PHP gets file directory list

Because we are traversing a certain folder, we must pass the address parameter $path of a file directory

function getDirList($path = '.') {    
    $allDirList = scandir($path);    
    foreach($allDirList as $key=>$val){        
        if (is_dir($path.$val) && $val!="." &&$val!="..") {            
            $filterDirList[] = $val;        
        }    
    }    
    return  $filterDirList;
}

The above method is to traverse the directories and files in each directory again through a foreach loop.

scandir method:

If successful, it will return an array containing the file name, if it fails, it will return FALSE. If directory is not a directory, a Boolean value of FALSE is returned and an E_WARNING level error is generated.