<Li> emx + gcc--largely POSIX compliant </Li> <P> Partially POSIX compliant environments for DOS include: </P> <Ul> <Li> emx + gcc--largely POSIX compliant </Li> <Li> DJGPP--partially POSIX compliant </Li> <Li> DR - DOS multitasking core via EMM386 / MULTI--a POSIX threads frontend API extension is available </Li> </Ul> <Li> emx + gcc--largely POSIX compliant </Li>

Posix implementation was deprecated in which version of php