posix_setgid()

(PHP 4, PHP 5, PHP 7)

Set the GID of the current process

说明

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 isposix_setgid()first,posix_setuid() last.

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

参数

The group id.

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

posix_setgid()example

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

参见

• posix_getgrgid()Return info about a group by group id
• posix_getgid()Return the real group ID of the current process

if you're going to use this along with posix_setuid, make sure you call posix_setgid first:

following works:

following will not set gid