The general conditions of probation in Pennsylvania would be to, put simply, be a productive member of society and not get into any further trouble. An offender, someone who's being supervised on probation is expected to not incur any new arrests. They can't get into any further trouble. Any police contact would have to be reported to the probation officer. They'd have to maintain employment. If they're not working, they'd have to seek employment, make diligent efforts to find employment. As needed, they would have to provide clean drug screens if the person struggles with some kind of issue. Or if there was, say, depending on the nature of the case, if it's a DUI or drug related case, they may have to take alcohol highway safety school or safe driving classes, outpatient treatment, outpatient dependency treatment, that is they'd have to report to their probation officer as instructed.
They'd also, in most respects, if not all, arguably comply with the instructions of their probation officer. That being said, sometimes probation officers can go too far in certain respects, but that's a separate consideration. Overall, a person on probation is supposed to be compliant with the probation officer's expectations.
Probation can be a serious issue if you're accused of violating probation. Having an experienced Pennsylvania criminal defense attorney will help you best understand what your obligations are and also, as importantly, what your rights are. They should be involved as early as possible if you have any kind of probation issue or concern.