In this tutorial, I will show how to write a PHP program that will ask the user to give a number and then the program will convert the given number to its square number equivalent.

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Program Listing

   <title>Square a Number in PHP </title>
      <style type="text/css">
      body {
        font-family: arial;
            size: 12px;

     $num_values = $_POST['num_val'];

   if(isset($_POST['submit'])) {
      $square = ($num_values * $num_values);

      $results ="The square number
       equivalent of $num_values is $square.";

 if(isset($_POST['clear'])) {
      $num_values = "";
      $results = "";

  <h2> Square a Number in PHP </h2>
  <p> Mr. Jake Rodriguez Pomperada,MAED-IT, MIT </p>
<form method="post">
   <p>Give a Number <input 
    type="numeric" name="num_val"
     value="<?php echo $num_values; ?>" autofocus required /></p>
<input type="submit" name="submit" 
   title="Click here to compute the square value. "
   value="Submit" />
    <input type="submit" name="clear" 
    title="Click here to clear the textbox."
    value="Clear" />

   echo $results;

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