use is_int instead of is_numeric if we want to reject numeric strings, should fix #681

core/polyfills.php

@@ -503,7 +503,7 @@ function bool_escape($input): bool
     */
     if (is_bool($input)) {
         return $input;
-    } elseif (is_numeric($input)) {
+    } elseif (is_int($input)) {
         return ($input === 1);
     } else {
         $value = filter_var($input, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);