Php Script to display prime numbers from 1 to 200

on

(primeno.html)//inputting

<!DOCTYPE html>
<html>
<form method="POST" action="pno.php">
Enter No:<input type="number" name="n1"><br>
<input type="submit">
</form>
</html>





(pno.php)

<?php
$n=$_POST["n1"];
$count=0;
for($num=1;$num<=$n;$num++) {
$count=0;
for($i=1;$i<=$num;$i++) {
  if($num%$i==0) {
      $count++;
     }
}
if($count==2)
echo "$num"," ";
}
?>


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