老生常谈PHP位运算的用途 ... $a=$key & mWRITE; echo “有写权限 “.$a; //无此权限 if($key & mREAD) echo “有读权限 ...
基于2个网页-相关网页
对于拥有者读的权限 stat.S_IREAD Read by owner ; stat.S_IRUSR Read by owner
为所有用户分配读权限 chmod r file
认证后有读的权限 auth-access write
所有组权限读 groupr
r：用户对有读权限。
用户 tom 的主目录有执行权限，但是没有读权限，所以用户 ian 不能列出内容，但是如果知道对象存在，就可以访问目录下的对象。
User tom's home has execute but not read permission, so user ian cannot list the contents, but can access objects within the directory if he knows they exist.
信息可以是私有的，您可以有选择地让其他应用程序对之具有读或写的访问权限。
The information can be private, and you have the option of letting other applications have read or write access to it.
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