PHP5+UTF8多文件上传类

还有些功能没有加上去,如自动更名,图片处理等.可根据需要自己添加. USE: $up = new upfile(ROOT_PATH.'data/'.date("Ym",time()),array('gif','jpg','jpeg'),true); $fileimg = $up->upload($_FILES['img']);//返回上传后文件名数组,$_FILES['img']为上传的文件 可使用$up->log查看上传时信息. <?php //==================================================== // FileName: upfile.class.php // Summary: 文件上传类 // Author: millken(迷路林肯) // LastModifed: 2008-6-4 // copyright (c)2008 millken@gmail.com //==================================================== if(!defined('OK'))exit(__FILE__.'Access Denied'); class upfile { public $ExtensionFileFormat = array(); public $returninfo = array(); private $ImageFileFormat = array('gif','bmp','jpg','jpe','jpeg','png'); private $OtherFileFormat = array('zip','pdf','rar','xls','doc','ppt','csv'); private $savePath; private $attachment_path = './upfiles/'; private $overwrite = false; # 同名时是否覆盖 private $maxSize = 0; # 文件最大字节，为0时不限制大小 private $ext; private $errno = 0; /* 构造函数 * (string)$savePath 文件保存路径，默认为$attachment_path * (array)$extensionFileFormat 自定义上传文件的扩展名，未设置时为$ImageFileFormat || $OtherFileFormat * (bool)$overwrite 是否覆盖同名文件 */ public function __construct($savePath='',$extensionFileFormat = array(),$overwrite = false) { $this->savePath = empty($savePath)?$this->attachment_pathsavePath.'/'; $this->extensionFileFormat = is_array($extensionFileFormat)?$extensionFileFormat:array(); $this->overwrite = is_bool($overwrite)?$overwrite:false; } /*上传函数 * (array)$files 待上传的文件数组$_FILES['attach'] * (number)$maxSize 文件的最大字节数，默认为0不限制上传大小 */ public function upload($files,$maxSize=0) { $this->maxSize = is_numeric($maxSize)?$maxSize:0; if(isset($files) && is_array($files)) { if(is_array($files['name'])) { foreach($files as $key => $var) { foreach($var as $id => $val) { $attachments[$id][$key] = $val; } } } else { $attachments[] = $files; } } self::check_file_type($attachments); if(empty($this->filelist)) { $this->log .= "待上传的文件列表为空。
"; return array(); } if(!self::makeDirectory() || !@is_writable($this->savePath)) { $this->log .= $this->savePath . "不能创建或其权限为不可写。
"; return array(); } $filearray = array(); foreach($this->filelist as $k=>$f) { if($this->maxSize && $f['size']>$this->maxSize) { $this->log .= $f['name'] . "其大小超过了设定的值：" . $this->maxSize ."
"; }elseif($this->overwrite == false && file_exists($this->savePath . $f['name'])) { $this->log .= $f['name'] . "已经存在于目录：" . $this->savePath . "
"; }else{ @unlink($this->savePath . $f['name']); if(@move_uploaded_file($f['tmp_name'],$this->savePath . mb_convert_encoding($f['name'],'gbk','utf-8'))) {//如果不进行编码转换，中文将无法支持 $this->log .= $f['name'] . "成功上传到目录：". $this->savePath ."
"; $filearray[$k] = $this->savePath . $f['name']; }else{ $this->log .= $f['name'] . "上传失败。
"; } } } return $filearray; } /*检测文件的类型 *(array)$files 文件数组 */ private function check_file_type($files) { $this->filelist = array(); foreach($files as $key=>$file) { if($file['error'] == 0) { $ext = strtolower(substr($file['name'], strrpos($file['name'], '.') + 1)); $str = @file_get_contents($file['tmp_name'],FALSE,NULL,0,20); if((in_array($ext,array('jpg','jpeg')) && substr($str ,0, 3) !== "xFFxD8xFF") || ($ext == 'gif' && substr($str ,0, 4) !== 'GIF8') || ($ext == 'png' && substr($str ,0, 8) !== "x89x50x4Ex47x0Dx0Ax1Ax0A") || ($ext == 'bmp' && substr($str ,0, 2) !== 'BM') || ($ext == 'swf' && (substr($str ,0, 3) !== 'CWS' || substr($str ,0, 3) !== 'FWS')) || ($ext == 'zip' && substr($str ,0, 4) !== "PKx03x04") || ($ext == 'rar' && substr($str ,0, 4) !== 'Rar!') || ($ext == 'pdf' && substr($str ,0, 4) !== "x25PDF") || ($ext == 'chm' && substr($str ,0, 4) !== 'ITSF') || ($ext == 'rm' && substr($str ,0, 4) !== "x2ERMF") || ($ext == 'exe' && substr($str ,0, 2) !== "MZ") || (in_array($ext,array('doc','xls','ppt')) && substr($str ,0, 4) !== "xD0xCFx11xE0")) { $this->log .= $file['name'] . "文件类型与文件内容不符合。
"; }elseif((!empty($this->extensionFileFormat) && in_array($ext,$this->extensionFileFormat)) || (empty($this->extensionFileFormat) && (in_array($ext,$this->ImageFileFormat) || in_array($ext,$this->OtherFileFormat)))) { $this->filelist[$key] = $file; }else{ $this->log .= $file['name'] . "不符合上传文件的类型。
"; @unlink($file['tmp_name']); } } } } /*生成上传目录 * */ private function makeDirectory() { $directoryName = str_replace("\","/", $this->savePath); $dirNames = explode('/', $directoryName); $total = count($dirNames); $temp = ''; for($i=0; $i<$total; $i++) { $temp .= $dirNames[$i].'/'; if (!is_dir($temp)) { $oldmask = @umask(0); if (!@mkdir($temp, 0777)) return false; @umask($oldmask); } }; if(is_dir($this->savePath)) { return true; } else { return false; }; } } ?>


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