posix_access constants
posix_setrlimit constants
Predefined Constants
PHP Manual

## posix_mknod() constants

> Note:

> These constants are available starting with PHP 5.1.0. Please note that some of them may not be available on your system.

`POSIX_S_IFBLK` (integer)
  Block special file
`POSIX_S_IFCHR` (integer)
  Character special file
`POSIX_S_IFIFO` (integer)
  FIFO (named pipe) special file
`POSIX_S_IFREG` (integer)
  Normal file
`POSIX_S_IFSOCK` (integer)
  Socket

posix_access constants
posix_setrlimit constants
Predefined Constants
PHP Manual