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posix_setgid

posix_setgid

(PHP 4, PHP 5)

posix_setgidSet the GID of the current process

说明

bool posix_setgid ( int $gid )

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

gid

The group id.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE.

范例

Example #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_access
  • posix_ctermid
  • posix_errno
  • posix_getcwd
  • posix_getegid
  • posix_geteuid
  • posix_getgid
  • posix_getgrgid
  • posix_getgrnam
  • posix_getgroups
  • posix_getlogin
  • posix_getpgid
  • posix_getpgrp
  • posix_getpid
  • posix_getppid
  • posix_getpwnam
  • posix_getpwuid
  • posix_getrlimit
  • posix_getsid
  • posix_getuid
  • posix_get_last_error
  • posix_initgroups
  • posix_isatty
  • posix_kill
  • posix_mkfifo
  • posix_mknod
  • posix_setegid
  • posix_seteuid
  • posix_setgid
  • posix_setpgid
  • posix_setsid
  • posix_setuid
  • posix_strerror
  • posix_times
  • posix_ttyname
  • posix_uname
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