conversion value -> binary
conversion value -> binary

fixes https://github.com/peachpiecompiler/peachpie/issues/565#issuecomment-557527693

iolevel/peachpie-concept,iolevel/peachpie-concept,iolevel/peachpie,peachpiecompiler/peachpie,peachpiecompiler/peachpie,iolevel/peachpie,peachpiecompiler/peachpie,iolevel/peachpie,iolevel/peachpie-concept