- Patch #8973 by JonBob: Drupal contains many undefined variables and array indices, which makes PHP throw a lot of warnings when the reporting level is set to E_ALL. Things run fine with these warnings, but as a matter of code style if nothing else we should probably strive to avoid them. The attached fixes most of the more egregious offenders (about 95% of the warnings when I load /node on my test site).