从当前目录和子目录中检索所有文件

Question

I am trying to use the following function to retrieve all files in the folder and subfolder, not sure why it returns no result.

function listDirectory($path){
    $ret = array();
    function listFolderFiles($dir){
        global $ret;
        if (is_dir($dir) !== true) {
            return false;
        }
        $ffs = scandir($dir);
        unset($ffs[array_search('.', $ffs, true)]);
        unset($ffs[array_search('..', $ffs, true)]);

        foreach($ffs as $ff){
            $ret[] = $ff;
            if(is_dir($ff)) {
                listFolderFiles($dir.'/'.$ff);
            }
        }
        return $ret;
    }
    listFolderFiles($path);
    return $ret;
}

Answer 1

It returns null because the execution of code stops in here

if (count($ffs) < 1) {
    return;
}

This is mainly because you've might place a given $path value might be an empty [directory] meaning, no [files] or [directories] at all.

Your method listDirectory will return an array if the $path given is actually a directory that contains either a file or directory .

If you want, You can add another validation before you've called the scandir method first.

function listFolderFiles($dir) {
    global $ret;
    if (is_dir($dir) !== true) {
        return false;
    }

    $ffs = scandir($dir);
    // Rest of code
}

Hope this helps for your case.

Answer 2

Thank you very much for your help, sorted.

var_dump(listDirectory("../../../../wp-content/uploads/"));exit;
function listDirectory($path){
    //var_dump($path);exit;
    if(!file_exists ( $path)) {
        var_dump("File doesn't exist");exit;
    }
    $ret = array();
    function listFolderFiles($dir){
        global $ret;
        if (is_dir($dir) !== true) {
            return false;
        }
        $ffs = scandir($dir);
        unset($ffs[array_search('.', $ffs, true)]);
        unset($ffs[array_search('..', $ffs, true)]);
        foreach($ffs as $ff){
            if(is_dir($dir.'/'.$ff)) {
                listFolderFiles($dir.'/'.$ff);
            } else {
                $ret[] = $ff;
            }
        }
        return $ret;
    }
    return listFolderFiles($path);
}