Will i have to file a pennsylvania state tax if i lived in maryland and worked in pennsylvania

[ee-ea]

You do not have to file PA.

[TomD8]

You do not have to file in PA unless you had income from PA other than W-2 salary or wages or your employer mistakenly withheld PA taxes from your pay.

[Hal_Al]

You do not have to file in PA unless your employer mistakenly withheld PA state tax from your pay (PA in box 15 of your W-2 and an amount in box 17).  

However the reciprocity agreement, between PA and MD,  does not apply to local city taxes. You are not required to file a PA city return, but you are also not entitled to a refund of the city withholding (box19 on your W-2), unless there was an error in the amount (highly unusual).