FTP 函数
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ftp_nb_fput

(PHP 4 >= 4.3.0, PHP 5)

ftp_nb_fput — Stores a file from an open file to the FTP server (non-blocking)

说明

int ftp_nb_fput ( resource $ftp_stream , string $remote_file , resource $handle , int $mode [, int $startpos = 0 ] )

ftp_nb_fput() uploads the data from a file pointer to a remote file on the FTP server.

The difference between this function and the ftp_fput() is that this function uploads the file asynchronously, so your program can perform other operations while the file is being uploaded.

参数

ftp_stream

The link identifier of the FTP connection.

remote_file

The remote file path.

handle

An open file pointer on the local file. Reading stops at end of file.

mode

The transfer mode. Must be either FTP_ASCII or FTP_BINARY.

startpos

The position in the remote file to start uploading to.

返回值

Returns FTP_FAILED or FTP_FINISHED or FTP_MOREDATA.

范例

Example #1 ftp_nb_fput() example

<?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);

// Initate the upload
$ret = ftp_nb_fput($conn_id, $file, $fp, FTP_BINARY);
while ($ret == FTP_MOREDATA) {

   // Do whatever you want
   echo ".";

   // Continue upload...
   $ret = ftp_nb_continue($conn_id);
}
if ($ret != FTP_FINISHED) {
   echo "There was an error uploading the file...";
   exit(1);
}

fclose($fp);
?>

参见

FTP 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Stores a file from an open file to the FTP server (non-blocking)

用户评论:

jascha at bluestatedigital dot com (28-Dec-2004 02:45)

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.

pain at ziodex dot com (05-Dec-2004 07:44)

While trying to create a progress bar for uploading files with the ftp_nb_fput() function
I've noticed that the ftp_size() function will not work during the upload  progess if you are using the
same resource handle.

<?php
    // This will not work
    // ...
    $ret = ftp_nb_fput($conn_id, $remote_file, $fp, FTP_BINARY);
    while ($ret == FTP_MOREDATA) {
        // ...
        $remote_file_size = ftp_size($conn_id, $remote_file);
        // ...
        $ret = ftp_nb_continue($conn_id);
    }
    // ...
?>

However, by creating a new connection to the server you can retrieve current file size of the uploaded file, then
compare it with your local file to calculate the progress. A full example follows:

<?php
    ob_end_flush();
    $remote_file = 'remote.txt';
    $local_file = 'local.txt';

    $fp = fopen($local_file, 'r');
    $conn_id = ftp_connect($ftp_server);
    $login_result = ftp_login($conn_id, $ftp_user_name, $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)) {
            $conn_id2 = ftp_connect($ftp_server);
            $login_result2 = ftp_login($conn_id2, $ftp_user_name, $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 ($ret != FTP_FINISHED) {
        print("There was an error uploading the file...<br>");
        exit(1);
    }
    else {
        print("Done.<br>");
    }
    fclose($fp);
?>