从FTP获取自动下载文件的PHP类

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/**
* 从FTP获取自动下载文件的PHP类
* @author yukar ( http://yukar.iyunv.com )
*/
class FtpClass{
private $ftpObj;
private $ftpHost = "****";    // 服务器地址
private $ftpPort = ****;            // 服务器端口
private $ftpUser = "****";        // 用户名
private $ftpPassword = "****";        // 口令
private $localBase = '/your/save/path'; //你存放的目录
function __construct($initData=array()){
if (isset($initData['ftpHost']) && $initData['ftpHost']){
$this->ftpHost = $initData['ftpHost'];
}
if (isset($initData['ftpPort']) && $initData['ftpPort']){
$this->ftpPort = $initData['ftpPort'];
}
if (isset($initData['ftpUser']) && $initData['ftpUser']){
$this->ftpUser = $initData['ftpUser'];
}
if (isset($initData['ftpPassword']) && $initData['ftpPassword']){
$this->ftpPassword = $initData['ftpPassword'];
}
if (isset($initData['localBase']) && $initData['localBase']){
$this->localBase = $initData['localBase'];
}
}
function ftp_connect(){
if(!$this->ftpObj){
$this->ftpObj = ftp_connect($this->ftpHost,$this->ftpPort);    // 连接ftp服务器
if($this->ftpObj) {
if(ftp_login($this->ftpObj, $this->ftpUser, $this->ftpPassword)) {    // 登录
return true;
}else{
return false;
}
}else {
return false;
}
}
}
function ftp_download_file($fileName) {
//获取FTP路径
$ftpPath = dirname($fileName) . "/";  
//获取文件名  
$selectFile = basename($fileName);   
// 进入指定路径
if(@ftp_chdir($this->ftpObj,$ftpPath)) {            
//$localBase 如果不存在,新创建目录,务必确保 有创建权限
if(!is_dir($this->localBase)){
mkdir($this->localBase, 0777);
}
$toFile = $this->localBase.$fileName;
if(ftp_get($this->ftpObj, $toFile, $selectFile, FTP_BINARY)) {    //下载指定的FTP文件到指定的本地文件
return true;
}else {
return false;
}
}else {
return false;
}
}
function ftp_quit(){
if($this->ftpObj){
ftp_quit($this->ftpObj);
}
}
}
　　
　　调用就更简单了

$ftpObj = new FtpClass();
$ftpObj->ftp_connect();
$filename = '/config/config.sample.php';
$ftpObj->ftp_download_file($filename);
$ftpObj->ftp_quit();
exit();