php实现ftp上传功能的类

参考了phpwind的内置操作ftp函数，他是使用socket直接来操作的，稍微修改了几个地方。

ftp.class.php

<?php function pwDirCv($dir){ //Copyright (c) 2003-09 PHPWind $dir = str_replace(array(“‘”,’#',’=',’`',’</p>,’%',’&’,';’),”,$dir); return trim(preg_replace(‘/(//){2,}|(///){1,}/’,'/’,$dir),’/'); } class FTP { var $sock; var $rootpath; var $timeout; var $data_connection; function FTP($ftp_server,$ftp_port=21,$ftp_user,$ftp_pass,$ftp_dir=”,$ftp_timeout=10) { $errno = 0; $errstr = ”; $this->sock = @fsockopen($ftp_server,$ftp_port,$errno,$errstr,$ftp_timeout); if (!$this->sock || !$this->checkcmd()) { $this->showerror(‘ftp_connect_failed’); } @stream_set_timeout($this->sock,$ftp_timeout); if (!$this->sendcmd(‘USER’,$ftp_user)) { $this->showerror(‘ftp_user_failed’); } if (!$this->sendcmd(‘PASS’,$ftp_pass)) { $this->showerror(‘ftp_pass_failed’); } $this->rootpath = $this->pwd(); if ($ftp_dir) { $this->rootpath .= trim(str_replace(‘//’,'/’,$ftp_dir), ‘/’) . ‘/’; } $this->timeout = $ftp_timeout; $this->chdir($this->rootpath); return true; } function pwd() { $this->sendcmd(‘PWD’, ”, false); if (!($path = $this->checkcmd(true)) || !preg_match(“/^[0-9]{3} /”(.+?)/”/”, $path, $matchs)) { return ‘/’; } return $matchs[1] . ((substr($matchs[1],-1) == ‘/’) ? ” : ‘/’); } function upload($localfile,$remotefile,$mode=’I') { if (str_replace(array(‘..’,’.php.’),”,$localfile)!=$localfile || preg_match(‘//.php$/i’,$localfile)) { $this->showerror(“Error：illegal file type！（{$localfile}）”); } if (str_replace(array(‘..’,’.php.’),”,$remotefile)!=$remotefile || preg_match(‘//.php$/i’,$remotefile)) { $this->showerror(“Error：illegal file type！（{$remotefile}）”); } if ($savedir = dirname($remotefile)) { $this->mkdir($savedir); } $remotefile = $this->rootpath . pwDirCv($remotefile); if (!($fp = @fopen($localfile,’rb’))) { $this->showerror(“Error：Cannot read file /”$localfile/”"); } // ‘I’ == BINARY mode // ‘A’ == ASCII mode $mode != ‘I’ && $mode = ‘A’; $this->delete($remotefile); if (!$this->sendcmd(‘TYPE’,$mode)) { $this->showerror(‘Error：TYPE command failed’); } $this->open_data_connection(); $this->sendcmd(‘STOR’,$remotefile); while (!@feof($fp)) { @fwrite($this->data_connection,@fread($fp,4096)); } @fclose($fp); $this->close_data_connection(); if (!$this->checkcmd()) { $this->showerror(‘Error：PUT command failed’); } else { $this->sendcmd(‘SITE CHMOD’,base_convert(0644,10,8).” $remotefile”); } return $this->size($remotefile); } function size($file) { $this->sendcmd(‘SIZE’,$file,false); if (!($size_port = $this->checkcmd(true))) { $this->showerror(‘Error：Check SIZE command failed’); } return preg_replace(“/^[0-9]{3} ([0-9]+)/r/n/”,”//1″,$size_port); } function delete($file) { return $this->sendcmd(‘DELE’,$this->rootpath.pwDirCv($file)); } function rename($oldname,$newname) { $oldname = $this->rootpath.pwDirCv($oldname); $this->sendcmd(‘RNFR’,$oldname); return $this->sendcmd(‘RNTO’,$newname); } function file_exists($filename) { $directory = substr($filename,0,strrpos($filename,’/')); $filename = str_replace(“$directory/”,”,$filename); if ($directory) { $directory = $this->rootpath.$directory.’