How to write a RewriteRule?

Question

htaccess

There is such a CNC code.

RewriteRule ^uid(.*)$ /index.php?uid=$1 [L,QSA]
RewriteRule ^(.*)$ /index.php?uname=$1 [L,QSA]

How to make it so that if there is a uid in the url, then use line 1, if not, then line 2?
And in general, what is the best way to process it through php or make a rule in htaccess? I am for htaccess.

Answer 1

Routing is better to implement in php, there is such a thing as one entry point to applications, read for it, why shouldn't you do routing on htaccess? Because it is less flexible than php routing.