From f6b942f4a72ae04400f499e5e02bb83cfb492af4 Mon Sep 17 00:00:00 2001
From: Lukas Halbritter <halbritl@informatik.uni-freiburg.de>
Date: Sun, 27 Jan 2019 22:40:00 +0100
Subject: [PATCH] Added functions to get first and last day of the year.

---
 app/Http/helpers.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/app/Http/helpers.php b/app/Http/helpers.php
index c41f710..cc43ca4 100644
--- a/app/Http/helpers.php
+++ b/app/Http/helpers.php
@@ -106,6 +106,26 @@ function endOfMonth($year, $month, $format='d.m.Y') {
                         ->endOfMonth()->format($format);
 }
 
+/**
+ * Return the first day of a given year.
+ *
+ * @param string $year
+ * @return string E. g. 01.01.2018
+ */
+function firstDayOfYear($year, $format='d.m.Y') {
+    return Carbon\Carbon::parse('01.01.' . $year)->format($format);
+}
+
+/**
+ * Return the last day of a given year.
+ *
+ * @param string $year
+ * @return string E. g. 31.12.2018
+ */
+function lastDayOfYear($year, $format='d.m.Y') {
+    return Carbon\Carbon::parse('31.12.' . $year)->format($format);
+}
+
 /**
  * Check, if all fields of an array are null.
  * Returns true, if all fields of $array are null. Returns fals,e otherwise