php读取文件的三个方法

myglob(getcwd()."/*");

function mydir($dir){
    $d = dir($dir);
    while(($file = $d->read()) !== false){
        if($file != "." && $file != ".."){
            if(is_dir($dir.DIRECTORY_SEPARATOR.$file)){
                echo "目录：".$dir.DIRECTORY_SEPARATOR.$file."
";
                mydir($dir.DIRECTORY_SEPARATOR.$file);
            } else {
                echo "文件：".$dir.DIRECTORY_SEPARATOR.$file."
";
            }
        }
    }
    $d->close();
}

function myreaddir($dir){
    $hander = opendir($dir);
//    var_dump($hander);exit;
    if($hander){
        while(($file = readdir($hander)) != false){
            if($file != "." && $file != ".."){
                if(is_dir($dir.DIRECTORY_SEPARATOR.$file)){
                    echo "目录：".$dir.DIRECTORY_SEPARATOR.$file."
";
                    myreaddir($dir.DIRECTORY_SEPARATOR.$file.DIRECTORY_SEPARATOR);
                } else {
                    echo "文件：".$dir.$file."
";
                }
            }
        }
    }
    closedir($hander);
}

function myglob($dir){
//    print_r(g);exit;
    foreach(glob($dir) as $file){
        if($file != "." && $file != ".."){
//            echo $file."
";
            if(is_dir($file)){
               echo "目录：".$file."
";
               myglob($file."/*");
            } else {
                echo "文件：".$file."
";
            }
        }
    }
}