How to redirect invalid url in .htaccess?

@emelie 

To redirect invalid URLs using .htaccess, you can use the following codes:

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RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php [L,R=301]

Here's a breakdown of what each line does:

1. RewriteEngine On: Enables the Apache mod_rewrite module.
2. RewriteCond %{REQUEST_FILENAME} !-f: This line checks if the requested URL does not point to an existing file.
3. RewriteCond %{REQUEST_FILENAME} !-d: This line checks if the requested URL does not point to an existing directory.
4. RewriteRule ^(.*)$ /index.php [L,R=301]: This line redirects any invalid URL to "/index.php" with a 301 (permanent) redirect status.

Replace "/index.php" with the desired URL to redirect invalid URLs to.