FTP file upload class written in php

/**
* desc：FTP类
* link：bbs.it-home.org
* date：2013/02/24
*/
class ftp
{
public $off; // Return operation status (success/failure)
public $conn_id; // FTP connection

/ **
* Method: FTP connection
* @FTP_HOST -- FTP host
* @FTP_PORT -- Port
* @FTP_USER -- Username
* @FTP_PASS -- Password
*/
function __construct($FTP_HOST,$FTP_PORT,$FTP_USER,$FTP_PASS)
{
$this->conn_id = @ftp_connect($FTP_HOST,$FTP_PORT) or die("FTP server connection failed ");
@ftp_login($this->conn_id,$FTP_USER,$FTP_PASS) or die("FTP server login failed");
@ftp_pasv($this->conn_id,1); // Turn on passive simulation
}

/**
* Method: Upload file
* @path-- local path
* @newpath -- upload path
* @type-- create a new directory if it does not exist
*/
function up_file($path,$newpath,$type=true)
{
if($type) $this->dir_mkdirs($newpath);
$this- >off = @ftp_put($this->conn_id,$newpath,$path,FTP_BINARY);
if(!$this->off) echo "File upload failed, please check whether the permissions and path are correct!";
}

/**
* Method: Move files
* @path-- original path
* @newpath -- new path
* @type-- create a new directory if it does not exist
*/
function move_file($path,$newpath,$type=true)
{
if($type) $this->dir_mkdirs($newpath);
$this- >off = @ftp_rename($this->conn_id,$path,$newpath);
if(!$this->off) echo "File move failed, please check whether the permissions and original path are correct!";
 }

/**
* Method: Copy files
* Note: Since FTP does not have a copy command, the alternative operation of this method is: download and then upload to a new path
* @path-- original path
* @newpath -- new path
* @type -- If the target directory does not exist, create it
*/
function copy_file($path,$newpath,$type=true)
{
$downpath = "c:/tmp.dat";
$this->off = @ ftp_get($this->conn_id,$downpath,$path,FTP_BINARY);// Download
if(!$this->off) echo "File copy failed, please check whether the permissions and original path are correct! ";
$this->up_file($downpath,$newpath,$type);
}

/**
* Method: delete file
* @path -- path
*/
function del_file($path)
{
$this->off = @ ftp_delete($this->conn_id,$path);
if(!$this->off) echo "File deletion failed, please check whether the permissions and path are correct! ";
}

/**
* Method: Generate directory
* @path -- path
*/
function dir_mkdirs($path)
{
$path_arr = explode('/',$path); // Get directory array
$file_name = array_pop($path_arr );// Pop up file name
$path_div = count($path_arr);// Get the number of layers

foreach($path_arr as $val)// Create directory
{
if(@ftp_chdir($this->conn_id ,$val) == FALSE)
{
$tmp = @ftp_mkdir($this->conn_id,$val);
if($tmp == FALSE)
{
echo "Directory creation failed, please check permissions and Is the path correct? ";
exit;
}
@ftp_chdir($this->conn_id,$val);
}
}

for($i=1;$i<=$path_div;$i++) // Fallback to root
{
@ftp_cdup($this->conn_id);
}
}

/**
* Method: Close FTP connection
*/
function close()
{
@ftp_close($this->conn_id);
}
}
// class class_ftp end
?>

Call example:

/***
* desc: calling example
* link: bbs.it-home.org
* date: 2013/2/24
*/
$ftp = new ftp('192.168.0.249',21,'hlj','123456'); // Open FTP connection
$ftp ->up_file('aa.wav','test/13548957217/bb.wav'); //Upload file
//$ftp->move_file('aaa/aaa.php','aaa.php') ;//Move files
//$ftp->copy_file('aaa.php','aaa/aaa.php');// Copy files
//$ftp->del_file('aaa.php') ; // Delete file
$ftp->close(); // Close FTP connection
?>