Stop the commas!!! ( or knowing when you're at the end of an array )

Hi all,

I am looking for a good way to know when I am at the end of a
comma-separated list of array values.

My code is simple (as well as I'm sure is the solution I'm looking for;
and YES I've search the php manual!! Arrggghh! )

Anyway the code goes like this:

...

<td><select name="pref_cities[]" multiple size="6">

<option>Nagpur</option>

<option>Mumbai</option>

<option>Bangalore</option>

<option>Chennai</option>

<option>Kolkatta</option>

</select></td>

...

<?php

$cities = $_POST['pref_cities'];

foreach ($cities as $city) {
echo $city . ", ";
}
?>

I want to know when I'm at the last element in $cities[] so that I can
output a period (.) instead of a comma (,).

Thanx all! Have a HAPPY NEW YEAR!!

Gene

.

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