Fixes time issue

Not sure why that worked for me, maybe my server's time is GMT?

slack.php

@@ -147,7 +147,7 @@ function sendToSlack(Ticket $ticket, $heading, $body, $colour = 'good') {
             'color'       => $colour,
             'title'       => $ticket->getSubject(),
             'title_link'  => $cfg->getBaseUrl() . 'scp/tickets.php?id=' . $ticket->getId(),
-            'ts'          => Misc::gmtime(),
+            'ts'          => time(),
             'footer'      => 'via osTicket Slack Plugin',
             'footer_icon' => 'https://platform.slack-edge.com/img/default_application_icon.png',
             'text'        => $body,
@@ -190,7 +190,6 @@ function sendToSlack(Ticket $ticket, $heading, $body, $colour = 'good') {
             ];
         }
 
-
         // Format the payload:
         $data_string = utf8_encode(json_encode($payload));
 
@@ -267,4 +266,29 @@ function format_text($text) {
         return substr(str_replace(array_keys($moreformatter), array_values($moreformatter), $formatted_text), 0, 500);
     }
 
+    /**
+     * Get either a Gravatar URL or complete image tag for a specified email address.
+     *
+     * @param string $email The email address
+     * @param string $s Size in pixels, defaults to 80px [ 1 - 2048 ]
+     * @param string $d Default imageset to use [ 404 | mm | identicon | monsterid | wavatar ]
+     * @param string $r Maximum rating (inclusive) [ g | pg | r | x ]
+     * @param boole $img True to return a complete IMG tag False for just the URL
+     * @param array $atts Optional, additional key/value attributes to include in the IMG tag
+     * @return String containing either just a URL or a complete image tag
+     * @source https://gravatar.com/site/implement/images/php/
+     */
+    function get_gravatar($email, $s = 80, $d = 'mm', $r = 'g', $img = false, $atts = array()) {
+        $url = 'https://www.gravatar.com/avatar/';
+        $url .= md5(strtolower(trim($email)));
+        $url .= "?s=$s&d=$d&r=$r";
+        if ($img) {
+            $url = '<img src="' . $url . '"';
+            foreach ($atts as $key => $val)
+                $url .= ' ' . $key . '="' . $val . '"';
+            $url .= ' />';
+        }
+        return $url;
+    }
+
 }