Mine

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