/**
  * Ausführung der XMLRPC-Anfrage
  *
  * @since   1.1.0
  * @change  1.2.5
  *
  * @param   array   $args  Array mit Parametern (Zugangsdaten)
  * @return  string         String mit Ergebnissen
  */
 public static function xmlrpc_callback($args)
 {
     /* Keine Zugangsdaten? */
     if (empty($args[0]) or empty($args[1])) {
         return '{"error": "Empty login data"}';
     }
     /* Nutzer einloggen */
     $user = wp_authenticate($args[0], $args[1]);
     /* Falsche Zugangsdaten */
     if (!$user or is_wp_error($user)) {
         return '{"error": "Incorrect login"}';
     }
     /* Berechtigung prüfen */
     if (!user_can($user, 'edit_dashboard')) {
         return '{"error": "User can check failed"}';
     }
     /* Leer? */
     if (!($data = Statify_Dashboard::get_stats())) {
         return '{"error": "No data"}';
     }
     return json_encode($data['visits']);
 }
 /**
  * Set plugin version from plugin meta data
  *
  * @since   1.4.0
  * @change  1.4.0
  */
 private static function _get_version()
 {
     /* Get plugin meta */
     $meta = get_plugin_data(STATIFY_FILE);
     self::$_plugin_version = $meta['Version'];
 }
<?php

/* Quit */
class_exists('Statify') or exit;
/* Get stats */
$stats = Statify_Dashboard::get_stats();
?>


<div id="statify_chart">
    <?php 
if (empty($stats['visits'])) {
    ?>
        <p>
            <?php 
    esc_html_e('No data available.', 'statify');
    ?>
        </p>
    <?php 
} else {
    ?>
        <table id="statify_chart_data">
            <?php 
    foreach ($stats['visits'] as $visit) {
        ?>
                <tr>
                    <th><?php 
        echo date_i18n(get_option('date_format'), strtotime($visit['date']));
        ?>
</th>
                    <td><?php