Information can be passed to functions through arguments. An argument is just like a variable.
Arguments are specified after the function name, inside the parentheses. You can add as many arguments as you want, just separate them with a comma.
The following example has a function with one argument ($fname). When the familyName() function is called, we also pass along a name (e.g. Jani), and the name is used inside the function, which outputs several different first names, but an equal last name:
<?php function familyName($fname) { echo "$fname Refsnes.<br>"; } familyName("Jani"); familyName("Hege"); familyName("Stale"); familyName("Kai Jim"); familyName("Borge"); ?>