Clean URL from custom $_GET variables in wordpress - php

Question

I'm using wordpress pretty permalinks, my .htaccess file looks like this:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /nafham/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /nafham/index.php [L]
</IfModule>
# END WordPress
I'm using a form that displays the index page with url variables, like this:
http://www.nafham.com/?edu_year_selectionreal=79&semester_selectionreal=15&subject_selectionreal=80
I'd like to have the url to be displayed like this:
http://www.nafham.com/79/15/80
Is it possible to do so? and what's the best way of doing this in order not to make things go wrong with the rewrite conditions wordpress is Already applying?

Answer 1

as you have the rewrite already setup all you need to do is parse the url in your index.php
if (preg_match("#(\d+)/(\d+)/(\d+)#", $_SERVER['REQUEST_URI'], $regs)) {
$edu_year_selection_real = $regs[1]
$semester_selectionreal = $regs[2];
$subject_selectionreal = $regs[3];
}

Answer 2

add smth. like this to .htaccess:
RewriteRule ^/([0-9-]+)/([0-9-]+)/([0-9-]+)$ index.php?var1=$1&var2=($2)&var3=($3) [L]

Answer 3

At you need to set custom rewrite rules in the Wordpress otherwise Wordpress throw you to error page.
Here's example to set custom rewrite rules:
<?php
add_filter('rewrite_rules_array', 'insert_custom_rules');
function insert_custom_rules($rules)
{
$newrules = array();
$newrules['(.+?)/(.+?)/(.+?)/?$'] =
'index.php?edu_year_selectionreal=$matches[1]&semester_selectionreal=$matches[2]&subject_selectionreal=$matches[3]';
return $newrules + $rules;
}
?>
Hope this will help.