Don't know who mr. is - perhaps you mean Laserlight. Anywayz - the deal is, as Laserlight demonstrates, that you can add a query string to the end of any URL, thus:
<a href="myfile_displaydata.php?param=myparameter&style=mystyle" title="My page" target="_blank">My page</a>
. You just add a question mark to the end of the file name, the variable(without dollar sign) the equals operator and the value. For multiple arguments you use an ampersand between the arguments. The query is then available in the $_GET global array, or, if you have register_globals activated, simply available globally. Check your php_info() for details.
You can then use these variables to determine which content should be loaded. Thus you have only one file, but with variable content. This is perfect for cases where you have lots of content, but the display of the content is essentially the same in each case, e.g. mynewspage.php?date=today, mynewspage.php?date=yesterday
Best o luck
Norm