How can PHP scripts be used in conjunction with user-owned domains to maintain a consistent URL structure?

When using PHP scripts with user-owned domains, it is important to maintain a consistent URL structure for better organization and SEO purposes. One way to achieve this is by using a .htaccess file to rewrite URLs to a common format, such as removing file extensions or adding trailing slashes. This can help ensure that all pages on the website have a uniform appearance in the URL structure.

RewriteEngine On
RewriteBase /

# Remove .php extension from URLs
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [L]

# Add trailing slash to URLs
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+[^/])$ /$1/ [R=301,L]