51可用代码模板网站

咨询热线:

181-1164-6936
  • 1
PHP代码
当前位置:首页>实用代码>PHP代码>

PHP之文件上传类

时间:2017-08-11 17:28点击:

FileUpload.class.PHP,其中用到了两个常量,可在网站配置文件中定义:define('ROOT_PATH',dirname(__FILE__)); //网站根目录、define('UPDIR','/uploads/'); //上传主目录



    <?php  
        //上传文件类  
        class FileUpload {  
           private $error;   //错误代码  
           private $maxsize;  //表单最大值  
           private $type;    //类型  
           private $typeArr = array('image/jpeg','image/pjpeg','image/png','image/x-png','image/gif');  //类型合集  
           private $path;    //目录路径  
           private $today;   //今天目录  
           private $name;   //文件名  
           private $tmp;    //临时文件  
           private $linkpath;  //链接路径  
           private $linktotay;  //今天目录(相对)  
       
           //构造方法,初始化  
           public function __construct($_file,$_maxsize) {  
                  $this->error = $_FILES[$_file]['error'];  
                  $this->maxsize = $_maxsize / 1024;  
                  $this->type = $_FILES[$_file]['type'];  
                  $this->path = ROOT_PATH.UPDIR;  
                  $this->linktotay = date('Ymd').'/';  
                  $this->today = $this->path.$this->linktotay;  
                  $this->name = $_FILES[$_file]['name'];  
                  $this->tmp = $_FILES[$_file]['tmp_name'];  
                  $this->checkError();  
                  $this->checkType();  
                  $this->checkPath();  
                  $this->moveUpload();  
           }  
       
           //返回路径  
           public function getPath() {  
                  $_path = $_SERVER["SCRIPT_NAME"];  
                  $_dir = dirname(dirname($_path));  
                  if ($_dir == '\\') $_dir = '/';  
                  $this->linkpath = $_dir.$this->linkpath;  
                  return $this->linkpath;  
           }  
       
           //移动文件  
           private function moveUpload() {  
                  if (is_uploaded_file($this->tmp)) {  
                     if (!move_uploaded_file($this->tmp,$this->setNewName())) {  
                            Tool::alertBack('警告:上传失败!');  
                     }  
                  } else {  
                     Tool::alertBack('警告:临时文件不存在!');  
                  }  
           }  
       
           //设置新文件名  
           private function setNewName() {  
                  $_nameArr = explode('.',$this->name);  
                  $_postfix = $_nameArr[count($_nameArr)-1];  
                  $_newname = date('YmdHis').mt_rand(100,1000).'.'.$_postfix;  
                  $this->linkpath = UPDIR.$this->linktotay.$_newname;  
                  return $this->today.$_newname;  
           }  
       
           //验证目录  
           private function checkPath() {  
                  if (!is_dir($this->path) || !is_writeable($this->path)) {  
                     if (!mkdir($this->path)) {  
                            Tool::alertBack('警告:主目录创建失败!');  
                     }  
                  }  
                  if (!is_dir($this->today) || !is_writeable($this->today)) {  
                     if (!mkdir($this->today)) {  
                            Tool::alertBack('警告:子目录创建失败!');  
                     }  
                  }  
           }  
       
           //验证类型  
           private function checkType() {  
                  if (!in_array($this->type,$this->typeArr)) {  
                     Tool::alertBack('警告:不合法的上传类型!');  
                  }  
           }  
       
           //验证错误  
           private function checkError() {  
                  if (!empty($this->error)) {  
                     switch ($this->error) {  
                            case 1 :  
                               Tool::alertBack('警告:上传值超过了约定最大值!');  
                               break;  
                            case 2 :  
                               Tool::alertBack('警告:上传值超过了'.$this->maxsize.'KB!');  
                               break;  
                            case 3 :  
                               Tool::alertBack('警告:只有部分文件被上传!');  
                               break;  
                            case 4 :  
                               Tool::alertBack('警告:没有任何文件被上传!');  
                               break;  
                            default:  
                               Tool::alertBack('警告:未知错误!');  
                     }  
                  }  
           }  
        }  
    ?>  



 
其中,用到了一个静态工具类 Tool.class.php,代码如下:   

Tool.class.php



    <?php  
       class Tool {  
        
              //弹窗返回  
              static public function alertBack($_info) {  
                 echo "<script type='text/javascript'>alert('$_info');history.back();</script>";  
                 exit();  
              }         //弹窗赋值关闭  
              static public function alertOpenerClose($_info,$_path) {  
                 echo "<script type='text/javascript'>alert('$_info');</script>";  
                 echo "<script type='text/javascript'>opener.document.content.thumbnail.value='$_path';</script>";  
                 echo "<script type='text/javascript'>opener.document.content.pic.style.display='block';</script>";  
                 echo "<script type='text/javascript'>opener.document.content.pic.src='$_path';</script>";  
                 echo "<script type='text/javascript'>window.close();</script>";  
                 exit();  
              }  }  
    ?>  



  下面进行一个实例演示,请看下面的步骤:

        1、先创建一个 index.php 页面,做一个表单

index.php

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
    <a target=_blank href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
        http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>">  
    <html xmlns="<a target=_blank href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</a>">  
        <head>  
              <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  
              <title>main</title>  
       </head>  
       <body>  
              <form name="content" method="post" action="?action=add">  
             <input type="text" name="thumbnail" class="text" readonly="readonly" /> 
        <input type="button" value="上传" onclick="centerWindow('./upfile.html','upfile','400','100')" /> 
        <img name="pic" style="display:none;" /> ( * 必须是jpg,gif,png,并且200k内) <br />  
              </form>  
       </body>  
    </html>  



 2、创建 upfile.html 文件,建立表单提交到 upload.php.

upfile.html


    <p><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     "<a target=_blank href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
       http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>">  
    <html xmlns="<a target=_blank href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</a>">  
        <head>  
            <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  
            <title>上传图片</title>  
        </head>  
        <body></p><p>     <form method="post" action="./upload.php" enctype="multipart/form-data" style="text-align:center;margin:30px;">  
           <input type="hidden" name="MAX_FILE_SIZE" value="204800" />  
           <input type="file" name="pic" />  
            <input type="submit" name="send" value="确定上传" />  
    </form></p><p></body>  
    </html></p>  




 3、通过 upload.php 文件调用文件上传类实现上传,并且把路径赋给 input 标签和显示图片



    <?php  
        require 'FileUpload.class.php';  
        if (isset($_POST['send'])) {  
           $_fileupload = new FileUpload('pic',$_POST['MAX_FILE_SIZE']);  
           $_path = $_fileupload->getPath();  
      
           Tool::alertOpenerClose('文件上传成功!',$_path);  
        } else {  
            Tool::alertBack('警告:文件过大或者其他未知错误导致浏览器崩溃!');  
        }  
    ?> 





51可用模板(代码)网站专为广大站长朋友提供精品模板与代码,同时免费提供网站收录。
本站域名: WWW.51KYDM.COM    联系方式:QQ:182468923    手机:18111646936
本站关键词:网站链接收录网址收录入口网站免费提交收录网站收录提交入口    网站地图
51可用模板
展开