php 模拟 asp.net webFrom 按钮提交事件的思路及代码_PHP
由于公司需要php方面的项目开发,php刚刚入门,在写按钮提交过程中,asp.net里的按钮事件更好些。先看下面的代码,
复制代码 代码如下:
require_once '../inc/EventHelper.php';
function Page_Load()
{
echo '在任何时候都会运行
';
if(!Page::IsPostBack())
{
echo '加载产品分类
';
if($_GET['cmd']=='edit')
{
echo '修改加载需要修改的产品信息
';
}
}
}
function bAdd_Click()
{
//Comm::CheckQX('产品管理_添加');
echo "bAdd_Click
";
}
function bEdit_Click()
{
//Comm::CheckQX('产品管理_修改');
echo 'proID='.$_GET['proID'].'
';
echo "bEdit_Click
";
}
function sdfsdfdsf_Click()
{
echo "e44444444444444444444
";
}
?>
做过asp.net开发的对上面的代码应该有点熟悉,如:Page_Load,Page.IsPostback,bAdd_Click,这些很像asp.net的事件。
以上代码在点击【添加】按钮时运行bAdd_Click函数(暂且这么叫,function好像是函数的意思),同样的,点击【修改】按钮自动运行bEdit_Click事件。不需要过多的参数变化,也不需要过多的文件,若页面功能不是很复杂的情况下,用这种模式可以快速开发。
下面来看看EventHelper.php这个文件的代码:
复制代码 代码如下:
class Page
{
//是否回发数据,1:是
public static function IsPostBack()
{
global $SYSRunEventName;
return !empty($SYSRunEventName);
}
//加载并执行事件
function EventLoad()
{
global $SYSRunEventName;
$arrEvent=get_defined_functions();
$arrEventUser=$arrEvent['user'];
$arr=array_keys($_POST);
foreach($arr as $row)
{
$name=strtolower($row);
foreach($arrEventUser as $row1)
{
$name1=str_ireplace('_click','',$row1);
if($name==$name1)
{
$SYSRunEventName=$row1;
break;
}
}
if(!empty($SYSRunEventName))
{
break;
}
}
if(function_exists('Page_Load'))
Page_Load();
$SYSRunEventRunName=strtolower($SYSRunEventName);
if(Page::IsPostBack())
{
$SYSRunEventName();
}
}
}
class Comm
{
public static function GetParam($params=array(),$cmd='addoverride')
{
$allParam=array();
if($cmd=='addoverride')
{
$arrKeys=array_keys($params);
foreach($arrKeys as $row)
{
if(!in_array($row,array_keys($allParam)))
$allParam[$row]=$params[$row];
}
}
else if($cmd=='del')
{
foreach($params as $row)
{
unset($_GET[$row]);
}
}
$arrKeys=array_keys($_GET);
foreach($arrKeys as $row)
{
if(!in_array($row,array_keys($allParam)))
$allParam[$row]=$_GET[$row];
}
$p='';
$arrKeys=array_keys($allParam);
foreach($arrKeys as $row)
{
$p.=$row.'='.$allParam[$row].'&';
}
return rtrim($p,'&');
}
}
Page::EventLoad();
?>
以上功能大家可以测试下,在我php5.4可以运行成功,不过在安全性方面还没考虑过多,看过一些文章php会有可能通过客户端执行php代码,因为php很许多实用的功能特性。
关于Comm::GetParam,由于经常需要获取get方式的参数,或修改参数,如分页时需要保留所有url参数,只修改分页参数(如page=5),所以就自行写了一些代码。
主要利用php以下几个特点:
function_exists
get_defined_functions
以及利用常用的表单提交原理,利用submit提交原理 实现功能的。
由于时间仓促,来不及说明具体原理,还请见谅,代码大家都可以看懂的。

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