why not explode the array,
$pupies ="4,9,10,11,12,13,14"
$pupiesArray= explode(",", $pupies);
$total_pupies=count($pupiesArray);
for($item=0;$item<count($pupiesArray);$item++){
mysql_connect($host,$username,$password);
mysql_select_db($database) or die( "Unable to select database");
$query="SELECT * FROM table WHERE id IN ('$pupiesArray[$item]')" ;
$result=mysql_query($query);
}
or something similar, untested