## Q. PHP Program to Print Fibonacci Series upto N terms.

Here you will find an algorithm and program in PHP to print fibonacci series. First let us understand what fibonacci series means.

Explanation : The Fibonacci sequence is a sequence consisting of a series of numbers and each number is the sum of the previous two numbers. For Example :- 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, …….

## Fibonacci Series Algorithm

```START
Step 1->Declare variables i, a, b, nextTerm
Step 2->Initialize the variables, a=0, b=1, and nextTerm = 0
Step 3->Enter the number of terms of Fibonacci series to be printed
Step 4->Repeat below steps n times
-> print the value of a
-> nextTerm = a + b
-> a = b
-> b = nextTerm
-> increase value of i each time by 1
STOP
```

# Fibonacci Series Program

```function Fibonacci(\$n){

\$a = 0;
\$b = 1;

\$counter = 0;
while (\$counter < \$n){
echo ' '.\$a;
\$nextTerm = \$b + \$a;
\$a = \$b;
\$b = \$nextTerm;
\$counter = \$counter + 1;
}
}

\$n = 9;
Fibonacci(\$n);
```

#### Output

```0 1 1 2 3 5 8 13 21
```