dede的模块开发二

首先包含的是include/common.inc.php ，然后再包含include/request.php

上节课我们讲到如果我们未定义DEDEREQUEST时执行common.inc.php内部定义函数进来的操作，首页我们分析一下，作为mvc每次都要经过index.php,为comminc.php在前面，所以刚开始的时候DEDEREQUEST为false，所以经过了common.inc.php,然后在包含request.php,其实执行request.php;

 

好了，我们来分析一下代码：

 

// REQUEST常量,用于判断是否启用REQUEST类

define('DEDEREQUEST', TRUE);

dede注释已经讲的很清楚了..........

=======================

我们来看第二段

//简化 cls_request::item() 函数

function Request($key, $df='')

{

    $GLOBALS['request'] = isset($GLOBALS['request'])? $GLOBALS['request'] : new Request;

    if (!$GLOBALS['request']->isinit)

    {

        $GLOBALS['request']->Init();

    }

    return $GLOBALS['request']->Item($key, $df);

}

//其实他主要工作也就是注释写的，建好调用request类中的item方法，主要是他没有构造函数，所有封转一下调用很简单，就是检查当前是否存在该类，然后是否初始化，然后调用方法item，很简答啊..........

==================================================

我们来看第三段，其实讲的就request这个类了

class Request

{

 

    var $isinit = false;

    //用户的cookie

    var $cookies = array();

 

    //把GET、POST的变量合并一块，相当于 _REQUEST

    var $forms = array();

    

    //_GET 变量

    var $gets = array();

 

    //_POST 变量

    var $posts = array();

 

    //用户的请求模式 GET 或 POST

    var $request_type = 'GET';

 

    //文件变量

    var $files = array();

    

    //严禁保存的文件名

    var $filter_filename = '/\.(php|pl|sh|js)$/i';

 

   

    function Init()

    {

        global $_POST,$_GET;

        //处理post、get

        $formarr = array('p' => $_POST, 'g' => $_GET);

        foreach($formarr as $_k => $_r)

        {

            if( count($_r) > 0 )

            {

                foreach($_r as $k=>$v)

                {

                    if( preg_match('/^cfg_(.*?)/i', $k) )

                    {

                        continue;

                    }

                    $this->forms[$k] = $v;

                    if( $_k=='p' )

                    {

                        $this->posts[$k] = $v;

                    } else {

                        $this->gets[$k] = $v;

                    }

                }

            }

        }

        unset($_POST);

        unset($_GET);

        unset($_REQUEST);

        

        //处理cookie

        if( count($_COOKIE) > 0 )

        {

            foreach($_COOKIE as $k=>$v)

            {

                if( preg_match('/^config/i', $k) )

                {

                    continue;

                }

                $this->cookies[$k] = $v;

            }

        }

        //unset($_POST, $_GET);

        

        //上传的文件处理

        if( isset($_FILES) && count($_FILES) > 0 )

        {

            $this->filter_files($_FILES);

        }

        $this->isinit = TRUE;

        

        //global变量

        //self::$forms['_global'] = $GLOBALS;

    }

 

   

    function Myeval_r( $phpcode )

    {

        return eval_r( $phpcode );

    }

 

   

    function Item( $formname, $defaultvalue = '' )

    {

        return isset($this->forms[$formname]) ? $this->forms[$formname] :  $defaultvalue;

    }

 

   

    function Upfile( $formname, $defaultvalue = '' )

    {

        return isset($this->files[$formname]['tmp_name']) ? $this->files[$formname]['tmp_name'] :  $defaultvalue;

    }

 

   

    function FilterFiles( &$files )

    {

        foreach($files as $k=>$v)

        {

            $this->$files[$k] = $v;

        }

        unset($_FILES);

    }

 

   

    function MoveUploadFile( $formname, $filename, $filetype = '' )

    {

        if( $this->is_upload_file( $formname ) )

        {

            if( preg_match($this->filter_filename, $filename) )

            {

                return FALSE;

            }

            else

            {

                return move_uploaded_file($this->files[$formname]['tmp_name'], $filename);

            }

        }

    }

 

   

    function GetShortname( $formname )

    {

        $filetype = strtolower(isset($this->files[$formname]['type']) ? $this->files[$formname]['type'] : '');

        $shortname = '';

        switch($filetype)

        {

            case 'image/jpeg':

                $shortname = 'jpg';

                break;

            case 'image/pjpeg':

                $shortname = 'jpg';

                break;

            case 'image/gif':

                $shortname = 'gif';

                break;

            case 'image/png':

                $shortname = 'png';

                break;

            case 'image/xpng':

                $shortname = 'png';

                break;

            case 'image/wbmp':

                $shortname = 'bmp';

                break;

            default:

                $filename = isset($this->files[$formname]['name']) ? $this->files[$formname]['name'] : '';

                if( preg_match("/\./", $filename) )

                {

                    $fs = explode('.', $filename);

                    $shortname = strtolower($fs[ count($fs)-1 ]);

                }

                break;

        }

        return $shortname;

    }

 

   

    function GetFileInfo( $formname, $item = '' )

    {

        if( !isset( $this->files[$formname]['tmp_name'] ) )

        {

            return FALSE;

        }

        else

        {

            if($item=='')

            {

                return $this->files[$formname];

            }

            else

            {

                return (isset($this->files[$formname][$item]) ? $this->files[$formname][$item] : '');

            }

        }

    }

 

   

    function IsUploadFile( $formname )

    {

        if( !isset( $this->files[$formname]['tmp_name'] ) )

        {

            return FALSE;

        }

        else

        {

            return is_uploaded_file( $this->files[$formname]['tmp_name'] );

        }

    }

    

   

     function CheckSubfix($formname, $subfix = 'csv')

    {

        if( $this->get_shortname( $formname ) != $subfix)

        {

            return FALSE;

        }

        return TRUE;

    }

}

这个类不难，我讲讲关键的，看看类的成员就行了，主要是post和get请求变成forms数组，然后对文件的处理..

其实这里大家可以看到，过滤的更详细了，比如像文件传递，不知道dede为什么要写两次，comminc.php中的就像鸡肋，也许是改版的痛吧....

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转载于:https://www.cnblogs.com/jylf/p/3591850.html