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php umask 函数教程

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Release： 2016-06-13 11:17:28
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php umask 函数教程  

umask值
（ PHP 4中， PHP 5中）

的umask -改变了当前的umask

描述
诠释的umask （ [国际$遮罩] ）
的umask （ ）设置PHP的umask值，以掩盖和0777并返回旧的umask 。当PHP被用作服务器模块， umask被恢复时，每个请求完成。

参数

遮罩
新的umask 。


返回值
umask值（ ）不带参数只返回当前的umask否则旧的umask被退还。

实例

例如＃ 1的umask （ ）的例子

$old = umask(0);
chmod("/path/some_dir/some_file.txt", 0755);
umask($old);

// Checking
if ($old != umask()) {
    die('An error occured while changing back the umask');
}
?>


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