Ref/posix-Phpdoc专题

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

posix_access

Determine accessibility of a file

说明

bool posix_access ( string $filename [, int $flags = 0 ] )

posix_access checks the user's permission of a file.

参数

filename
The name of the file to be tested.

flags
A mask consisting of one or more of POSIX_F_OK, POSIX_R_OK, POSIX_W_OK and POSIX_X_OK.

POSIX_R_OK, POSIX_W_OK and POSIX_X_OK request checking whether the file exists and has read, write and execute permissions, respectively. POSIX_F_OK just requests checking for the existence of the file.

返回值

成功时返回 true，或者在失败时返回 false。

范例

示例 #1 posix_access example

This example will check if the $file is readable and writable, otherwise will print an error message.

<?php

$file = 'some_file';

if (posix_access($file, POSIX_R_OK | POSIX_W_OK)) {
    echo 'The file is readable and writable!';

} else {
    $error = posix_get_last_error();

    echo "Error $error: " . posix_strerror($error);
}

?>

注释

参见

posix_get_last_error
posix_strerror

posix_ctermid

Get path name of controlling terminal

说明

stringfalse posix_ctermid ( void )

Generates a string which is the pathname for the current controlling terminal for the process. On error this will set errno, which can be checked using posix_get_last_error

返回值

Upon successful completion, returns string of the pathname to the current controlling terminal. Otherwise false is returned and errno is set, which can be checked with posix_get_last_error.

范例

示例 #1 posix_ctermid example

This example will display the path to the current TTY.

<?php
echo "I am running from ".posix_ctermid();
?>

参见

posix_ttyname
posix_get_last_error

posix_errno

别名 posix_get_last_error

说明

此函数是该函数的别名： posix_get_last_error.

posix_get_last_error

Retrieve the error number set by the last posix function that failed

说明

int posix_get_last_error ( void )

Retrieve the error number set by the last posix function that failed. The system error message associated with the errno may be checked with posix_strerror.

返回值

Returns the errno (error number) set by the last posix function that failed. If no errors exist, 0 is returned.

范例

示例 #1 posix_get_last_error example

This example attempt to kill a bogus process id, which will set the last error. We will then print out the last errno.

<?php
posix_kill(999459,SIGKILL);
echo 'Your error returned was '.posix_get_last_error(); //Your error was ___
?>

参见

posix_strerror

posix_getcwd

Pathname of current directory

说明

stringfalse posix_getcwd ( void )

Gets the absolute pathname of the script's current working directory. On error, it sets errno which can be checked using posix_get_last_error

返回值

Returns a string of the absolute pathname on success. On error, returns false and sets errno which can be checked with posix_get_last_error.

范例

示例 #1 posix_getcwd example

This example will return the absolute path of the current working directory of the script.

<?php
echo 'My current working directory is '.posix_getcwd();
?>

注释

Note:

This function can fail on

Read or Search permission was denied

Pathname no longer exists

posix_getegid

Return the effective group ID of the current process

说明

int posix_getegid ( void )

Return the numeric effective group ID of the current process.

返回值

Returns an int of the effective group ID.

范例

示例 #1 posix_getegid example

This example will print out the effective group id, once it is changed with posix_setegid.

<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setegid(40);
echo 'My real group id is '.posix_getgid(); //20
echo 'My effective group id is '.posix_getegid(); //40
?>

注释

posix_getegid is different than posix_getgid because effective group ID can be changed by a calling process using posix_setegid.

参见

posix_getgrgid
posix_getgid
posix_setgid

posix_geteuid

Return the effective user ID of the current process

说明

int posix_geteuid ( void )

Return the numeric effective user ID of the current process. See also posix_getpwuid for information on how to convert this into a useable username.

返回值

Returns the user id, as an int

范例

示例 #1 posix_geteuid example

This example will show the current user id then set the effective user id to a separate id using posix_seteuid, then show the difference between the real id and the effective id.

<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_seteuid(10000);
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10000
?>

参见

posix_getpwuid
posix_getuid
posix_setuid
POSIX man page GETEUID(2)

posix_getgid

Return the real group ID of the current process

说明

int posix_getgid ( void )

Return the numeric real group ID of the current process.

返回值

Returns the real group id, as an int.

