# posix_initgroups

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

posix_initgroups — Calculate the group access list

### 说明

posix_initgroups(string `$username`, int `$group_id`): bool

Calculates the group access list for the user specified in name.

### 参数

`username`

  The user to calculate the list for.

`group_id`

  Typically the group number from the password file.

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

### 参见

- The Unix manual page for initgroups(3).

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