posix_getgrgid Return info about a group by group id php函数


(PHP 4, PHP 5)

posix_getgrgidReturn info about a group by group id


array posix_getgrgid ( int $gid )

Gets information about a group provided its id.



The group id.


The array elements returned are:

The group information array
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 gid 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.


版本 说明
4.2.0 Prior to this version, members was simply an integer representing the number of members in the group, and the member names were returned with numerical indices.


Example #1 Example use of posix_getgrgid()


$groupinfo posix_getgrgid($groupid);



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


  • posix_getegid() - Return the effective group ID of the current process
  • posix_getgrnam() - Return info about a group by name
  • filegroup() - 取得文件的组
  • stat() - 给出文件的信息
  • safe_mode_gid
  • POSIX man page GETGRNAM(3)

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_get_last_error Retrieve the error number set by the last posix function that failed
posix_initgroups Calculate the group access list

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