не работает ооп

backend/modules/reports/models/Month.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace backend\modules\reports\models;
+
+use common\classes\Debug;
+use yii\base\Model;
+use function GuzzleHttp\Psr7\str;
+
+class Month
+{
+
+    public $inactive_begin;
+    public $inactive_end;
+    public $active;
+    public $days;
+
+    public function __construct($date = null)
+    {
+//        $date = '2021-08-10';
+        $this->inactive_begin = [];
+        $this->inactive_end = [];
+//        Debug::prn($date);
+        if (!$date and !self::is_date($date)) {
+
+            $date = date('Y-m-d');
+            Debug::dd($date);
+        }
+//        Debug::dd($date);
+
+        $first_day_of_week = self::get_day_week(self::get_first_day($date));
+        $quantity_days = self::get_days_month($date);
+
+        $day = 1;
+
+        for (
+            $index = $first_day_of_week;
+            $index < $first_day_of_week + $quantity_days;
+            $index++, $day++
+        ) {
+            $this->active[$index] = $day;
+        }
+
+        $prev_month = date('Y-m-d', strtotime(self::get_first_day($date)) - 3600 * 37);
+
+        $day = self::get_days_month($prev_month);
+
+        for ($index = $first_day_of_week - 1; $index >= 1; $index--, $day--) {
+            $this->inactive_begin[$index] = $day;
+        }
+
+        $day = 1;
+        $index_end = ($first_day_of_week==7?42:35);
+        for ($index = $quantity_days + $first_day_of_week; $index <=$index_end; $index++, $day++) {
+            $this->inactive_end[$index] = $day;
+        }
+
+        $this->days = array_merge($this->inactive_end, $this->inactive_begin, $this->active);
+//        Debug::dd($this);
+
+    }
+
+    public static function next_day($date, $number)
+    {
+        return date('Y-m-d', strtotime($date) + 3600 * 24 * $number);
+    }
+
+    public static function get_first_day($date)
+    {
+        return date('Y-m-01', strtotime($date));
+    }
+
+    public static function get_day_week($date)
+    {
+        $day = date('w', strtotime(date($date)));
+        if($day==0)
+            return 7;
+        return $day;
+    }
+
+    public static function is_date($date)
+    {
+        $date = date_parse($date);
+        if ($date or checkdate($date['month'], $date['day'], $date['year']))
+            return true;
+        return false;
+    }
+
+
+    public static function get_days_month($date)
+    {
+        return date("t", strtotime($date));
+    }
+
+
+    public function a()
+    {
+//        $a = date('w', strtotime(date('')))
+    }
+
+
+}