Wed May 20 2020
Fibonacci Series
PHP Scripting1514 views
File Name: php-fibonacci-series.php
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="text" name="length" placeholder="Length of the Fibonacci Series" />
<input type="submit" />
</form>
<?php
if(isset($_POST['length'])) {
if(is_numeric($_POST['length'])) {
$a = 0;
$b = 1;
echo "<br /> Fibonacci Series:<br /> 0";
/* Loop the process using "While Loop" */
while($b <= $_POST['length']) {
echo " ".$b;
$temp = $a + $b;
$a = $b;
$b = $temp;
}
}
}
?>
</body>
</html>
/* Output */
Input:
20
Fibonacci Series:
0 1 1 2 3 5 8 13
Reference:
isset and is_numeric
Author:Geekboots