How to traverse and delete directories in php

How to traverse and delete a directory in php: first create a PHP sample file; then use the "function del_dir($dir) {...}" method to traverse and delete the directory and all files in the directory.

#The operating environment of this article: Windows7 system, PHP7.1, Dell G3 computer.

PHP traverses and deletes the directory and all files in the directory

Code

function del_dir($dir) {
    if (!is_dir($dir)) {
        return false;
    }
    $handle = opendir($dir);
    while (($file = readdir($handle)) !== false) {
        if ($file != "." && $file != "..") {
            is_dir("$dir/$file") ? del_dir("$dir/$file") : @unlink("$dir/$file");
        }
    }
    if (readdir($handle) == false) {
        closedir($handle);
        @rmdir($dir);
    }
}

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