循环创建目录方法

$fileRedictory = 'a/b/c/d/e/f/g';
    if(!is_dir($fileRedictory)){
        $find = explode('/', $fileRedictory);
        $newdir = '';
        foreach($find as $k=>$v){
            $newdir .= $k==0?$v:'/'.$v;
            if(!is_dir($newdir)){
                mkdir($newdir);
            }
        }
    }