刚写的一个文件上传类。欢迎评点
<html>
<head>
<title>上载文件表单</title></head>
<body>
<form enctype="multipart/form-data" action="index.php" method="post">
请选择文件：<br>
<input name="upload_file" type="file"><br>
<input type="hidden" name="MAX_FILE_SIZE" value="30000">
<input type="submit" value="上传文件">
</form>
</body>
</html>
<?php
define(UPLOAD_DIR,'D:\\AppServ\\www\\test\\upload\\');
define(UPLOAD_WEB_DIR,'\\test\\upload\\');
class upload_file_class{
var $input_name;//上传file的name
var $max_size;//最大上传大小 单位kb
var $allow_ext;//所允许的扩展名
var $err_info; //错误信息
/**
* 构造函数
*
* @param $input_name
* @param $max_size
* @param $allow_ext
* @return
*/
function __construct($input_name,$max_size=1024,$allow_ext=array('jpg','png','gif')){
$this->input_name = $input_name;
$this->max_size = $max_size;
$this->allow_ext = $allow_ext;
$this->err_info_arr = array(
1=>'上传文件大小超过了ini的设定值',
2=>'上传文件大小超过了表单设定的最大值',
3=>'文件只有部分被上传',
4=>'没有文件被上传',
5=>'上传文件大小超过了允许的设定值',
6=>'不是允许的上传文件类型',
7=>'创建目录失败，请确认是否有创建目录的权限',
8=>'创建文件失败，请重试。',
9=>'文件上传时产生错误，请重试。'
);
}
/**
*文件上传
*
* @return $file_path_arr 上传成功的文件路径数组
*/
public function upload(){
global $_FILES;
if( !is_array($this->input_name) )$this->input_name = array($this->input_name);
$file_path_arr = array();
foreach ($this->input_name as $k => $input_name ) {
$__F = $_FILES[$input_name];
if( !empty($__F) ){
if( $__F['error'] > 0 ){
//客户端上传产生错误
$this->set_err($__F['error']);
}
else{
$__F['size'] = $__F['size']/1024;
if( $this->max_size >= $__F['size'] ){
if( $this->check_ext($__F['name']) ){
$save_dir_info = $this->check_dir();
if( $save_dir_info ){
$rand_num = date('Ymdhis').rand(0,10000000);
$ext = $this->get_img_ext($__F['name']);
$new_file_name = $rand_num.".{$ext}";
$full_path = $save_dir_info['full_dir'].$new_file_name;
$full_web_path = $save_dir_info['full_web_dir'].$new_file_name;
if( !file_exists($full_path) ){
if( move_uploaded_file($__F['tmp_name'],$full_path) ){
$file_path_arr[] = array(
'full_path'=>$full_path,
'full_web_path' =>$full_web_path
);
}
else{
$this->set_err(9); //文件上传错误
}
}
else{
$this->set_err(8); //文件已存在
}
}
else{
$this->set_err(7);//创建目录失败
}
}
else{
$this->set_err(6);//扩展名非法
}
}
else{
$this->set_err(5); //文件超过设置大小
}
}
}
}
return $file_path_arr;
}
/**
* 获取文件扩展名
*
* @param char $file_name 文件名
* @return ext扩展名
*/
public function get_img_ext($file_name) {
if( !empty( $file_name ) ){
$img_info = explode('.',$file_name);
$ext = $img_info[count($img_info)-1];
$ext = strtolower($ext);
}
return $ext;
}
/**
* 检查文件合法性
*
* @param char $file_name 文件名
* @return bool
*/
public function check_ext($file_name){
$ext = $this->get_img_ext($file_name);
if(in_array($ext,$this->allow_ext)){
return true;
}
return false;
}
/**
* 检查文件目录
*
* @return $save_dir_info 保存文件的文件夹信息
*/
public function check_dir(){
$date = date("Ymd",time());
$save_dir_info['full_dir'] = UPLOAD_DIR."{$date}/";
$save_dir_info['full_web_dir'] = UPLOAD_WEB_DIR."{$date}/";
if(!is_dir( $save_dir_info['full_dir'] )){
if(!mkdir($save_dir_info['full_dir'],0777)){
return false;
}
}
return $save_dir_info;
}
/**
* 设置错误信息
*
*/
public function set_err($err_code){
$this->err_info = array();
if(!empty($this->err_info_arr[$err_code])){
$this->err_info['err_code'] = $err_code;
$this->err_info['err_info'] = $this->err_info_arr[$err_code];
}
return $this->err_info;
}
}
?>
<?php
if( $_FILES ){
echo(date("Y-m-d h:i",time()));
echo('成功上传文件');
echo('<br/>');
$upload_obj = new upload_file_class('upload_file');
print_r($upload_obj->upload());
}
?>
