php ftp目录是否存在

<?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);

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

    // 获取目录列表
    $dir_list = ftp_nlist($conn_id, ".");

    // 检查目标目录是否存在
    $target_dir = "target_directory";
    if (in_array($target_dir, $dir_list)) {
        echo "Directory $target_dir exists.\n";
    } else {
        echo "Directory $target_dir does not exist.\n";
    }

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