<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>POSIX Functions</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="posix.constants.html">Predefined Constants</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.posix-access.html">posix_access</a></div> <div class="up"><a href="book.posix.html">POSIX</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="ref.posix" class="reference"> <h1 class="title">POSIX Functions</h1> <div class="partintro"> <h1 class="title">See Also</h1> <p class="para"> The section about <a href="book.pcntl.html" class="link">Process Control Functions</a> maybe of interest for you. </p> </div> <h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="function.posix-access.html">posix_access</a> — Determine accessibility of a file</li><li><a href="function.posix-ctermid.html">posix_ctermid</a> — Get path name of controlling terminal</li><li><a href="function.posix-errno.html">posix_errno</a> — Alias of posix_get_last_error</li><li><a href="function.posix-get-last-error.html">posix_get_last_error</a> — Retrieve the error number set by the last posix function that failed</li><li><a href="function.posix-getcwd.html">posix_getcwd</a> — Pathname of current directory</li><li><a href="function.posix-getegid.html">posix_getegid</a> — Return the effective group ID of the current process</li><li><a href="function.posix-geteuid.html">posix_geteuid</a> — Return the effective user ID of the current process</li><li><a href="function.posix-getgid.html">posix_getgid</a> — Return the real group ID of the current process</li><li><a href="function.posix-getgrgid.html">posix_getgrgid</a> — Return info about a group by group id</li><li><a href="function.posix-getgrnam.html">posix_getgrnam</a> — Return info about a group by name</li><li><a href="function.posix-getgroups.html">posix_getgroups</a> — Return the group set of the current process</li><li><a href="function.posix-getlogin.html">posix_getlogin</a> — Return login name</li><li><a href="function.posix-getpgid.html">posix_getpgid</a> — Get process group id for job control</li><li><a href="function.posix-getpgrp.html">posix_getpgrp</a> — Return the current process group identifier</li><li><a href="function.posix-getpid.html">posix_getpid</a> — Return the current process identifier</li><li><a href="function.posix-getppid.html">posix_getppid</a> — Return the parent process identifier</li><li><a href="function.posix-getpwnam.html">posix_getpwnam</a> — Return info about a user by username</li><li><a href="function.posix-getpwuid.html">posix_getpwuid</a> — Return info about a user by user id</li><li><a href="function.posix-getrlimit.html">posix_getrlimit</a> — Return info about system resource limits</li><li><a href="function.posix-getsid.html">posix_getsid</a> — Get the current sid of the process</li><li><a href="function.posix-getuid.html">posix_getuid</a> — Return the real user ID of the current process</li><li><a href="function.posix-initgroups.html">posix_initgroups</a> — Calculate the group access list</li><li><a href="function.posix-isatty.html">posix_isatty</a> — Determine if a file descriptor is an interactive terminal</li><li><a href="function.posix-kill.html">posix_kill</a> — Send a signal to a process</li><li><a href="function.posix-mkfifo.html">posix_mkfifo</a> — Create a fifo special file (a named pipe)</li><li><a href="function.posix-mknod.html">posix_mknod</a> — Create a special or ordinary file (POSIX.1)</li><li><a href="function.posix-setegid.html">posix_setegid</a> — Set the effective GID of the current process</li><li><a href="function.posix-seteuid.html">posix_seteuid</a> — Set the effective UID of the current process</li><li><a href="function.posix-setgid.html">posix_setgid</a> — Set the GID of the current process</li><li><a href="function.posix-setpgid.html">posix_setpgid</a> — Set process group id for job control</li><li><a href="function.posix-setsid.html">posix_setsid</a> — Make the current process a session leader</li><li><a href="function.posix-setuid.html">posix_setuid</a> — Set the UID of the current process</li><li><a href="function.posix-strerror.html">posix_strerror</a> — Retrieve the system error message associated with the given errno</li><li><a href="function.posix-times.html">posix_times</a> — Get process times</li><li><a href="function.posix-ttyname.html">posix_ttyname</a> — Determine terminal device name</li><li><a href="function.posix-uname.html">posix_uname</a> — Get system name</li></ul> </div> <hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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