take arbitrary # of params to function

multi-param.php

<?php
// yes, the argument list can be empty
function foo() {

        // returns an array of all passed arguments
        $args = func_get_args();

        foreach ($args as $k => $v) {
                echo "arg".($k+1).": $v\n";
        }

}

foo();
/* prints nothing */

foo('hello');
/* prints
arg1: hello
*/

foo('hello', 'world', 'again');
/* prints
arg1: hello
arg2: world
arg3: again
*/
?>