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How do sites use an actual URL location as a parameter?
Example:
Parameter = www.mysite.com/search.php?q=parameter
URL = www.mysite.com/s/parameter
Another Example:
Parameter = www.mysite.com/user.php?uid=someid
URL = www.mysite.com/users/username
How do they prevent a 404 error and instead treat the URL ‘ending’ as a parameter?
Any answer is appreciated but php preffered.
UPDATE: Is how you set this up dependent on your hosting provider?
This is commonly known as “routing”, and is a feature of many frameworks.
It is facilitated by a web server configuration (see mod_rewrite on Apache) that internally rewrites any URL not matching an actual file to the index of the folder above it, and so on.
See also: http://knol.google.com/k/seo-friendly-url-or-pretty-url-using-apache-mod-rewrite#