php 简单文件图片上传类

这个文件上传类可以上传gif",".jpg",".jar",".jad",".mid",".mp3",".mid",".bmp",".wav",".rm",".wmv文件格式哦，如果你还想支持其它的话可以设计$this->file_type();就OK了，。

<?php
class upload{

var $file_type;
var $file_size;
var $file_name;
var $exname;
var $datetime;

function up($post_name,$path){
 $this->file_name=$_FILES[$post_name]["name"];
 $this->exname=strtolower(substr($this->file_name,strrpos($this->file_name,".")));
 $this->file_size=$_FILES[$post_name]["size"];
 $this->file_type=array(".gif",".jpg",".jar",".jad",".mid",".mp3",".mid",".bmp",".wav",".rm",".wmv");
 $this->datetime=date("YmdHis");
 if(!in_array($this->exname,$this->file_type)){
  print("<script language='javascript'>");
  print("alert('格式不支持！');");
  print("history.back();");
  print("</script>");
  break;
 }elseif($this->file_size>"50000"){
  print("<script language='javascript'>");
  print("alert('图片大小不能超过50KB！');");
  print("history.back();");
  print("</script>");
  break;
 }else{
  move_uploaded_file($_FILES[$post_name]["tmp_name"],$path.$this->datetime.$this->exname);
  }
}

function fileName(){
   $pic=$this->datetime.$this->exname;
   return $pic;
}

}
?>