php文件上传2

来源：互联网发布：原油交易软件编辑：程序博客网时间：2024/05/14 04:11
<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());
 
    }
 
?>