php ftp判断文件夹是否存在

<?php
$ftp_server = "ftp.example.com";
$ftp_user = "username";
$ftp_pass = "password";

// 连接到FTP服务器
$conn_id = ftp_connect($ftp_server) or die("Couldn't connect to $ftp_server");

// 登录到FTP服务器
if (@ftp_login($conn_id, $ftp_user, $ftp_pass)) {
    echo "Connected as $ftp_user@$ftp_server\n";

    // 目标文件夹路径
    $dir_to_check = "/path/to/directory";

    // 获取FTP服务器上的目录列表
    $dir_list = ftp_nlist($conn_id, ".");

    // 检查目标文件夹是否在列表中
    if (in_array($dir_to_check, $dir_list)) {
        echo "Directory $dir_to_check exists.\n";
    } else {
        echo "Directory $dir_to_check does not exist.\n";
    }

    // 关闭FTP连接
    ftp_close($conn_id);
} else {
    echo "Couldn't connect as $ftp_user\n";
}
?>