Hi - you can use url encoding to pass values to a script
e.g. http://url/somefile.php?name=john
will give variable $name in somefile.php the value of john
or alternatively form elements likewise will do this,
e.g. if a text box in a form is called "name", and you write "john" into the box, and if the form action is to call somefile.php when submit is clicked, and somefile.php contains a variable $name, $name will be given the value john.