Merge pull request #52 from r-deleon/master

PHP solutions

Author: blakeembrey

factorial/factorial.php

@@ -0,0 +1,32 @@
+<?php
+
+    // Iterative solution
+    function factorial($number){
+        $result = 1;
+        for($i=1; $i <= $number ; $i++){
+            $result *=$i;
+        }
+        return $result;
+    }
+
+    // Iterative using a reverse loop
+    function factorialReverse($number){
+        $result = 1;
+        while($number !=1){
+            $result *= $number;
+            $number--;
+        }
+        return $result;
+    }
+
+    // Recursive solution
+    function factorialRecursive($number){
+        if($number ==1){
+            return 1;
+        }
+        else{
+            return $number *factorialRecursive($number-1);
+        }
+    }
+
+?>

integer-length/integer-length.php

@@ -0,0 +1,7 @@
+<?php
+
+function IntegerLength($num){
+    return strlen((string) $num);
+}
+
+?>

sum-of-array-plus-one/sum-of-array-plus-one.php

@@ -0,0 +1,11 @@
+<?php
+
+function SumOfIntegers($integerArray){
+    $sum = 0;
+    foreach($integerArray as $valor){
+        $sum += $valor;
+    }
+    return $sum + count($integerArray);
+}
+
+?>