Ticket #3946: 3946.diff

mu-plugins/pub/wporg-canonical-tweaks.php

@@ +1 @@
+<?php
+
+/**
+ * Custom Canonical redirect for Facebook and Twitter referrers.
+*/
+add_action( 'template_redirect', function() {
+
+        // Only run on pages with canonical enabled.
+        if ( ! has_action( 'template_redirect', 'redirect_canonical' ) ) {
+                return;
+        }
+
+        $url = false;
+        if ( isset( $_GET['fbclid'] ) ) {
+                $url = remove_query_arg( 'fbclid' ) . '#utm_medium=referral&utm_source=facebook.com&utm_content=social';
+        } elseif ( isset( $_GET['__twitter_impression'] ) ) {
+                $url = remove_query_arg( '__twitter_impression' ) . '#utm_medium=referral&utm_source=twitter.com&utm_content=social';
+        }
+
+        if ( $url ) {
+                wp_redirect( $url, 301 );
+                exit;
+        }
+
+}, 11 ); // After redirect_canonical();