PHP用FTP类上传文件视频等的简单实现方法

<?php
/
  仿写CodeIgniter的FTP类
  FTP基本操作
  1) 登陆; connect
  2) 当前目录文件列表; filelist
  3) 目录改变; chgdir
  4) 重命名/移动; rename
  5) 创建文件夹; mkdir
  6) 删除; delete_dir/delete_file
  7) 上传; upload
  8) 下载 download
 
  @author quanshuidingdang
 /
class Ftp {


private $hostname
= '';
private $username
= '';
private $password
= '';
private $port 
= 21;
private $passive 
= TRUE;
private $debug
= TRUE;
private $conn_id 
= FALSE;

/
 构造函数

 @param array 配置数组 : $config = array('hostname'=>'','username'=>'','password'=>'','port'=>''...);
/
public function __construct($config = array()) {
if(count($config) > 0) {
$this->_init($config);
}
}

/
 FTP连接

 @aess public
 @param array 配置数组
 @return boolean
/
public function connect($config = array()) {
if(count($config) > 0) {
$this->_init($config);
}
//判断是否打开了ftp连接
if(FALSE === ($this->conn_id = @ftp_connect($this->hostname,$this->port))) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_connect");
}
return FALSE;
}
//判断是否登录成功
if( ! $this->_login()) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_login");
}
return FALSE;
}
//判断是否开启FTP被动模式
if($this->passive === TRUE) {
ftp_pasv($this->conn_id, TRUE);
}

return TRUE;
}



/
 目录改变

 @aess public
 @param string 目录标识(ftp)
 @param boolean 
 @return boolean
/
public function chgdir($path = '', $supress_debug = FALSE) {
if($path == '' OR ! $this->_isconn()) {
return FALSE;
}

$result = @ftp_chdir($this->conn_id, $path);

if($result === FALSE) {
if($this->debug === TRUE AND $supress_debug == FALSE) {
$this->_error("ftp_unable_to_chgdir:dir[".$path."]");
}
return FALSE;
}

return TRUE;
}

/
 目录生成

 @aess public
 @param string 目录标识(ftp)
 @param int  文件权限列表 
 @return boolean
/
public function mkdir($path = '', $permissions = NULL) {
if($path == '' OR ! $this->_isconn()) {
return FALSE;
}

$result = @ftp_mkdir($this->conn_id, $path);

if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_mkdir:dir[".$path."]");
}
return FALSE;
}

if( ! is_null($permissions)) {
$this->chmod($path,(int)$permissions);
}

return TRUE;
}

/
 上传

 @aess public
 @param string 本地目录标识
 @param string 远程目录标识(ftp)
 @param string 上传模式 auto || ascii
 @param int 上传后的文件权限列表

 @return boolean
/
public function upload($localpath, $remotepath, $mode = 'auto', $permissions = NULL) {
if( ! $this->_isconn()) {
return FALSE;
}
//判断本地文件是否存在
if( ! file_exists($localpath)) {
if($this->debug === TRUE) {
$this->_error("ftp_no_source_file:".$localpath);
}
return FALSE;
}
//判断上传模式
if($mode == 'auto') {
      //获取文件后缀类型
$ext = $this->_getext($localpath);
      //根据后缀类型决定上传模式是 FTP_ASCII(文本模式) 还是 FTP_BINARY(二进制模式);
$mode = $this->_settype($ext);
}

$mode = ($mode == 'ascii') ? FTP_ASCII : FTP_BINARY;
//上传
$result = @ftp_put($this->conn_id, $remotepath, $localpath, $mode);
//判断上传是否成功
if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_upload:localpath[".$localpath."]/remotepath[".$remotepath."]");
}
return FALSE;
}
//判断是否需要改写文件权限
if( ! is_null($permissions)) {
$this->chmod($remotepath,(int)$permissions);
}

return TRUE;
}

/
 下载

 @aess public
 @param string 远程目录标识(ftp)
 @param string 本地目录标识
 @param string 下载模式 auto || ascii

 @return boolean
/
public function download($remotepath, $localpath, $mode = 'auto') {
if( ! $this->_isconn()) {
return FALSE;
}

if($mode == 'auto') {
$ext = $this->_getext($remotepath);
$mode = $this->_settype($ext);
}

$mode = ($mode == 'ascii') ? FTP_ASCII : FTP_BINARY;

$result = @ftp_get($this->conn_id, $localpath, $remotepath, $mode);

if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_download:localpath[".$localpath."]-remotepath[".$remotepath."]");
}
return FALSE;
}

return TRUE;
}

/
 重命名/移动

 @aess public
 @param string 远程目录标识(ftp)
 @param string 新目录标识
 @param boolean 判断是重命名(FALSE)还是移动(TRUE)

 @return boolean
/
public function rename($oldname, $newname, $move = FALSE) {
if( ! $this->_isconn()) {
return FALSE;
}

