Replace annonymous function

Author: rajumsys

trunk/sparkpost.class.php

@@ -98,4 +98,13 @@ static function is_key_obfuscated($api_key)
     {
         return strpos($api_key, '*') !== false;
     }
+
+    public function init_sp_http_mailer($args)
+    {
+        global $phpmailer;
+        if (!$phpmailer instanceof SparkPostHTTPMailer) {
+            $phpmailer = new SparkPostHTTPMailer();
+        }
+        return $args;
+    }
 }

trunk/wordpress-sparkpost.php

@@ -35,13 +35,7 @@
         new SparkPostSMTPMailer();
     } else {
         require_once(WPSP_PLUGIN_DIR . 'mailer.http.class.php');
-        add_filter('wp_mail', function ($args) {
-            global $phpmailer;
-            if (!$phpmailer instanceof SparkPostHTTPMailer) {
-                $phpmailer = new SparkPostHTTPMailer();
-            }
-            return $args;
-        });
+        add_filter('wp_mail', array($sp, 'init_sp_http_mailer'));
     }
 }