/'; } else { $directory = $this->rootpath; } $this->chdir($directory); $list = $this->nlist(); $this->chdir($this->rootpath); if (!empty($list) && in_array($filename,$list)) { return true; } return false; } function nlist($dir=”) { $this->open_data_connection(); $this->sendcmd(‘NLST’,$dir); $list = array(); while (!@feof($this->data_connection)) { $list[] = preg_replace(‘/[/r/n]/’,”,@fgets($this->data_connection,512)); } $this->close_data_connection(); if (!$this->checkcmd(true)) { $this->showerror(‘Error：LIST command failed’); } return $list; } function close_data_connection() { return @fclose($this->data_connection); } function open_data_connection() { $this->sendcmd(‘PASV’,”,false); if (!($ip_port = $this->checkcmd(true))) { $this->showerror(‘Error：Check PASV command failed’); } if (!preg_match(‘/[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+/’,$ip_port,$temp)) { $this->showerror(“Error：Illegal ip-port format($ip_port)”); } $temp = explode(‘,’,$temp[0]); $server_ip = “$temp[0].$temp[1].$temp[2].$temp[3]“; $server_port = $temp[4]*256+$temp[5]; if (!$this->data_connection = @fsockopen($server_ip,$server_port,$errno,$errstr,$this->timeout)) { $this->showerror(“Error：Cannot open data connection to $server_ip:$server_port<br />Error：$errstr ($errno)”); } @stream_set_timeout($this->data_connection,$this->timeout); return true; } function mkdir($dir) { $dir = explode(‘/’,pwDirCv($dir)); $dirs = ”; $result = false; $base777 = base_convert(0777,10,8); for ($i = 0, $count = count($dir); $i < $count; $i++) { if (strpos($dir[$i],’.') === 0) { continue; } $result = $this->sendcmd(‘MKD’, $dir[$i]); $this->sendcmd(‘SITE CHMOD’,”$base777 $dir[$i]“); $this->chdir($this->rootpath.$dirs.$dir[$i]); $dirs .= “$dir[$i]/”; } $this->chdir($this->rootpath); return $result; } function chdir($dir) { $dir = (($dir[0]!=’/') ? ‘/’ : ”).$dir; if ($dir!==’/’ && substr($dir,-1)==’/') { $dir = substr($dir,0,-1); } if (!$this->sendcmd(‘CWD’,$dir)) { $this->showerror(‘ftp_cwd_failed’); } return true; } function close() { if (!$this->sock) { return false; } if (!$this->sendcmd(‘QUIT’) || !fclose($this->sock)) { $this->showerror(‘Error：QUIT command failed’,false); } return true; } function showerror($lang,$close=true) { $close && $this->close(); echo $lang; exit(); } function sendcmd($cmd,$args = ”,$check = true) { !empty($args) && $cmd .= ” $args”; fputs($this->sock,”$cmd/r/n”); if ($check === true && !$this->checkcmd()) { return false; } return true; } function checkcmd($return = false) { $resp = $rcmd = ”; $i = 0; do { $rcmd = fgets($this->sock,512); $resp.= $rcmd; } while (++$i < 20 && !preg_match(‘/^/d{3}/s/is’,$rcmd)); if (!preg_match(‘/^[123]/’,$rcmd)) { return false; } return $return ? $resp : true; } } ?> testftp.php <?php $ROOT_PATH = $_SERVER['DOCUMENT_ROOT']; require_once(‘ftp.class.php’); $ftp = new ftp(“127.0.0.1″,”21″,”test”,”test”); $localfile=$ROOT_PATH.’/uploadfiles/images/201004/20100412163248.swf’; $remotefile=’/uploadfiles/images/201004/20100412163248.swf’; $ftpput = $ftp->upload($localfile, $remotefile); //FTP上传原图到远程服务器 $ftp->close(); //关闭FTP连接 ?>