A-M baby

Task/Fibonacci-sequence/PHP/fibonacci-sequence-1.php

@@ -0,0 +1,11 @@
+function fibIter($n) {
+    if ($n < 2) {
+        return $n;
+    }
+    $fibPrev = 0;
+    $fib = 1;
+    foreach (range(1, $n-1) as $i) {
+        list($fibPrev, $fib) = array($fib, $fib + $fibPrev);
+    }
+    return $fib;
+}

Task/Fibonacci-sequence/PHP/fibonacci-sequence-2.php

@@ -0,0 +1,3 @@
+function fibRec($n) {
+    return $n < 2 ? $n : fibRec($n-1) + fibRec($n-2);
+}