范例

示例 #1 posix_getgid example

This example will print out the real group id, even once the effective group id has been changed.

<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setegid(40);
echo 'My real group id is '.posix_getgid(); //20
echo 'My effective group id is '.posix_getegid(); //40
?>

参见

posix_getgrgid
posix_getegid
posix_setgid
POSIX man page GETGID(2)

posix_getgrgid

Return info about a group by group id

说明

arrayfalse posix_getgrgid ( int $group_id )

Gets information about a group provided its id.

参数

group_id
The group id.

返回值

The array elements returned are:

Element	Description
name	The name element contains the name of the group. This is a short, usually less than 16 character "handle" of the group, not the real, full name.
passwd	The passwd element contains the group's password in an encrypted format. Often, for example on a system employing "shadow" passwords, an asterisk is returned instead.
gid	Group ID, should be the same as the `group_id` parameter used when calling the function, and hence redundant.
members	This consists of an array of string's for all the members in the group.

The function returns false on failure.

范例

示例 #1 Example use of posix_getgrgid

<?php

$groupid   = posix_getegid();
$groupinfo = posix_getgrgid($groupid);

print_r($groupinfo);
?>

以上例程的输出类似于：

Array
(
    [name]    => toons
    [passwd]  => x
    [members] => Array
        (
            [0] => tom
            [1] => jerry
        )
    [gid]     => 42
)

参见

posix_getegid
posix_getgrnam
filegroup
stat
POSIX man page GETGRNAM(3)

posix_getgrnam

Return info about a group by name

说明

arrayfalse posix_getgrnam ( string $name )

Gets information about a group provided its name.

参数

name
The name of the group

返回值

Returns an array on success, 或者在失败时返回 false. The array elements returned are:

Element	Description
name	The name element contains the name of the group. This is a short, usually less than 16 character "handle" of the group, not the real, full name. This should be the same as the `name` parameter used when calling the function, and hence redundant.
passwd	The passwd element contains the group's password in an encrypted format. Often, for example on a system employing "shadow" passwords, an asterisk is returned instead.
gid	Group ID of the group in numeric form.
members	This consists of an array of string's for all the members in the group.

范例

示例 #1 Example use of posix_getgrnam

<?php

$groupinfo = posix_getgrnam("toons");

print_r($groupinfo);
?>

以上例程的输出类似于：

Array
(
    [name]    => toons
    [passwd]  => x
    [members] => Array
        (
            [0] => tom
            [1] => jerry
        )
    [gid]     => 42
)

参见

posix_getegid
posix_getgrgid
filegroup
stat
POSIX man page GETGRNAM(3)

posix_getgroups

Return the group set of the current process

说明

arrayfalse posix_getgroups ( void )

Gets the group set of the current process.

返回值

Returns an array of integers containing the numeric group ids of the group set of the current process, 或者在失败时返回 false.

范例

示例 #1 Example use of posix_getgroups

<?php

$groups = posix_getgroups();

print_r($groups);
?>

以上例程的输出类似于：

Array
(
    [0] => 4
    [1] => 20
    [2] => 24
    [3] => 25
    [4] => 29
    [5] => 30
    [6] => 33
    [7] => 44
    [8] => 46
    [9] => 104
    [10] => 109
    [11] => 110
    [12] => 1000
)

参见

posix_getgrgid

posix_getlogin

Return login name

说明

stringfalse posix_getlogin ( void )

Returns the login name of the user owning the current process.

返回值

Returns the login name of the user, as a string, 或者在失败时返回 false.

范例

示例 #1 Example use of posix_getlogin

<?php
echo posix_getlogin(); //apache
?>

参见

posix_getpwnam
POSIX man page GETLOGIN(3)

posix_getpgid

Get process group id for job control

说明

intfalse posix_getpgid ( int $process_id )

Returns the process group identifier of the process process_id 或者在失败时返回 false.

参数

process_id
The process id.

返回值

Returns the identifier, as an int.

范例

示例 #1 Example use of posix_getpgid

<?php
$pid = posix_getppid();
echo posix_getpgid($pid); //35
?>

注释

Note:

This is a not POSIX function, but is common on BSD and System V systems. If the system does not support this function, then it will not be included at compile time. This may be checked with function_exists.

