Are there potential pitfalls to be aware of when using readdir in PHP to read directories?

One potential pitfall when using readdir in PHP to read directories is that it may return unwanted results, such as hidden files or directories. To avoid this, you can use the is_dir() function to check if the file is a directory before processing it. 

$dir = "/path/to/directory";
$dh = opendir($dir);

while (($file = readdir($dh)) !== false) {
    if ($file != "." && $file != "..") {
        if (is_dir($dir . "/" . $file)) {
            // Process directory
        } else {
            // Process file
        }
    }
}

closedir($dh);

Keywords

readdir PHP directories pitfalls error types

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