Prime Numbers:

        Prime number is a number that can be divided exactly only by itself and 1, for example 7, 17 and 41 1. 

Following code is developed with the help of html, css and php.

Step 1: Go to htdocs folder inside xammp folder. 

Step 2: Save file with prime.php

Step 3: Add above code

Step 4: Open xammp server and start apache

Step 5: Type localhost:8080//prime.php on browser

<html>
<head>
    <title>Prime Numbers</title>
    <link rel="stylesheet" href="char.css">
    <style>
   *{
        margin:0px;
        padding:0px;
        font-family: cambria;
    }
    .nav{
        background-image: linear-gradient(to bottom right, rgb(178, 115, 207), rgb(59, 185, 108));
        padding:10px;
        color:white;
        text-decoration:bold;
        font-size:larger;
    }
</style>
</head>
<body>
<div class="nav">
        PHP script to display all prime numbers between 1 to 200.
    </div>
    <br>
    <?php
        
      $num=2;
      $count=0;
    while($count<=200){
    $flag=False;
      for($i=2;$i<$num/2;$i++){
          if(($num%$i)==0){
            $flag=True; 
          }
      }
      if($flag){
          $num=$num+1;
          $count=$count+1;
      }else{
          echo "&nbsp;&nbsp; $num &nbsp;&nbsp;&nbsp;";
          $num=$num+1;
          $count=$count+1;
      }
       
    }
    ?>
</body>
</html>