参见

posix_getppid
man page SETPGID(2)

posix_getpgrp

Return the current process group identifier

说明

int posix_getpgrp ( void )

Return the process group identifier of the current process.

返回值

Returns the identifier, as an int.

参见

POSIX.1 and the getpgrp(2) manual page on the POSIX system for more information on process groups.

posix_getpid

返回当前进程 id

说明

int posix_getpid ( void )

Return the process identifier of the current process. 返回当前进程的 id

返回值

返回进程 id 号，是整型（integer）。

范例

示例 #1 posix_getpid 的使用例子

<?php
echo posix_getpid(); //8805
?>

参见

posix_kill
POSIX man page GETPID(2)

posix_getppid

Return the parent process identifier

说明

int posix_getppid ( void )

Return the process identifier of the parent process of the current process.

返回值

Returns the identifier, as an int.

范例

示例 #1 Example use of posix_getppid

<?php
echo posix_getppid(); //8259
?>

posix_getpwnam

Return info about a user by username

说明

arrayfalse posix_getpwnam ( string $username )

Returns an array of information about the given user.

参数

username
An alphanumeric username.

返回值

On success an array with the following elements is returned, else false is returned:

Element	Description
name	The name element contains the username of the user. This is a short, usually less than 16 character "handle" of the user, not the real, full name. This should be the same as the `username` parameter used when calling the function, and hence redundant.
passwd	The passwd element contains the user's password in an encrypted format. Often, for example on a system employing "shadow" passwords, an asterisk is returned instead.
uid	User ID of the user in numeric form.
gid	The group ID of the user. Use the function posix_getgrgid to resolve the group name and a list of its members.
gecos	GECOS is an obsolete term that refers to the finger information field on a Honeywell batch processing system. The field, however, lives on, and its contents have been formalized by POSIX. The field contains a comma separated list containing the user's full name, office phone, office number, and home phone number. On most systems, only the user's full name is available.
dir	This element contains the absolute path to the home directory of the user.
shell	The shell element contains the absolute path to the executable of the user's default shell.

范例

示例 #1 Example use of posix_getpwnam

<?php

$userinfo = posix_getpwnam("tom");

print_r($userinfo);
?>

以上例程的输出类似于：

Array
(
    [name]    => tom
    [passwd]  => x
    [uid]     => 10000
    [gid]     => 42
    [gecos]   => "tom,,,"
    [dir]     => "/home/tom"
    [shell]   => "/bin/bash"
)

参见

posix_getpwuid
POSIX man page GETPWNAM(3)

posix_getpwuid

Return info about a user by user id

说明

arrayfalse posix_getpwuid ( int $user_id )

Returns an array of information about the user referenced by the given user ID.

参数

user_id
The user identifier.

返回值

Returns an associative array with the following elements:

Element	Description
name	The name element contains the username of the user. This is a short, usually less than 16 character "handle" of the user, not the real, full name.
passwd	The passwd element contains the user's password in an encrypted format. Often, for example on a system employing "shadow" passwords, an asterisk is returned instead.
uid	User ID, should be the same as the `user_id` parameter used when calling the function, and hence redundant.
gid	The group ID of the user. Use the function posix_getgrgid to resolve the group name and a list of its members.
gecos	GECOS is an obsolete term that refers to the finger information field on a Honeywell batch processing system. The field, however, lives on, and its contents have been formalized by POSIX. The field contains a comma separated list containing the user's full name, office phone, office number, and home phone number. On most systems, only the user's full name is available.
dir	This element contains the absolute path to the home directory of the user.
shell	The shell element contains the absolute path to the executable of the user's default shell.

The function returns false on failure.

范例

示例 #1 Example use of posix_getpwuid

<?php

$userinfo = posix_getpwuid(10000);

print_r($userinfo);
?>

以上例程的输出类似于：

Array
(
    [name]    => tom
    [passwd]  => x
    [uid]     => 10000
    [gid]     => 42
    [gecos]   => "tom,,,"
    [dir]     => "/home/tom"
    [shell]   => "/bin/bash"
)

参见

posix_getpwnam
POSIX man page GETPWNAM(3)

posix_getrlimit

Return info about system resource limits

说明

arrayfalse posix_getrlimit ( void )

posix_getrlimit returns an array of information about the current resource's soft and hard limits.

