In this tutorial, I will show you how to write a program to ask the user to give a number and then the program will check if the given number in positive, zero, or negative number using PHP programming language.
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Program Listing
index.php
<html>
<head>
<title>Positive and Negative Number in PHP </title>
</head>
<body>
<style type="text/css">
body {
font-family: arial;
size: 12px;
};
</style>
<?php
$num_values = $_POST['num_val'];
function CheckNumber($x) {
if ($x > 0)
{$message = "The given number
$x is a Positive number.";}
if ($x == 0)
{$message = "The given number
$x is Zero.";}
if ($x < 0)
{$message = "The given number
$x is a Negative number.";}
return $message;
}
if(isset($_POST['submit'])) {
$results= CheckNumber($num_values);
}
if(isset($_POST['clear'])) {
$num_values = "";
$results = "";
}
?>
<h2> Positive and Negative 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 cube root. "
value="Submit" />
<input type="submit" name="clear"
title="Click here to clear the textbox."
value="Clear" />
</form>
<?php
echo $results;
?>
</body>
</html>
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