Add the date_helper.php to the project

application/config/autoload.php

@@ -69,6 +69,7 @@ $autoload['helper'] = [
     'array',
     'asset',
     'config',
+    'date',
     'debug',
     'env',
     'file',

application/helpers/date_helper.php

@@ -0,0 +1,141 @@
+<?php defined('BASEPATH') or exit('No direct script access allowed');
+
+/* ----------------------------------------------------------------------------
+ * Easy!Appointments - Open Source Web Scheduler
+ *
+ * @package     EasyAppointments
+ * @author      A.Tselegidis <alextselegidis@gmail.com>
+ * @copyright   Copyright (c) 2013 - 2020, Alex Tselegidis
+ * @license     http://opensource.org/licenses/GPL-3.0 - GPLv3
+ * @link        http://easyappointments.org
+ * @since       v1.4.0
+ * ---------------------------------------------------------------------------- */
+
+if ( ! function_exists('get_date_format'))
+{
+    /**
+     * Get the date format based on the current settings.
+     *
+     * @return string
+     */
+    function get_date_format(): string
+    {
+        $date_format = setting('date_format');
+
+        return match ($date_format)
+        {
+            'DMY' => 'd/m/Y',
+            'MDY' => 'm/d/Y',
+            'YMD' => 'Y/m/d',
+            default => throw new RuntimeException('Invalid date format value: ' . $date_format),
+        };
+    }
+}
+
+if ( ! function_exists('get_time_format'))
+{
+    /**
+     * Get the time format based on the current settings.
+     *
+     * @return string
+     */
+    function get_time_format(): string
+    {
+        $time_format = setting('time_format');
+
+        return match ($time_format)
+        {
+            'military' => 'H:i',
+            'regular' => 'g:i a',
+            default => throw new RuntimeException('Invalid time format value: ' . $time_format),
+        };
+    }
+}
+
+if ( ! function_exists('get_date_time_format'))
+{
+    /**
+     * Get the date-time format based on the current settings.
+     *
+     * @return string
+     */
+    function get_date_time_format(): string
+    {
+        return get_date_format() . ' ' . get_time_format();
+    }
+}
+
+
+if ( ! function_exists('format_date'))
+{
+    /**
+     * Format a date string based on the current app settings.
+     *
+     * @param DateTimeInterface|string $value
+     *
+     * @return string
+     *
+     * @throws Exception
+     */
+    function format_date(DateTimeInterface|string $value): string
+    {
+        $value_date_time = $value;
+
+        if (is_string($value_date_time))
+        {
+            $value_date_time = new DateTime($value);
+        }
+
+        return $value_date_time->format(get_date_format());
+    }
+}
+
+if ( ! function_exists('format_time'))
+{
+    /**
+     * Format a time string based on the current app settings.
+     *
+     * @param DateTimeInterface|string $value
+     *
+     * @return string
+     *
+     * @throws Exception
+     */
+    function format_date(DateTimeInterface|string $value): string
+    {
+        $value_date_time = $value;
+
+        if (is_string($value_date_time))
+        {
+            $value_date_time = new DateTime($value);
+        }
+
+        return $value_date_time->format(get_time_format());
+    }
+}
+
+if ( ! function_exists('format_date_time'))
+{
+    /**
+     * Format a time string based on the current app settings.
+     *
+     * @param DateTimeInterface|string $value
+     *
+     * @return string
+     *
+     * @throws Exception
+     */
+    function format_date_time(DateTimeInterface|string $value): string
+    {
+        $value_date_time = $value;
+
+        if (is_string($value_date_time))
+        {
+            $value_date_time = new DateTime($value);
+        }
+
+        return $value_date_time->format(get_date_time_format());
+    }
+}
+
+