects to an index page?

Scenario:

A website uses a .htaccess file to redirect all requests to index.php. However, when using a form with the POST method to submit data to a fake address, the POST data is lost during redirection.

Analysis:

The default .htaccess rule used in this scenario is:

RewriteRule send-mail index.php?send-mail [NC,L]

This rule correctly redirects the request to index.php, but the [L] (last) flag stops further processing and discards any POST data.

Solution:

To preserve POST data during redirection, change the [L] flag to [P] (proxy):

RewriteRule send-mail index.php?send-mail [NC,P]

Explanation:

The [P] flag acts similarly to [L] by stopping rule processing, but it also instructs the proxy module to handle the request intact, including any POST data.

Additional Notes:

• GET requests are limited in the amount of data they can transmit compared to POST requests.
• The .htaccess rule for redirecting to index.php is:

# serve files and dirs if they exist please, otherwise send to index
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule . index.php

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