PHP通过FTP上传文件详解介绍

$ftp_server = “*.*.*.*”;$ftp_user = “lu”;$ftp_pass = “love you”;

ftp_get() 函数从 FTP 服务器上下载一个文件。

// set up a connection or die$conn_id = ftp_connect($ftp_server) or
die(“Couldn’t connect to $ftp_server”);

若成功则返回 true,失败则返回 false。

$login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);

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

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”; }

ftp_connect() 函数建立一个新的 FTP 连接。

// 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);

若成功,则返回一个连接标识,否则返回 false。

if (!$upload) { echo “FTP upload has failed!”; } else { echo “Uploaded
$source_file to $ftp_server as $destination_file”;
}ftp_close($conn_id);

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_澳门新葡亰娱乐官网 ,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:

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, $this->ftpPass))
{
if (!empty($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, $file);
}
function nlist($dir = ‘/service/resource/’) {
return ftp_nlist($this->ftpR, $dir);
}
//R 关闭连接;
function bye() {
return ftp_close($this->ftpR);
}
}
?>

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