Replace function getTimezones in to collect

app/Traits/DateTime.php

@@ -2,9 +2,11 @@
 
 namespace App\Traits;
 
-use App\Traits\SearchString;
-use Carbon\CarbonPeriod;
 use Date;
+use DateTimeZone;
+use Illuminate\Support\Str;
+use Carbon\CarbonPeriod;
+use App\Traits\SearchString;
 
 trait DateTime
 {
@@ -59,42 +61,13 @@ trait DateTime
 
     public function getTimezones()
     {
-        $groups = [];
-
-        // The list of available timezone groups to use.
-        $use_zones = array('Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific');
-
-        // Get the list of time zones from the server.
-        $zones = \DateTimeZone::listIdentifiers();
-
-        // Build the group lists.
-        foreach ($zones as $zone) {
-            // Time zones not in a group we will ignore.
-            if (strpos($zone, '/') === false) {
-                continue;
-            }
-
-            // Get the group/locale from the timezone.
-            list ($group, $locale) = explode('/', $zone, 2);
-
-            // Only use known groups.
-            if (in_array($group, $use_zones)) {
-                // Initialize the group if necessary.
-                if (!isset($groups[$group])) {
-                    $groups[$group] = [];
-                }
-
-                // Only add options where a locale exists.
-                if (!empty($locale)) {
-                    $groups[$group][$zone] = str_replace('_', ' ', $locale);
-                }
-            }
-        }
-
-        // Sort the group lists.
-        ksort($groups);
-
-        return $groups;
+        return collect(DateTimeZone::listIdentifiers())
+            ->mapWithKeys(function ($timezone) {
+                return [$timezone => Str::after($timezone, '/')];
+            })
+            ->groupBy(function ($item, $key) {
+                return Str::before($key, '/');
+            }, preserveKeys: true);;
     }
 
     public function getFinancialStart($year = null)