php之readdir函数用法实例

$dir = "readdir/";
 
// 判断是否为目录
if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) !== false) {
            echo "filename: $file : filetype: " . filetype($dir . $file) . " ";
        }
        closedir($dh);
    }
}

if ($handle = opendir('/path/to/files')) {
    echo "Directory handle: $handle ";
    echo "Files: ";
 
    / 这是正确地遍历目录方法 /
    while (false !== ($file = readdir($handle))) {
        echo "$file ";
    }
 
    / 这是错误地遍历目录的方法 /
    while ($file = readdir($handle)) {
        echo "$file ";
    }
    closedir($handle);
}

if ($handle = opendir('.')) {
    while (false !== ($file = readdir($handle))) {
        if ($file != "." && $file != "..") {
            echo "$file ";
        }
    }
    closedir($handle);
}