Even worse, some of the Internals teams argue in favor of silently trucking along instead of, e.g. throwing an exception: http://www.serverphorums.com/read.php?7,1250372
EDIT: because of HN's annoying "you are posting too fast" limit I cannot reply to the comment below.
The arguments against Exceptions began in the comments on the relevant pull request: https://github.com/php/php-src/pull/1397