$result = @ftp_rename($this->conn_id, $oldname, $newname);

if($result === FALSE) {
if($this->debug === TRUE) {
$msg = ($move == FALSE) ? "ftp_unable_to_rename" : "ftp_unable_to_move";
$this->_error($msg);
}
return FALSE;
}

return TRUE;
}

/
 删除文件

 @aess public
 @param string 文件标识(ftp)
 @return boolean
/
public function delete_file($file) {
if( ! $this->_isconn()) {
return FALSE;
}

$result = @ftp_delete($this->conn_id, $file);

if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_delete_file:file[".$file."]");
}
return FALSE;
}

return TRUE;
}

/
 删除文件夹

 @aess public
 @param string 目录标识(ftp)
 @return boolean
/
public function delete_dir($path) {
if( ! $this->_isconn()) {
return FALSE;
}

//对目录宏的'/'字符添加反斜杠'\'
$path = preg_replace("/(.+?)\/$/", "\\1/", $path);

//获取目录文件列表
$filelist = $this->filelist($path);

if($filelist !== FALSE AND count($filelist) > 0) {
foreach($filelist as $item) {
//如果我们无法删除,那么就可能是一个文件夹
//所以我们递归调用delete_dir()
if( ! @delete_file($item)) {
$this->delete_dir($item);
}
}
}

//删除文件夹(空文件夹)
$result = @ftp_rmdir($this->conn_id, $path);

if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_delete_dir:dir[".$path."]");
}
return FALSE;
}

return TRUE;
}

/
 修改文件权限

 @aess public
 @param string 目录标识(ftp)
 @return boolean
/
public function chmod($path, $perm) {
if( ! $this->_isconn()) {
return FALSE;
}

//只有在PHP5中才定义了修改权限的函数(ftp)
if( ! function_exists('ftp_chmod')) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_chmod(function)");
}
return FALSE;
}

$result = @ftp_chmod($this->conn_id, $perm, $path);

if($result === FALSE) {
if($this->debug === TRUE) {
$this->_error("ftp_unable_to_chmod:path[".$path."]-chmod[".$perm."]");
}
return FALSE;
}
return TRUE;
}

/
 获取目录文件列表

 @aess public
 @param string 目录标识(ftp)
 @return array
/
public function filelist($path = '.') {
if( ! $this->_isconn()) {
return FALSE;
}

return ftp_nlist($this->conn_id, $path);
}

/
 关闭FTP

 @aess public
 @return boolean
/
public function close() {
if( ! $this->_isconn()) {
return FALSE;
}

return @ftp_close($this->conn_id);
}

/
 FTP成员变量初始化

 @aess private
 @param array 配置数组  
 @return void
/
private function _init($config = array()) {
foreach($config as $key => $val) {
if(isset($this->$key)) {
$this->$key = $val;
}
}


//特殊字符过滤
$this->hostname = preg_replace('|.+?://|','',$this->hostname);
}

/
 FTP登陆

 @aess private
 @return boolean
/
private function _login() {
return @ftp_login($this->conn_id, $this->username, $this->password);
}

/
 判断con_id

 @aess private
 @return boolean
/
private function _isconn() {
if( ! is_resource($this->conn_id)) {
if($this->debug === TRUE) {
$this->_error("ftp_no_connection");
}
return FALSE;
}
return TRUE;
}

/
 从文件名中获取后缀扩展

 @aess private
 @param string 目录标识
 @return string
/
private function _getext($filename) {
if(FALSE === strpos($filename, '.')) {
return 'txt';
}

$extarr = explode('.', $filename);
return end($extarr);
}

/
 从后缀扩展定义FTP传输模式 ascii 或 binary

 @aess private
 @param string 后缀扩展
 @return string
/
private function _settype($ext) {
$text_type = array (
'txt',
'text',
'php',
'phps',
'php4',
'js',
'css',
'htm',
'html',
'phtml',
'shtml',
'log',
'xml'
);

return (in_array($ext, $text_type)) ? 'ascii' : 'binary';
}

/
 错误日志记录

 @aess prvate
 @return boolean
/
private function _error($msg) {
return @file_put_contents('ftp_err.log', "date[".date("Y-m-d H:i:s")."]-hostname[".$this->hostname."]-username[".$this->username."]-password[".$this->password."]-msg[".$msg."]\n", FILE_APPEND);
}
}


/End of file ftp.php/
/Location /Apache Group/htdocs/ftp.php/

<?php
require_once('ftp.php');


$config = array(
'hostname' => '101.64.183.92', //服务器地址
'username' => 'ftpadminuser',  //FTP登录账号
'password' => 'admin_user',   //FTP登录密码
'port' => 2112         //端口号
);


$ftp = new Ftp();
//连接
$ftp->connect($config);
//上传第一个参数是本地文件名，第二个参数是FTP文件名
$rs=$ftp->upload('jsyh.flv','jsyh.flv');
if($rs){
  echo 1;
}
// $ftp->download('ftp_upload.log','ftp_download.log');