Added a new smarty function.

git-svn-id: http://svn.cleancode.org/svn/pickles@116 4d10bc64-7434-11dc-a737-d2d0f8310089

functions/smarty/function.age.php

@@ -0,0 +1,25 @@
+<?php
+
+function smarty_function_age($params, &$smarty) {
+	
+	if (empty($params['dob'])) {
+		$smarty->trigger_error('assign: missing \'dob\' parameter');
+	}
+	else {
+
+		// Breaks the date apart
+		list($dob_year, $dob_month, $dob_day) = split('-', $params['dob'], 3);
+		
+		// Determines the age regardless of the day
+		$age = date('Y') - $dob_year;
+
+		// If today's month day is less than the dob decrement
+		if (date('md') < $dob_month . $dob_day) {
+			$age--;
+		}
+
+		return $age;
+	}
+}
+
+?>