Prevent "add_action" from being called multiple times

diff --git a/CRM/Utils/System/WordPress.php b/CRM/Utils/System/WordPress.php
index 2877ffed2ad9faaa5575732ac599da8835c932c6..98cb5a88fd8a9fadab1e872a04a57a30b26af718 100644 (file)
--- a/CRM/Utils/System/WordPress.php
+++ b/CRM/Utils/System/WordPress.php
@@ -271,6 +271,7 @@ class CRM_Utils_System_WordPress extends CRM_Utils_System_Base {
       add_action('wp_head', [__CLASS__, '_showHTMLHead']);
       // back-end views
       add_action('admin_head', [__CLASS__, '_showHTMLHead']);
+      $registered = TRUE;
     }
     CRM_Core_Region::instance('wp_head')->add([
       'markup' => $head,