Не удается загрузить параметры из плагина WordPress

Итак, у меня есть этот кусок кода:

$now = new DateTime;
$startdate = DateTime::createFromFormat('H:i', "9:00");
$stopdate = DateTime::createFromFormat('H:i', "17:00");
if ($now > $startdate && $now < $stopdate)
return true;
return false;

Предположим, что это 9:15 Uhr. Почему это возвращение ложно? Как видите, я просто хочу проверить, находится ли текущее время между начальной датой и временной датой.

РЕДАКТИРОВАТЬ: нашел ошибку, но не знаю, как ее исправить:

Я тестирую плагины WordPress, и у меня есть этот маленький плагин:

<?php
class OpeningHours
{
public $options;
private static $instance;public static function get() {
if (self::$instance === null) {
self::$instance = new self();
}
return self::$instance;
}

public function __construct()
{

add_action('admin_init', array($this, 'page_init'));
add_action('admin_menu', array($this, 'add_plugin_page'));
self::$instance = $this;
}
public function isOpen()
{
$dow_numeric = date('w'); $dow_text = strtolower(date('l', strtotime("Sunday +{$dow_numeric} days"))); $startname = $dow_text . "start";
$stopname = $dow_text . "stop";
$starttime = $this->options[$startname];
$stoptime = $this->options[$stopname];
$now = new DateTime;
$startdate = DateTime::createFromFormat('H:i', $starttime);
$stopdate = DateTime::createFromFormat('H:i', $stoptime);
if ($now > $startdate && $now < $stopdate)
return true;
return false;
}

/**
* Add options page
*/
public function add_plugin_page()
{
// This page will be under "Settings"add_options_page(
'Oeffnungzeiten managen',
'Öffnungszeiten',
'manage_options',
'opening-hours-settings',
array($this, 'create_admin_page')
);
}public function create_admin_page()
{
// Set class property
$this->options = get_option('oeffnungszeiten');
?>
<div class="wrap">
<h1>Öffnungszeiten anpassen</h1>
<p>Bitte immer im Format H:i schreiben. Für dauerhaft geschlossen verwenden sie für Anfang und Ende
0:00.</p>
<form method="post" action="options.php">
<?php
// This prints out all hidden setting fields
settings_fields('opening_hours_group');
do_settings_sections('opening-hours-settings');
submit_button();
?>
</form>
</div>
<?php
}public function page_init()
{
register_setting(
'opening_hours_group', // Option group
'oeffnungszeiten', // Option name
array($this, 'sanitize') // Sanitize
);

add_settings_section(
'opening_hours_section', // ID
'Öffnungszeiten:', // Title
array($this, 'print_section_info'), // Callback
'opening-hours-settings' // Page
);

$this->addOptionsField("opening_hours_section", "monday", "Montags geöffnet von:");
$this->addOptionsField("opening_hours_section", "tuesday", "Dienstags geöffnet von:");
$this->addOptionsField("opening_hours_section", "wednesday", "Mittwochs geöffnet von:");
$this->addOptionsField("opening_hours_section", "thursday", "Donnerstags geöffnet von:");
$this->addOptionsField("opening_hours_section", "friday", "Freitags geöffnet von:");
$this->addOptionsField("opening_hours_section", "saturday", "Samstags geöffnet von:");
$this->addOptionsField("opening_hours_section", "sunday", "Sonntags geöffnet von:");
}

public function print_section_info()
{
}/**
* Sanitize each setting field as needed
*
* @param array $input Contains all settings fields as array keys
* @return - new input
*/
public function sanitize($input)
{
$new_input = array();
$new_input = OpeningHours::subsanitize($new_input, $input, "mondaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "mondaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "tuesdaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "tuesdaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "wednesdaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "wednesdaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "thursdaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "thursdaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "fridaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "fridaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "fridaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "saturdaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "saturdaystop");
$new_input = OpeningHours::subsanitize($new_input, $input, "sundaystart");
$new_input = OpeningHours::subsanitize($new_input, $input, "sundaystop");
return $new_input;
}

public static function subsanitize($new_input, $input, $name)
{
if (isset($input[$name]))
$new_input[$name] = sanitize_text_field($input[$name]);
return $new_input;
}

public function addOptionsField($section_id, $name, $title)
{
add_settings_field(
$name, // ID
$title, // Title
array($this, 'day_callback'), // Callback
'opening-hours-settings', // Page
$section_id,
array(
'name' => $name
)// Section
);
}

/**
* Callback to register the several functions.
* @param $name - The name of the callback
*/
public function day_callback($args)
{
$name = $args['name'];
$namestart = $name . "start";
$namestop = $name . "stop";
printf(
'<input type="text" id="%sstart" name="oeffnungszeiten[%s]" value="%s" /> Uhr bis <input type="text" id="%s" name="oeffnungszeiten[%s]" value="%s" /> Uhr',
$namestart, $namestart, isset($this->options[$namestart]) ? esc_attr($this->options[$namestart]) : '',
$namestop, $namestop, isset($this->options[$namestop]) ? esc_attr($this->options[$namestop]) : ''
);
}
}

$hours = new OpeningHours();

add_shortcode('openinghours', 'opening');
function opening($atts)
{
ob_start();
?>
<div class="wrap">
<p style="color:<?php echo OpeningHours::get()->isOpen() ? '#006400' : '#EE3B3B' ?>"><?php echo OpeningHours::get()->isOpen() ? "Jetzt geöffnet!" : "Gerade geschlossen."  ?></p>
</div>
<?php
$output = ob_get_contents();
ob_end_clean();

return $output;
}

Виновник в этом:

 $this->options = get_option('oeffnungszeiten');

Варианты по-прежнему NULL. Так что это нормально, что сравнение невозможно.

Похоже, мой плагин не может найти варианты? Я не могу найти ошибку, поэтому, возможно, у кого-то из вас может быть идея. Я не привык к PHP.