Ticket #52458: esc_url_type_safety.patch

src/wp-includes/formatting.php

@@ -4308 +4308 @@
 function esc_url( $url, $protocols = null, $_context = 'display' ) {
         $original_url = $url;
 
-        if ( '' === $url ) {
+        if ( '' === $url || "string" !== gettype( $url ) ) {
                 return $url;
         }