posix_setegid

(PHP 4 >= 4.0.2, PHP 5)

posix_setegid — Set the effective GID of the current process

说明

bool posix_setegid ( int $gid )

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

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_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() - Return info about a group by group id
posix_getgid() - Return the real group ID of the current process
posix_setgid() - Set the GID of the current process