FTP_FAILED = 0
FTP_FINISHED = 1
FTP_MOREDATA = 2
(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
ftp_nb_fput — 将文件存储到 FTP 服务器 （非阻塞）
$ftp_stream
, string $remote_file
, resource $handle
, int $mode = FTP_IMAGE
, int $startpos = 0
) : intftp_nb_fput() 把已打开的文件内容存储到远程 FTP 服务器
本函数和 ftp_fput() 函数的区别是 本函数是异步上传文件。 所以在文件上传过程中，你的程序还可以执行其他操作。
ftp_streamFTP 连接标示符。
remote_file远程文件路径。
handle已经打开的本地文件指针，当读取到文件末尾时结束。
mode
传输模式。必须是 FTP_ASCII 或
FTP_BINARY。
startpos要将文件存储到远程文件的开始位置（即从远程文件的哪个字节位置开始存储）。
返回 FTP_FAILED 或 FTP_FINISHED
或 FTP_MOREDATA。
| 版本 | 说明 |
|---|---|
| 7.3.0 |
参数 mode 变为可选参数。
在之前的版本中，这是一个必填参数。
|
Example #1 ftp_nb_fput() 函数例程
<?php
$file = 'index.php';
$fp = fopen($file, 'r');
$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
// 初始化上传
$ret = ftp_nb_fput($conn_id, $file, $fp, FTP_BINARY);
while ($ret == FTP_MOREDATA) {
// 任何其他需要做的操作
echo ".";
// 继续上传...
$ret = ftp_nb_continue($conn_id);
}
if ($ret != FTP_FINISHED) {
echo "There was an error uploading the file...";
exit(1);
}
fclose($fp);
?>
FTP_FAILED = 0
FTP_FINISHED = 1
FTP_MOREDATA = 2
There is an easy way to check progress while uploading a file. Just use the ftell function to watch the position in the file handle. ftp_nb_fput will increment the position as the file is transferred.
Example:
<?
$fh = fopen ($file_name, "r");
$ret = ftp_nb_fput ($ftp, $file_name, $fh, FTP_BINARY);
while ($ret == FTP_MOREDATA) {
print ftell ($fh)."\n";
$ret = ftp_nb_continue($ftp);
}
if ($ret != FTP_FINISHED) {
print ("error uploading\n");
exit(1);
}
fclose($fh);
?>
This will print out the number of bytes transferred thus far, every time the loop runs. Coverting this into a percentage is simply a matter of dividing the number of bytes transferred by the total size of the file.