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# posix_setegid

(PHP 4 >= 4.0.2, PHP 5)

posix_setegid -- Set the effective GID of the current process

## Description

bool posix_setegid ( int gid)

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

成功回傳`TRUE`失敗回傳`FALSE`。

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