PHP 另一个文件上传类的解决办法

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/**
* PHP 另一个文件上传类
*
* @param 
* @arrange 512-笔记网： www.512Pic.com
**/
<?php
//上传文件类
class FileUpload {
private $error;   //错误代码
private $maxsize;  //表单最大值
private $type;    //类型
private $typeArr = array('image/jpeg','image/pjpeg','image/png','image/x-png','image/gif');  //类型合集
private $path;    //目录路径
private $today;   //今天目录
private $name;   //文件名
private $tmp;    //临时文件
private $linkpath;  //链接路径
private $linktotay;  //今天目录（相对）
//构造方法，初始化
public function __construct($_file,$_maxsize) {
 $this->error = $_FILES[$_file]['error'];
 $this->maxsize = $_maxsize / 1024;
 $this->type = $_FILES[$_file]['type'];
 $this->path = ROOT_PATH.UPDIR;
 $this->linktotay = date('Ymd').'/';
 $this->today = $this->path.$this->linktotay;
 $this->name = $_FILES[$_file]['name'];
 $this->tmp = $_FILES[$_file]['tmp_name'];
 $this->checkError();
 $this->checkType();
 $this->checkPath();
 $this->moveUpload();
}
//返回路径
public function getPath() {
 $_path = $_SERVER["SCRIPT_NAME"];
 $_dir = dirname(dirname($_path));
 if ($_dir == '\\') $_dir = '/';
 $this->linkpath = $_dir.$this->linkpath;
 return $this->linkpath;
}
//移动文件
private function moveUpload() {
 if (is_uploaded_file($this->tmp)) {
   if (!move_uploaded_file($this->tmp,$this->setNewName())) {
	 Tool::alertBack('警告：上传失败！');
   }
 } else {
   Tool::alertBack('警告：临时文件不存在！');
 }
}
//设置新文件名
private function setNewName() {
 $_nameArr = explode('.',$this->name);
 $_postfix = $_nameArr[count($_nameArr)-1];
 $_newname = date('YmdHis').mt_rand(100,1000).'.'.$_postfix;
 $this->linkpath = UPDIR.$this->linktotay.$_newname;
 return $this->today.$_newname;
}
//验证目录
private function checkPath() {
 if (!is_dir($this->path) || !is_writeable($this->path)) {
   if (!mkdir($this->path)) {
	 Tool::alertBack('警告：主目录创建失败！');
   }
 }
 if (!is_dir($this->today) || !is_writeable($this->today)) {
   if (!mkdir($this->today)) {
	 Tool::alertBack('警告：子目录创建失败！');
   }
 }
}
//验证类型
private function checkType() {
 if (!in_array($this->type,$this->typeArr)) {
   Tool::alertBack('警告：不合法的上传类型！');
 }
}
//验证错误
private function checkError() {
 if (!empty($this->error)) {
   switch ($this->error) {
	 case 1 :
	   Tool::alertBack('警告：上传值超过了约定最大值！');
	   break;
	 case 2 :
	   Tool::alertBack('警告：上传值超过了'.$this->maxsize.'KB！');
	   break;
	 case 3 :
	   Tool::alertBack('警告：只有部分文件被上传！');
	   break;
	 case 4 :
	   Tool::alertBack('警告：没有任何文件被上传！');
	   break;
	 default:
	   Tool::alertBack('警告：未知错误！');
   }
 }
}
}
?>
/***   来自php教程（www.idcnote.com）   ***/

/**
* PHP 另一个文件上传类
*
* @param 
* @arrange 512-笔记网： www.512Pic.com
**/
<?php
class Tool {
//弹窗返回
static public function alertBack($_info) {
  echo "<script type='text/javascript'>alert('$_info');history.back();</script>";
  exit();
}    //弹窗赋值关闭
static public function alertOpenerClose($_info,$_path) {
  echo "<script type='text/javascript'>alert('$_info');</script>";
  echo "<script type='text/javascript'>opener.document.content.thumbnail.value='$_path';</script>";
  echo "<script type='text/javascript'>opener.document.content.pic.style.display='block';</script>";
  echo "<script type='text/javascript'>opener.document.content.pic.src='$_path';</script>";
  echo "<script type='text/javascript'>window.close();</script>";
  exit();
}  }
?>
/***   来自php教程（www.idcnote.com）   ***/

<form name="content" method="post" action="?action=add">
 <input type="text" name="thumbnail" class="text" readonly="readonly" /> <input type="button" value="上传" onclick="centerWindow('./upfile.html','upfile','400','100')" /> <img name="pic" style="display:none;" /> ( * 必须是jpg,gif,png，并且200k内) <br />
</form>

/**
* PHP 另一个文件上传类
*
* @param 
* @arrange 512-笔记网： www.512Pic.com
**/
 <form method="post" action="./upload.php" enctype="multipart/form-data" style="text-align:center;margin:30px;">
<input type="hidden" name="MAX_FILE_SIZE" value="204800" />
<input type="file" name="pic" />
<input type="submit" name="send" value="确定上传" />
</form>

/**
* PHP 另一个文件上传类
*
* @param 
* @arrange 512-笔记网： www.512Pic.com
**/
<?php
require 'FileUpload.class.php';
if (isset($_POST['send'])) {
$_fileupload = new FileUpload('pic',$_POST['MAX_FILE_SIZE']);
$_path = $_fileupload->getPath();
Tool::alertOpenerClose('文件上传成功！',$_path);
} else {
Tool::alertBack('警告：文件过大或者其他未知错误导致浏览器崩溃！');
}

/***   来自php教程（www.idcnote.com）   ***/

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