Solved ProjectEuler\020: php, ruby

ProjectEuler/020/solve.php

@@ -0,0 +1,15 @@
+<?php
+define('FACTORIAL',100);
+
+function factorial($num) {
+	if($num == 0) 
+		return 1;
+	else 
+		return bcmul($num,factorial(bcsub($num,1)));
+}
+$sum = 0;
+$fac = factorial(FACTORIAL);
+for($c = 0; $c < strlen($fac); $c++) {
+	$sum += $fac[$c];
+}
+echo $sum;