PHP上传类实现上传

457475451

　　


<?php

//$array=array('path'=>'d:/','allowsize'=>4000000);
//$t=new upload($array);

class upload{
//路径
private $path='./';
//文件准许的MIME类型
private $allowmime=array('image/jpeg','image/jpg','image/gif','image/pjpeg','image/png','image/x-png','image/wbmp');
//文件准许的后缀
private $allowsub=array('jpg','jpeg','gif','png','bmp');
//文件准许的大小
private $allowsize=2000000;
//文件的错误号
private $errorNum;
//文件的错误信息
private $errorInfo;
//文件的原名
private $orgname;
//文件的新名
private $newname;
//是否启用随机文件名
private $israndname=true;
//文件的大小
private $size;
//文件的后缀
private $subfix;
//文件的前缀
private $prefix='up_';
//文件类型
private $type;
//临时文件路径
private $tmpname;

//构造方法初使化成员属性


public function __construct($array=array()){
foreach($array as $key=>$value){
$key=strtolower($key);
if(!array_key_exists($key,get_class_vars(get_class($this)))){
continue;
}
$this->setOption($key,$value);
}
}

public function setOption($key,$value){
$this->$key=$value;
}
public function up($field){

//检测路径是否正确
if(!$this->checkPath()){
return false;
}
//把传进来的值都赋值给临时变量
$name=$_FILES[$field]['name'];
$size=$_FILES[$field]['size'];
$tmpname=$_FILES[$field]['tmp_name'];
$error=$_FILES[$field]['error'];
$type=$_FILES[$field]['type'];

//把传进来的参数交给setFiles来设置一批信息
if($this->setFiles($name,$size,$tmpname,$error,$type)){
//判断大小,判断MIME，判断后缀
if($this->checkSize()&&$this->checkMime()&&$this->checkSub()){
$this->newname=$this->randname();
echo 11111111111;
if($this->move()){
return $this->newname;
}else{
return false;
}
}else{

return false;
}

//是否启用随机文件名
//
//移动文件
}else{
return false;
}
}
private function move(){
if(is_uploaded_file($this->tmpname)){
$this->path=$this->path.$this->newname;
if(move_uploaded_file($this->tmpname,$this->path)){
return true;
}else{
$this->setOption('errorNum',-7);
return false;
}
}else{
$this->setOption('errorNum',-6);
return false;
}
}
private function randname(){
if($this->israndname){
return $this->prefix.$this->createNewName();
}else{
return $this->prefix.$this->orgname;
}
}
private function createNewName(){
return uniqid().'.'.$this->subfix;
}
private function checkSub(){
if(in_array($this->subfix,$this->allowsub)){
return true;
}else{
$this->setOption('errorNum',-5);
return false;
}
}
private function checkMime(){
if(in_array($this->type,$this->allowmime)){
return true;
}else{
$this->setOption('errorNum',-4);
return false;
}
}
private function checkSize(){
if($this->size>$this->allowsize){
$this->setOption('errorNum',-3);
return false;
}else{
return true;
}
}
private function setFiles($name,$size,$tmpname,$error,$type){
if(!empty($error)){
$this->setOption('errorNum',$error);
return false;
}
$this->orgname=$name;
$this->size=$size;
$this->tmpname=$tmpname;
$this->type=$type;
$arr=explode('.',$name);
$this->subfix=array_pop($arr);
//$this->subfix=$arr[count($arr)-1];
return true;
}

public function checkPath(){
if(empty($this->path)){
$this->setOption('errorNum',-1);
//$this->errorNum=-1
return false;
}else{
$this->path=rtrim($this->path,'/').'/';
if(file_exists($this->path)&&is_writeable($this->path)){
return true;
}else{
if(mkdir($this->path,0777,true)){
return true;
}else{
$this->setOption('errorNum',-2);
return false;
}
}
}

}
private function getErrorNum(){
switch($this->errorNum){
case -1:
$str='文件路径不存在';
break;
case -2:
$str='文件夹创建失败';
break;
case -3:
$str='文件大小超出了手动指定的大小';
break;
case -4:
$str='文件类型不准许';
break;
case -5:
$str='文件后缀不准许';
break;
case -6:
$str='文件不是上传文件';
break;
case -7:
$str='文件移动失败';
break;
case 1:
$str='文件大小超过了php.ini当中设置maxsize准许的值';
break;
case 2:
$str='超过了表单当中设置的最准许的最大值';
break;
case 3:
$str='只有部份文件被上传';
break;
case 4:
$str='没有文件被上传';
break;
case 6:
$str='找不到临时文件夹';
break;
case 7:
$str='临时文件写入失败';
break;
}
return $str;
}
public function __get($proName){
if($proName=='errorInfo'){
return $this->getErrorNum();
}
}

}
$t=new upload();

?>