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# opendir

(PHP 3, PHP 4 , PHP 5)

opendir -- Open directory handle

## Description

resource opendir ( string path )

Returns a directory handle to be used in subsequent closedir(), readdir(), and rewinddir() calls.

If path is not a valid directory or the directory can not be opened due to permission restrictions or filesystem errors, opendir() returns `FALSE` and generates a PHP error of level E_WARNING. You can suppress the error output of opendir() by prepending '@' to the front of the function name.

範例 1. opendir() example
`<?php $dir = "/etc/php5/"; // Open a known directory, and proceed to read its contents if (is_dir($dir)) { if ($dh = opendir($dir)) { while (($file = readdir($dh)) !== false) { echo "filename: $file : filetype: " . filetype($dir . $file) . "\n"; } closedir($dh); } } ?>`
The above example will output something similar to:
    filename: . : filetype: dir
    filename: .. : filetype: dir
    filename: apache : filetype: dir
    filename: cgi : filetype: dir
    filename: cli : filetype: dir

As of PHP 4.3.0 path can also be any URL which supports directory listing, however only the file:// URL wrapper supports this in PHP 4.3. As of PHP 5.0.0, support for the ftp:// URL wrapper is included as well.

See also is_dir(), readdir(), and Dir

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