Each resource has an associated soft and hard limit. The soft limit is the value that the kernel enforces for the corresponding resource. The hard limit acts as a ceiling for the soft limit. An unprivileged process may only set its soft limit to a value from 0 to the hard limit, and irreversibly lower its hard limit.

返回值

Returns an associative array of elements for each limit that is defined. Each limit has a soft and a hard limit.

Limit name	Limit description
core	The maximum size of the core file. When 0, not core files are created. When core files are larger than this size, they will be truncated at this size.
totalmem	The maximum size of the memory of the process, in bytes.
virtualmem	The maximum size of the virtual memory for the process, in bytes.
data	The maximum size of the data segment for the process, in bytes.
stack	The maximum size of the process stack, in bytes.
rss	The maximum number of virtual pages resident in RAM
maxproc	The maximum number of processes that can be created for the real user ID of the calling process.
memlock	The maximum number of bytes of memory that may be locked into RAM.
cpu	The amount of time the process is allowed to use the CPU.
filesize	The maximum size of the data segment for the process, in bytes.
openfiles	One more than the maximum number of open file descriptors.

The function returns false on failure.

范例

示例 #1 Example use of posix_getrlimit

<?php

$limits = posix_getrlimit();

print_r($limits);
?>

以上例程的输出类似于：

Array
(
    [soft core] => 0
    [hard core] => unlimited
    [soft data] => unlimited
    [hard data] => unlimited
    [soft stack] => 8388608
    [hard stack] => unlimited
    [soft totalmem] => unlimited
    [hard totalmem] => unlimited
    [soft rss] => unlimited
    [hard rss] => unlimited
    [soft maxproc] => unlimited
    [hard maxproc] => unlimited
    [soft memlock] => unlimited
    [hard memlock] => unlimited
    [soft cpu] => unlimited
    [hard cpu] => unlimited
    [soft filesize] => unlimited
    [hard filesize] => unlimited
    [soft openfiles] => 1024
    [hard openfiles] => 1024
)

参见

man page GETRLIMIT(2)
posix_setrlimit

posix_getsid

Get the current sid of the process

说明

intfalse posix_getsid ( int $process_id )

Return the session id of the process process_id. The session id of a process is the process group id of the session leader.

参数

process_id
The process identifier. If set to 0, the current process is assumed. If an invalid process_id is specified, then false is returned and an error is set which can be checked with posix_get_last_error.

返回值

Returns the identifier, as an int, 或者在失败时返回 false.

范例

示例 #1 Example use of posix_getsid

<?php
$pid = posix_getpid();
echo posix_getsid($pid); //8805
?>

参见

posix_getpgid
posix_setsid
POSIX man page GETSID(2)

posix_getuid

Return the real user ID of the current process

说明

int posix_getuid ( void )

Return the numeric real user ID of the current process.

返回值

Returns the user id, as an int

范例

示例 #1 Example use of posix_getuid

<?php
echo posix_getuid(); //10000
?>

参见

posix_getpwuid
POSIX man page GETUID(2)

posix_initgroups

Calculate the group access list

说明

bool posix_initgroups ( string $username , int $group_id )

Calculates the group access list for the user specified in name.

参数

username
The user to calculate the list for.

group_id
Typically the group number from the password file.

返回值

成功时返回 true，或者在失败时返回 false。

参见

The Unix manual page for initgroups(3).

posix_isatty

Determine if a file descriptor is an interactive terminal

说明

bool posix_isatty ( resourceint $file_descriptor )

Determines if the file descriptor file_descriptor refers to a valid terminal type device.

参数

fd
The file descriptor, which is expected to be either a file resource or an int. An int will be assumed to be a file descriptor that can be passed directly to the underlying system call.

In almost all cases, you will want to provide a file resource.

返回值

Returns true if file_descriptor is an open descriptor connected to a terminal and false otherwise.

参见

posix_ttyname
stream_isatty

posix_kill

Send a signal to a process

说明

bool posix_kill ( int $process_id , int $signal )

Send the signal signal to the process with the process identifier process_id.

参数

process_id
The process identifier.

signal
One of the PCNTL signals constants.

