What best practices should be followed when writing rules for mod_rewrite in PHP?

When writing rules for mod_rewrite in PHP, it is important to follow best practices to ensure the rules are efficient and effective. One key practice is to use specific and clear patterns to target the URLs you want to rewrite, avoiding overly broad rules that can cause unintended redirects. Additionally, it is recommended to test the rules thoroughly to ensure they are working as expected before deploying them to a live environment.

RewriteEngine On
RewriteRule ^old-page$ /new-page [L,R=301]