   #PHP Manual Function Reference zend_version posix_ctermid

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LXXXII. POSIX functions

Introduction

   This module contains an interface to those functions defined in the
   IEEE 1003.1 (POSIX.1) standards document which are not accessible
   through other means. POSIX.1 for example defined the open(), read(),
   write() and close() functions, too, which traditionally have been part
   of PHP 3 for a long time. Some more system specific functions have not
   been available before, though, and this module tries to remedy this by
   providing easy access to these functions.

   Warning

   Sensitive data can be retrieved with the POSIX functions, e.g.
   posix_getpwnam() and friends. None of the POSIX function perform any
   kind of access checking when safe mode is enabled. It's therefore
   strongly advised to disable the POSIX extension at all (use
   --disable-posix in your configure line) if you're operating in such an
   environment.

     Note: This extension is not available on Windows platforms.

Installation

   POSIX functions are enabled by default. You can disable POSIX-like
   functions with --disable-posix.

See Also

   The section about Process Control Functions maybe of interest for you.

   Table of Contents
   posix_ctermid -- Get path name of controlling terminal
   posix_get_last_error --  Retrieve the error number set by the last
          posix function that failed.

   posix_getcwd -- Pathname of current directory
   posix_getegid --  Return the effective group ID of the current process

   posix_geteuid --  Return the effective user ID of the current process
   posix_getgid --  Return the real group ID of the current process
   posix_getgrgid -- Return info about a group by group id
   posix_getgrnam -- Return info about a group by name
   posix_getgroups --  Return the group set of the current process
   posix_getlogin -- Return login name
   posix_getpgid -- Get process group id for job control
   posix_getpgrp --  Return the current process group identifier
   posix_getpid -- Return the current process identifier
   posix_getppid -- Return the parent process identifier
   posix_getpwnam -- Return info about a user by username
   posix_getpwuid -- Return info about a user by user id
   posix_getrlimit -- Return info about system resource limits
   posix_getsid -- Get the current sid of the process
   posix_getuid --  Return the real user ID of the current process
   posix_isatty --  Determine if a file descriptor is an interactive
          terminal

   posix_kill -- Send a signal to a process
   posix_mkfifo --  Create a fifo special file (a named pipe)
   posix_setegid --  Set the effective GID of the current process
   posix_seteuid --  Set the effective UID of the current process
   posix_setgid --  Set the GID of the current process
   posix_setpgid -- set process group id for job control
   posix_setsid -- Make the current process a session leader
   posix_setuid --  Set the UID of the current process
   posix_strerror --  Retrieve the system error message associated with
          the given errno.

   posix_times -- Get process times
   posix_ttyname -- Determine terminal device name
   posix_uname -- Get system name
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