I'm wondering how sites like Pastebin and Twitter pass (what I assume to be) variables via the URL.
For example, take a Pastebin URL. It has the format of http://www.pastebin.com/<PASTE_UID>. I'm wondering how they parse the UID without the server trying to treat it like an actual page. I can't imagine they generate individual files for each post.
I know this is most likely a combination of mod_rewrite and parsing the variable from the URL on the backend to extract the variable, but I'm at a loss on how to do it.
As you said, you can use apache mod_rewrite, i.e.:
Create an .htaccess file on the root of your website with the following content:
RewriteEngine on
RewriteRule ^uid/(.*)$ /uid.php?uid=$1 [NC]
If, for example, the url is http://yoursite.com/uid/123456, apache will send the value 123456 via $_GET request to uid.php, you can get the uid value using:
<?php
if(!empty($_GET['uid'])){
$uid = $_GET['uid'];
//123456
}
?>
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