Added Birthdate

src/TgBotLib/Objects/Birthdate.php

@@ -0,0 +1,72 @@
+<?php
+
+    namespace TgBotLib\Objects;
+
+    use TgBotLib\Interfaces\ObjectTypeInterface;
+
+    class Birthdate implements ObjectTypeInterface
+    {
+        private int $day;
+        private int $month;
+        private ?int $year;
+
+        /**
+         * Day of the user's birth; 1-31
+         *
+         * @return int
+         */
+        public function getDay(): int
+        {
+            return $this->day;
+        }
+
+        /**
+         * Month of the user's birth; 1-12
+         *
+         * @return int
+         */
+        public function getMonth(): int
+        {
+            return $this->month;
+        }
+
+        /**
+         * Optional. Year of the user's birth
+         *
+         * @return int|null
+         */
+        public function getYear(): ?int
+        {
+            return $this->year;
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public function toArray(): ?array
+        {
+            return [
+                'day' => $this->day,
+                'month' => $this->month,
+                'year' => $this->year,
+            ];
+        }
+
+        /**
+         * @inheritDoc
+         */
+        public static function fromArray(?array $data): ?Birthdate
+        {
+            if($data === null)
+            {
+                return null;
+            }
+
+            $object = new self();
+            $object->day = $data['day'];
+            $object->month = $data['month'];
+            $object->year = $data['year'] ?? null;
+
+            return $object;
+        }
+    }