What best practices should be followed when setting up .htaccess rules for URL rewriting in PHP to avoid errors or unexpected behavior?

When setting up .htaccess rules for URL rewriting in PHP, it is important to follow best practices to avoid errors or unexpected behavior. One common mistake is not properly escaping special characters in the regular expressions used in the rules. To prevent this issue, it is recommended to use the "RewriteRule" directive with the "[L]" flag to stop processing further rules, and to test the rules thoroughly to ensure they are working as expected.

RewriteEngine On
RewriteRule ^example/([^/]+)$ index.php?param=$1 [L]