Help passing by reference

[sfullman]

Hi There,

This is meant to be as generic as possible for the sake of clarity - I thank in advance the bright guy who knows the answer to this one

I understand passing by reference, here is an example we can all understand:

function t($a){
   $a=7;
}
$a=5;
echo 'a is '.$a; //starting value
t(&$a); //using the & we pass by reference
echo 'a is now '.$a;

HOWEVER, I have a function which allows an UNDETERMINED NUMBER of vars to be passed to it. How do I get the same pass-by-reference results in this case?

(following does NOT work)

function t(){
   $args=&func_get_args();
   $args[0]=7;
}
$a=5;
echo 'a is '.$a; //starting value
t(&$a); //using the & we pass by reference
echo 'a is now '.$a;  //again, this does NOT work

Thank you for your assistance - can this be done?
Samuel

[NogDog]

This is the best I can think of (though I'm not sure I'd really ever want to do such a thing):

<?php
function t(&$arr){
   foreach($arr as &$val)
   {
      $val = 7;
   }
}
$a = 5;
$b = 6;
$data = array();
$data[] =& $a;
$data[] =& $b;
echo "a: $a, b: $b<br />\n"; //starting value
t($data); //using the & we pass by reference
echo "a: $a, b: $b";  //again, this does NOT work 
?>