PHP通过FTP上传文件详解介绍-php教程

本文章来总结几个利用php中的ftp功能来实现通过FTP上传文件,有需要学习的朋友可参考参考.

ftp_get() 函数从 FTP 服务器上下载一个文件,若成功则返回 true,失败则返回 false.

语法:ftp_get(ftp_connection,local,remote,mode,resume)

ftp_connect() 函数建立一个新的 FTP 连接,若成功,则返回一个连接标识,否则返回 false.

语法:ftp_connect(host,port,timeout)

ftp_login() 函数登录 FTP 服务器,若成功则返回 true,失败则返回 false 并发出一个警告.

语法:ftp_login(ftp_connection,username,password)

三个函数己经介绍好了,现在开始了.

例1,代码如下:

$ftp_server = "*.*.*.*";
$ftp_user = "lu";
$ftp_pass = "love you";
// set up a connection or die
$conn_id = ftp_connect($ftp_server) or die("Couldn't connect to $ftp_server");
$login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);
if ((!$conn_id) || (!$login_result)) {
echo "FTP connection has failed!";
echo "Attempted to connect to $ftp_server for user $ftp_user_name";
exit;
} else {
echo "Connected to $ftp_server, for user $ftp_user_name";
}
// try to login
$filename=date('Ymd').".xml";
$source_file="/usr/local/IVR/sendwireless/xml/data/".$filename; //源地址
echo $source_file;
$destination_file="/ITC/admin/logstat/ftplog/".$filename; //目标地址
$upload = ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY) or die("Couldn't connect to $ftp_server");
ftp_quit($conn_id);
if (!$upload) {
echo "FTP upload has failed!";
} else {
echo "Uploaded $source_file to $ftp_server as $destination_file";
}
ftp_close($conn_id);

上传时先传至本地对文件作必要的修改,如加水印等等操作,然后再通过FTP传至远程服务器.

例2,代码如下:

//上传图片
if ($_FILES['pic']['name'])
{
$file_path='/opt/www/img/';
$pic = upload('pic', $filename, 'jpg|jpeg|gif|bmp|png', $file_path);
if(!$pic)
{
echo "图片上传失败!";
exit;
}
require_once(ROOT_PATH . 'Lib/Class/Ftp.class.php');
$ftp = new ftp("127.0.0.1","gamezeroftp","123456","/opt/www");
$localfile='/opt/www/img/'.$pic;
$remotefile='/opt/www/gamepics/'.$pic;
$ftpput = $ftp->put($localfile, $remotefile); //FTP上传原图到远程服务器
if(!$ftpput){
echo "上传图片到远程服务器失败!";
}
$ftp->bye(); //关闭FTP连接
}

附上FTP操作类,代码如下:

ftpUrl=$ftpUrl;
}
if($ftpUser){
$this->ftpUser=$ftpUser;
}
if($ftpPass){
$this->ftpPass=$ftpPass;
}
if($ftpUrl){
$this->ftpDir=$ftpDir;
}
if ($this->ftpR = ftp_connect($this->ftpUrl, 21)) {
if (ftp_login($this->ftpR, $this->ftpUser, $this->ftpPass)) {
if (!emptyempty($this->ftpDir)) {
ftp_chdir($this->ftpR, $this->ftpDir);
}
ftp_pasv($this->ftpR, true);//R 启用被动模式;
$status = 1;
} else {
$status = 3;
}
} else {
$status = 2;
}
}
//R 切换目录;
function cd($dir) {
return ftp_chdir($this->ftpR, $dir);
}
//R 返回当前路劲;
function pwd() {
return ftp_pwd($this->ftpR);
}
//R 创建目录
function mkdir($directory) {
return ftp_mkdir($this->ftpR,$directory);
}
//R 删除目录
function rmdir($directory) {
return ftp_rmdir($this->ftpR,$directory);
}
//R 上传文件;
function put($localFile, $remoteFile = '') {
if ($remoteFile == '') {
$remoteFile = end(explode('/', $localFile));
}
$res = ftp_nb_put($this->ftpR, $remoteFile, $localFile, FTP_BINARY);
while ($res == FTP_MOREDATA) {
$res = ftp_nb_continue($this->ftpR);
}
if ($res == FTP_FINISHED) {
return true;
} elseif ($res == FTP_FAILED) {
return false;
}
}
//R 下载文件;
function get($remoteFile, $localFile = '') {
if ($localFile == '') {
$localFile = end(explode('/', $remoteFile));
}
if (ftp_get($this->ftpR, $localFile, $remoteFile, FTP_BINARY)) {
$flag = true;
} else {
$flag = false;
}
return $flag;
}
//R 文件大小;
function size($file) {
return ftp_size($this->ftpR, $file);
}
//R 文件是否存在;
function isFile($file) {
if ($this->size($file) >= 0) {
return true;
} else {
return false;
}
}
//R 文件时间
function fileTime($file) {
return ftp_mdtm($this->ftpR, $file);
}
//R 删除文件;
function unlink($file) {
return ftp_delete($this->ftpR, $file);
}//开源软件:phpfensi.com
function nlist($dir = '/service/resource/') {
return ftp_nlist($this->ftpR, $dir);
}
//R 关闭连接;
function bye() {
return ftp_close($this->ftpR);
}
}

PHP通过FTP上传文件详解介绍

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