Basically what people try to say is, you can make a rewrite rule like so:
RewriteRule ^(.*)$ index.php?params=$1 [NC, QSA]
This will make your actual php file like so:
index.php?params=param/value/param/value
And your actual URL would be like so:
http://url.com/params/param/value/param/value
And in your PHP file you could access your params by exploding this like so:
<?php
$params = explode( "/", $_GET['params'] );
for($i = 0; $i < count($params); $i+=2) {
echo $params[$i] ." has value: ". $params[$i+1] ."<br />";
}
?>