返回值

成功时返回 true，或者在失败时返回 false。

参见

The kill(2) manual page of the POSIX system, which contains additional information about negative process identifiers, the special pid 0, the special pid -1, and the signal number 0.

posix_mkfifo

Create a fifo special file (a named pipe)

说明

bool posix_mkfifo ( string $filename , int $permissions )

posix_mkfifo creates a special FIFO file which exists in the file system and acts as a bidirectional communication endpoint for processes.

参数

filename
Path to the FIFO file.

permissions
The second parameter permissions has to be given in octal notation (e.g. 0644). The permission of the newly created FIFO also depends on the setting of the current umask. The permissions of the created file are (mode & ~umask).

返回值

成功时返回 true，或者在失败时返回 false。

posix_mknod

Create a special or ordinary file (POSIX.1)

说明

bool posix_mknod ( string $filename , int $flags [, int $major = 0 [, int $minor = 0 ]] )

Creates a special or ordinary file.

参数

filename
The file to create

flags
This parameter is constructed by a bitwise OR between file type (one of the following constants: POSIX_S_IFREG, POSIX_S_IFCHR, POSIX_S_IFBLK, POSIX_S_IFIFO or POSIX_S_IFSOCK) and permissions.

major
The major device kernel identifier (required to pass when using S_IFCHR or S_IFBLK).

minor
The minor device kernel identifier.

返回值

成功时返回 true，或者在失败时返回 false。

范例

示例 #1 A posix_mknod example

<?php

$file = '/tmp/tmpfile';  // file name
$type = POSIX_S_IFBLK;   // file type
$permissions = 0777;     // octal
$major = 1;
$minor = 8;              // /dev/random

if (!posix_mknod($file, $type | $permissions, $major, $minor)) {
    die('Error ' . posix_get_last_error() . ': ' . posix_strerror(posix_get_last_error()));
}

?>

参见

posix_mkfifo

posix_setegid

Set the effective GID of the current process

说明

bool posix_setegid ( int $group_id )

Set the effective group ID of the current process. This is a privileged function and needs appropriate privileges (usually root) on the system to be able to perform this function.

参数

group_id
The group id.

返回值

成功时返回 true，或者在失败时返回 false。

范例

示例 #1 posix_setegid example

This example will print out the effective group id, once changed.

<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setegid(40);
echo 'My real group id is '.posix_getgid(); //20
echo 'My effective group id is '.posix_getegid(); //40
?>

参见

posix_getgrgid
posix_getgid
posix_setgid

posix_seteuid

Set the effective UID of the current process

说明

bool posix_seteuid ( int $user_id )

Set the effective user ID of the current process. This is a privileged function and needs appropriate privileges (usually root) on the system to be able to perform this function.

参数

user_id
The user id.

返回值

成功时返回 true，或者在失败时返回 false。

参见

posix_geteuid
posix_setuid
posix_getuid

posix_setgid

Set the GID of the current process

说明

bool posix_setgid ( int $group_id )

Set the real group ID of the current process. This is a privileged function and needs appropriate privileges (usually root) on the system to be able to perform this function. The appropriate order of function calls is posix_setgid first, posix_setuid last.

Note:

If the caller is a super user, this will also set the effective group id.

参数

group_id
The group id.

返回值

成功时返回 true，或者在失败时返回 false。

范例

示例 #1 posix_setgid example

This example will print out the effective group id, once it is changed.

<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setgid(40);
echo 'My real group id is '.posix_getgid(); //40
echo 'My effective group id is '.posix_getegid(); //40
?>

参见

posix_getgrgid
posix_getgid

posix_setpgid

Set process group id for job control

说明

bool posix_setpgid ( int $process_id , int $process_group_id )

Let the process process_id join the process group process_group_id.

参数

process_id
The process id.

process_group_id
The process group id.

返回值

成功时返回 true，或者在失败时返回 false。

参见

See POSIX.1 and the setsid(2) manual page on the POSIX system for more information on process groups and job control.

posix_setrlimit

Set system resource limits

说明

bool posix_setrlimit ( int $resource , int $soft_limit , int $hard_limit )

posix_setrlimit sets the soft and hard limits for a given system resource.

参数

resource
The resource limit constant corresponding to the limit that is being set.

soft_limit
The soft limit, in whatever unit the resource limit requires, or POSIX_RLIMIT_INFINITY.

hard_limit
The hard limit, in whatever unit the resource limit requires, or POSIX_RLIMIT_INFINITY.

