in my php5 code i want to use the UNIX_TIMESTAMP function to convert a datetime to a unix timestamp without using php code to convert as i believe this way is quicker but how do you then get the unix timestamp out of the rowset ie how to index into the rowset to get the integer unix timestamp out

Aşağıda veritabanı şeması bir özeti

age   int(5) 
user  varchar(256)    
created  timestamp   CURRENT_TIMESTAMP 

$query="SELECT user, UNIX_TIMESTAMP(created) FROM  accounts WHERE age='$age'" ;
$result = mysql_query($query)  or die ('Error querying domain');

while($row = mysql_fetch_array($result))
{
 $callerid = $row['callerid'];
 $created_ts = $row['created'];
 etc....