添加公共方法

app/common.php

@@ -138,4 +138,53 @@ function base_url()
         $baseUrl = $request->scheme() . '://' . $request->host() . $subDir . ($subDir === '/' ? '' : '/');
     }
     return $baseUrl;
+}
+
+function getStartAndEndDatetime($period) {
+    switch ($period) {
+        case 'today':
+            $startDatetime = strtotime('today');
+            $endDatetime = strtotime('tomorrow - 1 second');
+            break;
+        case 'this_week':
+            $startDatetime = strtotime('this week');
+            $endDatetime = strtotime('next week - 1 second');
+            break;
+        case 'this_month':
+            $startDatetime = strtotime('first day of this month');
+            $endDatetime = strtotime('first day of next month - 1 second');
+            break;
+        case 'this_year':
+            $startDatetime = strtotime('first day of January this year');
+            $endDatetime = strtotime('first day of January next year - 1 second');
+            break;
+        default:
+            return null;
+    }
+
+    $startDatetimeStr = date('Y-m-d H:i:s', $startDatetime);
+    $endDatetimeStr = date('Y-m-d H:i:s', $endDatetime);
+
+    return [
+        'start_datetime' => $startDatetimeStr,
+        'end_datetime' => $endDatetimeStr
+    ];
+}
+function formatNumber($number)
+{
+    if ($number < 10000) {
+        return number_format($number);
+    } else if ($number < 100000000) {
+        if ($number % 10000 == 0) {
+            return number_format($number / 10000) . '万';
+        } else {
+            return number_format($number);
+        }
+    } else {
+        if ($number % 100000000 == 0) {
+            return number_format($number / 100000000) . '亿';
+        } else {
+            return number_format($number);
+        }
+    }
 }