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Homephp教程php手册PHP中is_dir()函数使用指南

php提供内置函数is_dir来检查传入的路径参数是否为目录,如果是目录则返回true。也就是说传入的参数是文件或者不存在都为false,因此当前参数不能说不是文件夹就

函数:is_dir()

功能:判断给定文件名是否是一个目录

说明:
bool is_dir ( string $filename )

如果文件名存在并且为目录则返回 TRUE。
如果 filename 是一个相对路径,则按照当前工作目录检查其相对路径。

注: 本函数的结果会被缓存。更多信息参见 clearstatcache()。

例子1

上例将输出:

bool(false)
bool(false)
bool(true)

例子2

输出:
如果存在images这个目录,,则输出:
images is a directory

以上所述就是本文的全部内容了,希望大家能够喜欢。

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