Someone

<?php
$s="234,290,23.976";
$num="";
$numcount=0;
for ($t=0;$t++;$t<strlen($s)) 
 {
  if (($s[$t]==",") || ($t==strlen(s)-1))
   {
    if ($t==strlen(s)-1) 
     $num=$num+$s[$t];
    echo "$num";
    if($num=="23.976")
     echo("Donkey Donkey Donkey!!!");
    $numcount++;
    $num="";
   }
  else 
   {
    $num=$num+$s[$t];
    echo $num;
   }
 }
 ?>