I wrote this simple program to ask the user to give a number and then the program will square the given number and display the results on the screen using PHP as my programming language.
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Sample Program Output
Program Listing
index.php
<html>
<head>
<title> Square a Number in PHP </title>
</head>
<body>
<h2> Square a Number in PHP </h2><br>
<form method ="post">
Give a Number <input type ="text" name="num"/> <br>
<button type="submit" title="Click here to compute square value">
Compute </button>
</form>
</body>
</html>
<?php
if ($_POST) {
$num = $_POST['num'];
$compute = ($num * $num);
echo "The square value of $num is $compute.";
}
?>
