Echo a comma on all but the last value? (result from mysql_fetch_array)

Question

How do I echo a comma on all but the last value? Here\'s my code:

while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {

    ECHO $servdescarrayrow         


        

Answer 1

you can remove the last comma after generating the string like so:

$str = '';
while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {
   $str .= $servdescarrayrow['serv_desc'].",";
}
$str = substr($str, 0, strlen($str) - 1);
echo $str;