<!DOCTYPE html>
<html>
<body>
<?php
$start = 1;
$end = 20;
$count = 0;
$flag = 0;
$i = 1;
echo "Prime numbers between $start and $end: <br>";
for($start=$start; $start<=$end; $start++)
{
for($i=1; $i<=$start; $i++)
{
if($start % $i == 0)
$count++;
}
if($count == 2)
{
$flag = 1;
echo "$start ";
}
$count = 0;
}
if($flag == 0)
echo "There is no Prime numbers between the given series";
?>
</body>
</html>