返回值

成功时返回 true，或者在失败时返回 false。

参见

man page SETRLIMIT(2)
posix_getrlimit

posix_setsid

Make the current process a session leader

说明

int posix_setsid ( void )

Make the current process a session leader.

返回值

Returns the session id, or -1 on errors.

参见

The POSIX.1 and the setsid(2) manual page on the POSIX system for more information on process groups and job control.

posix_setuid

Set the UID of the current process

说明

bool posix_setuid ( int $user_id )

Set the real user ID of the current process. This is a privileged function that needs appropriate privileges (usually root) on the system to be able to perform this function.

参数

user_id
The user id.

返回值

成功时返回 true，或者在失败时返回 false。

范例

示例 #1 posix_setuid example

This example will show the current user id and then set it to a different value.

<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_setuid(10000);
echo posix_getuid()."\n"; //10000
echo posix_geteuid()."\n"; //10000
?>

参见

posix_setgid
posix_seteuid
posix_getuid
posix_geteuid

posix_strerror

Retrieve the system error message associated with the given errno

说明

string posix_strerror ( int $error_code )

Returns the POSIX system error message associated with the given error_code. You may get the error_code parameter by calling posix_get_last_error.

参数

error_code
A POSIX error number, returned by posix_get_last_error. If set to 0, then the string "Success" is returned.

返回值

Returns the error message, as a string.

范例

示例 #1 posix_strerror example

This example will attempt to kill a process which does not exist, then will print out the corresponding error message.

<?php
posix_kill(50,SIGKILL);
echo posix_strerror(posix_get_last_error())."\n";
?>

以上例程的输出类似于：

No such process

参见

posix_get_last_error

posix_times

Get process times

说明

arrayfalse posix_times ( void )

Gets information about the current CPU usage.

返回值

Returns a hash of strings with information about the current process CPU usage. The indices of the hash are:

ticks - the number of clock ticks that have elapsed since reboot.
utime - user time used by the current process.
stime - system time used by the current process.
cutime - user time used by current process and children.
cstime - system time used by current process and children.

The function returns false on failure.

注释

Warning

This function isn't reliable to use, it may return negative values for high times.

范例

示例 #1 Example use of posix_times

<?php

$times = posix_times();

print_r($times);
?>

以上例程的输出类似于：

Array
(
    [ticks] => 25814410
    [utime] => 1
    [stime] => 1
    [cutime] => 0
    [cstime] => 0
)

posix_ttyname

Determine terminal device name

说明

stringfalse posix_ttyname ( resourceint $file_descriptor )

Returns a string for the absolute path to the current terminal device that is open on the file descriptor file_descriptor.

参数

In almost all cases, you will want to provide a file resource.

返回值

On success, returns a string of the absolute path of the file_descriptor. On failure, returns false

posix_uname

Get system name

说明

arrayfalse posix_uname ( void )

Gets information about the system.

Posix requires that assumptions must not be made about the format of the values, e.g. the assumption that a release may contain three digits or anything else returned by this function.

返回值

Returns a hash of strings with information about the system. The indices of the hash are

sysname - operating system name (e.g. Linux)
nodename - system name (e.g. valiant)
release - operating system release (e.g. 2.2.10)
version - operating system version (e.g. #4 Tue Jul 20 17:01:36 MEST 1999)
machine - system architecture (e.g. i586)
domainname - DNS domainname (e.g. example.com)

domainname is a GNU extension and not part of POSIX.1, so this field is only available on GNU systems or when using the GNU libc.

The function returns false on failure.

范例

示例 #1 Example use of posix_uname

<?php
$uname=posix_uname();
print_r($uname);
?>

以上例程的输出类似于：

Array
(
    [sysname] => Linux
    [nodename] => funbox
    [release] => 2.6.20-15-server
    [version] => #2 SMP Sun Apr 15 07:41:34 UTC 2007
    [machine] => i686
)

posix_access — Determine accessibility of a file
posix_ctermid — Get path name of controlling terminal
posix_errno — 别名 posix_get_last_error
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 — 返回当前进程 id
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_initgroups — Calculate the group access list
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_mknod — Create a special or ordinary file (POSIX.1)
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_setrlimit — Set system resource limits
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