htaccess file dont work with special character - php

Question

i have my .htaccess copied from codeigniter ,
i have a page which it should have a href
<a href="/notification/<?= rawurlencode(urlencode($tab['href']))?>">
htaccess will get the request correctly if i remove the special characters from the href
the htaccess file:
# Disable directory browsing
Options All -Indexes
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
# Redirect Trailing Slashes...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^ %1 [L,R=301]
# Rewrite "www.example.com -> example.com"
RewriteCond %{HTTPS} !=on
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
# Checks to see if the user is attempting to access a valid file,
# such as an image or css document, if this isn't true it sends the
# request to the front controller, index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([\s\S]*)$ index.php/$1 [L,NC,QSA]
# Ensure Authorization header is passed along
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
</IfModule>
<IfModule !mod_rewrite.c>
ErrorDocument 404 index.php
</IfModule>
ServerSignature Off

Answer 1

With codeigniter you shouldn't be passing URL segments with special characters. Those filters are there for security reasons. Instead, pass them as GET variables.
<a href="/notification?tab=<?=rawurlencode(urlencode($tab['href']))?>">
.. and in your controller
class Notification extends CI_Controller {
public function __construct() {
parent::__construct();
}
public function index() {
$tab = $this->input->get('tab');
}