我找到了一个用于传输FTP文件的PHP脚本,它的工作方式完全符合我对项目一部分的需求。该脚本可以通过FTP将文件上传到另一台服务器,并且可以在运行时输出进度。
我使用的代码是:
$fp = fopen($local_file, 'r');
$conn_id = ftp_connect($source_ftp_server);
$login_result = ftp_login($conn_id, $source_ftp_user_name, $source_ftp_user_pass);
$ret = ftp_nb_fput($conn_id, $remote_file, $fp, FTP_BINARY);
while ($ret == FTP_MOREDATA) {
// Establish a new connection to FTP server
if(!isset($conn_id2)) {
$conn_id2 = ftp_connect($source_ftp_server);
$login_result2 = ftp_login($conn_id2, $source_ftp_user_name, $source_ftp_user_pass);
}
// Retreive size of uploaded file.
if(isset($conn_id2)) {
clearstatcache(); // <- this must be included!!
$remote_file_size = ftp_size($conn_id2, $remote_file);
}
// Calculate upload progress
$local_file_size = filesize($local_file);
if (isset($remote_file_size) && $remote_file_size > 0 ){
$i = ($remote_file_size/$local_file_size)*100;
printf("%d%% uploaded<br>", $i);
flush();
}
$ret = ftp_nb_continue($conn_id);
}
if ($ret != FTP_FINISHED) {
echo "<span style='color:red;'><b>There was an error uploading the file...</b></span><br>";
exit(1);
}
else {
echo "<br>Files successfully uploaded!<br><br>";
}
fclose($fp);
我去掉了一些不重要的部分,比如脚本回显的额外信息等
这段代码可以完美地将文件上传到另一个服务器。但是,我还需要使用FTP从服务器下载一个文件。
我真的很想使用与上面相同的代码,带有进度指示器等,但我不确定如何修改此代码以下载文件而不是上传文件。
可能只需要做一些简单的修改。
这段代码中是否有特别需要更改的部分,或者这对于下载和上传是否可以工作相同?
如果有人能给我指出一些正确的方向来解决这个问题,我将非常感激。是否像将ftp_nb_fput命令更改为ftp_nb_get命令一样简单?我并不是真的理解所有的代码,所以很难判断哪些需要修改。
谢谢你的帮助。
您要找的是ftp_get
看起来应该像这样使用:
$conn_id = ftp_connect($source_ftp_server);
$login_result = ftp_login($conn_id, $source_ftp_user_name, $source_ftp_user_pass);
$success = ftp_get($conn_id, $local_file, $server_file, FTP_BINARY);
http://php.net/manual/en/function.ftp-get.php 下面是脚本,进行了必要的修改,使其可以下载文件:
$fp = fopen($local_file2, 'w+');
$conn_id = ftp_connect($source_ftp_server);
$login_result = ftp_login($conn_id, $source_ftp_user_name, $source_ftp_user_pass);
$ret = ftp_nb_fget($conn_id, $fp, $remote_file2, FTP_BINARY);
while ($ret == FTP_MOREDATA) {
// Establish a new connection to FTP server
if(!isset($conn_id2)) {
$conn_id2 = ftp_connect($source_ftp_server);
$login_result2 = ftp_login($conn_id2, $source_ftp_user_name, $source_ftp_user_pass);
}
// Retreive size of source file.
if(isset($conn_id2)) {
clearstatcache(); // <- this must be included!!
$remote_file2_size = ftp_size($conn_id2, $remote_file2);
}
// Calculate download progress
$local_file2_size = filesize($local_file2);
if (isset($remote_file2_size) && $remote_file2_size > 0 ){
$i = ($local_file2_size/$remote_file2_size)*100;
printf("%d%% downloaded<br>", $i);
}
$ret = ftp_nb_continue($conn_id);
}
if ($ret != FTP_FINISHED) {
echo "<span style='color:red;'><b>There was an error downloading the file...</b></span><br>";
exit(1);
}
echo "<br>Files successfully downloaded!<br><br>";
fclose($fp);