php简单文件上传类

— 2015年9月10日 in PHP技术 • add comment
  1. <?php  
  2. header(“Content-Type:text/html; charset=utf-8”);  
  3. if($_POST[‘submit’]){  
  4.     $upfiles = new Upload();  
  5.     $upfiles->upload_file();  
  6. }  
  7. class Upload{  
  8.         /*作者：mckee 来自：www.phpddt.com*/  
  9.     public $upload_name;                    //上传文件名  
  10.     public $upload_tmp_name;                //上传临时文件名  
  11.     public $upload_final_name;              //上传文件的最终文件名  
  12.     public $upload_target_dir;              //文件被上传到的目标目录  
  13.     public $upload_target_path;             //文件被上传到的最终路径  
  14.     public $upload_filetype ;               //上传文件类型  
  15.     public $allow_uploadedfile_type;        //允许的上传文件类型  
  16.     public $upload_file_size;               //上传文件的大小  
  17.     public $allow_uploaded_maxsize=10000000;    //允许上传文件的最大值  
  18.     //构造函数  
  19.     public function __construct()  
  20.     {  
  21.         $this->upload_name = $_FILES[“file”][“name”]; //取得上传文件名  
  22.         $this->upload_filetype = $_FILES[“file”][“type”];  
  23.         $this->upload_tmp_name = $_FILES[“file”][“tmp_name”];  
  24.         $this->allow_uploadedfile_type = array(‘jpeg’,’jpg’,’png’,’gif’,’bmp’,’doc’,’zip’,’rar’,’txt’,’wps’);  
  25.         $this->upload_file_size = $_FILES[“file”][“size”];  
  26.         $this->upload_target_dir=“./upload”;  
  27.     }  
  28.     //文件上传  
  29.     public function upload_file()  
  30.     {  
  31.         $upload_filetype = $this->getFileExt($this->upload_name);  
  32.         if(in_array($upload_filetype,$this->allow_uploadedfile_type))  
  33.         {  
  34.             if($this->upload_file_size < $this->allow_uploaded_maxsize)  
  35.             {  
  36.                 if(!is_dir($this->upload_target_dir))  
  37.                 {  
  38.                     mkdir($this->upload_target_dir);  
  39.                     chmod($this->upload_target_dir,0777);  
  40.                 }  
  41.                 $this->upload_final_name = date(“YmdHis”).rand(0,100).‘.’.$upload_filetype;  
  42.                 $this->upload_target_path = $this->upload_target_dir.“/”.$this->upload_final_name;  
  43.                 if(!move_uploaded_file($this->upload_tmp_name,$this->upload_target_path))  
  44.                     echo “<font color=red>文件上传失败！</font>”;  
  45.             }  
  46.             else  
  47.             {  
  48.                 echo(“<font color=red>文件太大,上传失败！</font>”);  
  49.             }  
  50.         }  
  51.         else  
  52.         {  
  53.             echo(“不支持此文件类型，请重新选择”);  
  54.         }  
  55.     }  
  56.    /** 
  57.     *获取文件扩展名 
  58.     *@param String $filename 要获取文件名的文件 
  59.     */  
  60.    public function getFileExt($filename){  
  61.         $info = pathinfo($filename);  
  62.         return $info[“extension”];  
  63.    }  
  64.       
  65. }  
  66. ?>  
  67. <form enctype=“multipart/form-data” method=“POST” action=“”>  
  68. <input type=“file” name=“file”><input type=“submit” name=“submit” value=“上传”>  
  69. </form>  

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