Add Fibonacci Series in PHP

CONTRIBUTORS.md

@@ -625,4 +625,9 @@ Programming Languages: JavaScript, C++, Haskell, Scala, Python, Ruby
 Name: [Shreyansh Kulshreshtha](http://github.com/shreyanshkuls)<br />
 Place: Mandi, Himachal Pradesh, India<br />
 About: Undergraduate student, Music enthusiast, like programming<br />
-Programming Languages: C, C++<br />
+Programming Languages: C, C++<br />
+
+Name: [Leandro Ferreira](https://github.com/leofls)<br />
+Place: Maceió, Alagoas Pradesh, Brazil<br />
+About: robotics teacher, programming student<br />
+Programming Languages: PHP, C++, Java, Python<br />

fibonacci/fibonacci.php

@@ -0,0 +1,20 @@
+<?php 
+function Fibonacci($n){ 
+
+	$num1 = 0; 
+	$num2 = 1; 
+
+	$counter = 0; 
+	while ($counter < $n){ 
+		echo ' '.$num1; 
+		$num3 = $num2 + $num1; 
+		$num1 = $num2; 
+		$num2 = $num3; 
+		$counter = $counter + 1; 
+	} 
+} 
+
+
+$n = 10; 
+Fibonacci($n); 
+?>