If you have some questions please send me an email at jakerpomperada@yahoo.com and jakerpomperada@gmail.com. People here in the Philippines who wish to contact me can reach me at my mobile number 09173084360.
Thank you very much and Happy Productive Programming.
Program Listing
<html>
<title> Factorial Number Solver </title>
<style>
body {
font-size:20px;
font-family:arial;
color:blue;
}
</style>
<?php
error_reporting(0);
$values = $_POST['value'];
// function to solve of the factorial value
function factorial_solve($variable) {
if ($variable == 0)
return 1;
else
return($variable * factorial_solve($variable - 1));
}
if(isset($_POST['check'])) {
if (ctype_alpha($values)) {
echo "<script>";
echo "alert('PLEASE ENTER A NUMERIC VALUE.');";
echo "</script>";
$values="";
}
else if(preg_match('#[^a-zA-Z0-9]#', $values)) {
echo "<script>";
echo "alert('PLEASE ENTER A NUMERIC VALUE.');";
echo "</script>";
$values="";
}
else if ($values=="") {
echo "<script>";
echo "alert('It Cannot Be Empty!!! Please enter a integer value.');";
echo "</script>";
$values="";
}
else {
$title = "The factorial value of ".$values." is " .factorial_solve($values).".";
}
}
if(isset($_POST['clear'])) {
$values=" ";
$title=" ";
}
?>
<body style='background-color:lightgreen'>
<div style='width:800px;margin:auto'>
<br> <h1 align="center">Factorial Number Solver </h2>
<br>
<form action="" method="post">
Enter a Number : <input type="text" name="value" value="<?php echo $values; ?>" autofocus size=20/>
<input type="submit" name="check" value="Find Factorial Value"
title="Click here to know the factorial value of the given number."/>
<input type="submit" name="clear" value="Clear"
title="Click here to clear text box and values on the screen"/>
</form>
<br> <br>
<?php
echo $title;
?>
</body>
</html>
DOWNLOAD SOURCE CODE HERE
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