How do I get sum of distinct value from php list that was exploded?

Question

I have a list that is created from a mysql field that is exploded into a list

$calls=mysql_query("SELECT callback_info FROM  table WHERE callback_info !=''",$conn);

while($cust=mysql_fetch_array($calls)){

list($name,$time) = explode(",", $cust['callback_info']);
    echo $name."<br>";

}

This gives me something like:

Snoop
Daz
Kurupt
Snoop
Snoop

I want to show the distinct name with the number of times it appeared like:

Snoop (3)
Daz (1)
Kurupt (1)

How would I go about doing this?

UPDATE this worked for me... $name needed to be put into an array

$calls=mysql_query("SELECT callback_info FROM  table WHERE callback_info !=''",$conn);

$data = array();

while($cust=mysql_fetch_array($calls)){

    list($name,$time) = explode(",", $cust['callback_info']);
       $data[] = $emp;

    }

$array = array_count_values($data);

for ($i = 0; $i <  count($array); $i++) {
    $name=key($array);
    $number_calls=$array[$name];
    if ($number_calls<> ' ') {
       echo $name ." made ".  $number_calls ." calls<br> ";
       }
     next($array);
    }