All $_POST do not work with this .htaccess code in place:
RewriteEngine On
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^\ ]+)\.php
RewriteRule ^/?(.*)\.php$ /$1 [L,R=301]
// ========================== this code too is in place, but it seems not to impact on $_POST
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^/?(.*)$ /$1.php [L]
// =================================================
Any idea on why such a problem? What can I do to solve and get the same result for php extensions?