How can I ensure that all URLs on my website lead to the same domain in PHP?

To ensure that all URLs on your website lead to the same domain in PHP, you can use a simple redirect rule in your .htaccess file. This rule will redirect any requests to a different domain back to your desired domain. 

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.yourdomain\.com$ [NC]
RewriteRule ^(.*)$ http://www.yourdomain.com/$1 [L,R=301]

Keywords

PHP URL redirection htaccess header function domain validation

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