(PHP 4, PHP 5)
is_dir — Tells whether the filename is a directory
Tells whether the given filename is a directory.
Path to the file. If filename is a relative filename, it will be checked relative to the current working directory.
Returns TRUE if the filename exists and is a directory, FALSE otherwise.
Example#1 is_dir() example
<?php
var_dump(is_dir('a_file.txt')) . "\n";
var_dump(is_dir('bogus_dir/abc')) . "\n";
var_dump(is_dir('..')); //one dir up
?>
上例將輸出:
bool(false) bool(false) bool(true)
Note: 本函式的結果會被存入緩衝區。詳情參見 clearstatcache()。
自 PHP 5.0.0 起本函式也可被某些 URL wrapper 使用。參考List of Supported Protocols/Wrappers 來看哪些 wrapper 支援 stat() 系列函式的功能。