Question

I want to redirect all to one script e.g. index.php?url=inputurl

With if/else I want to parse url

in index.php run query for url in my custom table

• if url is mach: echo “ok”
• else do nothing

How should I set .htaccess in root folder of WordPress?

Example:

URLs in custom_table:

• asd
• dfg
• ghj

If user puts:

http://www.mysite.com/asd

-> mod_rewrite should output this: http://www.mysite.com/index.php?url=asd

Else if user puts:

http://www.mysite.com/zzz

-> do nothing

Answer 1

I think the following .htaccess should solve the problem:

RewriteEngine On

# Redirects everything that is not index.php to index.php
RewriteCond $1 !^index\.php
RewriteRule ^(.*)$ index.php?url=$1 [L,R]

Edit: to not include your folders and files (like /js, /css, etc.) in rewrite, add the following lines before the RewriteRule line (see comments):

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

And in the PHP script:

$url = $_GET['url'];

// the method is_valid should check if the page exists in DB
if (is_valid($url)) {
    // do something here
    // maybe redirect with header('Location: path')
} else {
    // show a not found page (error 404)
}