sqrt.php

<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Square roots</title>
    <meta charset="utf-8">
  </head>
  <body>
  <h1>Table of square roots</h1> 
  <h2>rounded to 4 decimal places</h2>
    <?php
    for( $i=1; $i <= 25; $i++) {
       print "sqrt(" . $i . ")=" . round(sqrt($i),4) . "<br/>";
    }
    ?>
  </body>
</html>