What does the ampersand in "&$varName" do?

[neophyte]

Hello All -

I've run across a php function script on the web which has an ampersand (&) infront of a number of vars passed to it.

Like this:

function thisFunc ($varOne, $varTwo, &$varThree, &$varFour)
{
do this;
do that;
...
}

I've never run across a VAR that's preceded by an '&' and am just wondering about it's functionality and in what cases is it appropriate to use.

Any enlightenment greatly appreciated.

Neophyte

[eelixduppy]

The & before the var means that it's a reference. More information in php.net's documentation titled References Explained [us2.php.net].

Good luck!

[neophyte]

eelixduppy -

Thanks for the pointer and appreciate your assistance.

Neophyte