定义和用法
PHP chmod() 函数改变文件模式。 如果成功则返回 TRUE,否则返回 FALSE。
语法
chmod(file,mode)可能的值(如需设置多个权限,请对下面的数字进行总计):
参数 | 描述 |
file | 必需。规定要检查的文件。 |
mode | 可选。规定新的权限。 mode 参数由 4 个数字组成: |
第一个数字永远是 0 | |
第二个数字规定所有者的权限 | |
第二个数字规定所有者所属的用户组的权限 | |
第四个数字规定其他所有人的权限 | |
1 - 执行权限 | |
2 - 写权限 | |
4 - 读权限 |
例子
// 所有者可读写,其他人没有任何权限 chmod("test.txt",0600);
// 所有者可读写,其他人可读 chmod("test.txt",0644);
// 所有者有所有权限,其他所有人可读和执行 chmod("test.txt",0755);
// 所有者有所有权限,所有者所在的组可读 chmod("test.txt",0740);
?>

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