Home >>PHP Programs >PHP Program to print the Fibonacci series

PHP Program to print the Fibonacci series

In this example, we will create a PHP program to print the Fibonacci series.

If the numbers in a series is the sum to its previous two numbers then it is said to be a Fibonacci series.

Fibonacci Series in PHP Example 1


<?php  
$num = 0;  
$n1 = 0;  
$n2 = 1;  
echo "<h3>Fibonacci series for first 12 numbers: </h3>";  
echo "\n";  
echo $n1.' '.$n2.' ';  
while ($num < 10 )  
{  
    $n3 = $n2 + $n1;  
    echo $n3.' ';  
    $n1 = $n2;  
    $n2 = $n3;  
    $num = $num + 1;  
}

?>

Output:-
Fibonacci series for first 12 numbers:
0 1 1 2 3 5 8 13 21 34 55 89

Fibonacci Series in PHP Example 2


<?php 
extract($_REQUEST);
if(isset($check))
{
$num = 0;  
$n1 = 0;  
$n2 = 1;  
echo "<h3>Fibonacci series for first $n numbers: </h3>";  
echo "\n";  
echo $n1.' '.$n2.' ';  
while ($num < $n-2 )  
{  
    $n3 = $n2 + $n1;  
    echo $n3.' ';  
    $n1 = $n2;  
    $n2 = $n3;  
    $num = $num + 1;  
}
}
?>
<!DOCTYPE html>
<html>
	<head>
		<title>Form</title>
	</head>
	<body>
		<form method="post">
		<table>
		<tr>
		<td>Enter Your Number</td>
		<td><input type="text" name="n" required/></td>
		</tr>
		<td colspan="2" align="center">
			<input type="submit" value="Print Fibonacci Series" name="check"/>
		</tr>
		</form>
	</body>
</html>
</html>

Output:-

« Previous

PHP Programs Find Minimum value of an array PHP get max value in array Find second largest number in array PHP get highest value in multidimensional array Sort an array in PHP Sort an array in descending order in PHP Age calculator in PHP How to Get the Current Page URL Convert Number into Words in PHP Simple Steps to Fix 403 Forbidden Errors How To Change Port of Apache Get Multiple checkbox value in PHP How to Print January to December using PHP PHP Read Pdf file How to remove duplicate characters from string How to reverse words in a string How to Get Difference between two dates Sum of two numbers without using + operator in PHP Check A Number is Prime or Not in PHP How to get IP address in PHP PHP Program to find the area of a given triangle PHP Program to find armstrong number PHP Program to check number is even or odd PHP Program to print the factorial of a given number PHP Program to print the Fibonacci series

No Sidebar ads