As Gordon says, the Zend and PEAR standards are the effective industry standard.
However, the company's code quite possibly pre-dates these so depending on the size of the code base there may be little value in investing the time to make the move to one of these. (That said, if they ever want to use static code analysis tools you could possibly use this as an impetus to seriously consider moving to Zend, etc.)
However, being realistic, as long as they have a sensible standard that they stick to there's no real issue here - you'll find yourself adjusting how you "see" the code accordingly.
