# PHP ftp_nb_continue() 函數 ## 定義和用法 ftp_nb_continue() 函數連續獲取 / 發送文件。 該函數返回下列值： * FTP_FAILED (send/receive failed) * FTP_FINISHED (send/receive completed) * FTP_MOREDATA (send/receive in progress) 該函數異步地發送/獲取文件。這意味著您的程序可以在文件下載時執行其他操作。 ### 語法 ``` ftp_nb_continue(ftp_connection) ``` | 參數 | 描述 | | --- | --- | | ftp_connection | 必需。規定要使用的 FTP 連接（FTP 連接的標識符）。 | ## 例子 ``` <?php $source = "source.txt"; $target = fopen("target.txt", "w"); $conn = ftp_connect("ftp.testftp.com") or die("Could not connect"); ftp_login($conn,"admin","ert456"); $status = ftp_nb_fget($conn,$source,$target,FTP_ASCII); while ($status == FTP_MOREDATA) { $status = ftp_nb_continue($conn); } if ($status != FTP_FINISHED) { echo "Download error"; } ftp_close($conn); ?> ```