php文件上传类完整实例

本文实例讲述了php文件上传类。分享给大家供大家参考，具体如下：/**$file=newclass_file($file_a

本文实例讲述了php文件上传类。分享给大家供大家参考，具体如下：

/**
$file=new class_file($file_array,"flash/");
 $file->set_allow_type(array("jpg","jpeg","gif"));
 $file->is_limit_size();
 if(!$file->allow_file_size()){
 echo $file->error;
 exit;
 }
 if(!$file->allow_file_type()){
 echo $file->error;
 exit();
 }else if(!$file->uploadfile()){
 echo $file->error;
 exit;
 }
**/
<?php
 class class_file{
 private $file_type;
 private $file_size;
 private $save_path;
 private $file_path;
 private $allow_type=array();
 private $allow_size;
 private $file_name;
 private $flag=false;
 private $mime_type;
 private $is_limit_size=false;
 public $error;
 //构造函数
 function class_file($file_array,$save_path){
 $this->file_path=$file_array['tmp_name'];
 $this->file_size=$file_array['size'];
 $this->file_type=$file_array['type'];
 $this->save_path=$save_path;
 }
 //设置允许的文件类型
 function set_allow_type($allow_type){
 $this->allow_type=$allow_type;
 }
 //设置允许的文件大小
 function set_allow_size($allow_size){
 $this->allow_size=$allow_size;
 }
 //文件上传
 public function uploadfile(){
 if(!$this->allow_file_type()){
 $this->file_name();
 }
 if(move_uploaded_file($this->file_path,$this->save_path.$this->file_name)){
 return true;
 }else{
 $this->error="文件上传失败";
 return;
 }
 }
//判断文件上传的类型
 function allow_file_type(){
 $this->file_name();
 if(in_array($this->mime_type,$this->allow_type)){
 return true;
 }else{
 $this->error="不允许上传的类型";
 exit();
 }
 }
 //判断文件上传的大小
 function allow_file_size($size=100){
 if($this->is_limit_size){
 $this->set_allow_size($size);
 if($this->allow_size>=$this->file_size){
 return true;
 }else{
 $this->error="超过文件上传大小限制";
 }
 }
 }
 //是否限制文件大小
 function is_limit_size(){
 $this->is_limit_size=true;
 }
//文件类型和文件名称
 function file_name(){
 $this->mime_type=substr($this->file_type,strpos($this->file_type,"/")+1);
 if($this->mime_type=="pjpeg"){
 $this->mime_type="jpg";
 }
 if($this->mime_type=="x-ms-wma"){
 $this->mime_type="wma";
 }
 if($this->mime_type=="x-ms-wmv"){
 $this->mime_type="wmv";
 }
 $this->file_name=date("YmdHis").".$this->mime_type";
 }
 function _get_file_name(){
 return $this->file_name;
 }
 }
?>