The ampersand before the function name indicates that the function returns a reference instead of a copy of the variable, for example:
<?php
function &max(&$var1, &$var2) {
if ($var1 > $var2) return $var1;
else return $var2;
}
$global1 = 10;
$global2 = 9;
$maxglobal =& max($global1, $global2);
$maxglobal++;
echo $global1;
//this will print 11 since $maxglobal is a reference to $global1
?>
It's going to hurt thinking about that. :-)
But that produces the same results as:
<?php
function max($var1, $var2) {
if ($var1 > $var2) return $var1;
else return $var2;
}
$global1 = 10;
$global2 = 9;
$maxglobal =& max($global1, $global2);
$maxglobal++;
echo $global1;
//this will print 11 since $maxglobal is a reference to $global1
?>
Note the absence ampersands in the function, but an ampersand remains in the assignment:
Thanks.
tedd
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