我的申请结构:
E:\ wamp \ www \ mobile \ module \ mod_expense.php CLASS NAME:mod_expense说明:包含INSERT,DELETE,UPATE操作以及此clas扩展con_class CLASS
E:\ wamp \ www \ mobile \ controller \ _control_busniss.php CLASS NAME:con_class说明:包含选择查询业务逻辑
E:\ wamp \ www \ mobile \ view \ expenditure \ expense.php 说明:包含expense.html CLASS和contr_busniss.php CLASS目的:使用此文件运行应用程序,例如要显示费用添加表格,那么我的网址看起来像 http://localhost/mobile/view/expenditure/expense.php?fp = add 费用查看表格,然后我的网址看起来像http://localhost/mobile/view/expenditure/expense.php?fp=view
E:\ wamp \ www \ mobile \ view \ expenditure \ expense.html.php CLASS NAME:expense_html_form说明:包含FORM(ADD费用,编辑费用,查看费用)以及此clas扩展con_class CLASS
现在我有数据库类:CLASS Name是DB_Class,我想在mod_expense.php&中使用这些类函数。 expense.html.php,我对OOPS并不太熟悉,
目前这些文件已经扩展了con_class CLASS,现在我想扩展Database类,如何在这里扩展DB CLASS,
我的片段很少:
文件名:expense.php
include("../../include/config.php");
include("../../include/dbclass.php");
include_once("expense.html.php");
include("../../controller/con_error.php");
include_once("mod_expense.php");
$obj_dbclass = new dbClass();
$obj_dbclass->db_connect();
$expense_object = new expense_html_form();
$expense_object->expense_add();
if(isset($_POST['submit'])){
$mod_expense = new mod_expense();
echo $mod_expense->ins_expense();
}
文件名:expense.html.php
class expense_html_form{
function expense_add(){
ADD FORM
}
}
文件名:mod_expense.php
class mod_expense extends con_class{
function ins_expense(){
EXPENSE ADD FUNCTIONALITY
}
}
文件名:contr_busniss.php
class con_class{
function check_already_exist($amount){
echo "SELECT expense_amount FROM expense WHERE expense_amount = '$amount'";
$select=mysql_query("SELECT count(expense_amount) FROM expense WHERE expense_amount = '$amount'");
$row=mysql_fetch_array($select);
$op=$row[0];
return $op;
}
}
现在我想扩展DBClass函数。建议如何实现。
答案 0 :(得分:0)
我认为,当你的情况更好时,你可能会尝试用继承来完成太多。您可以将$dbClass
的引用传递给控制器,以便它们可以访问数据库功能。
从您的类的名称我假设您正在尝试使用模型 - 视图 - 控制器,在这种情况下,我建议不要将DB_class
功能公开给expense_html_form
。您应该在控制器中执行任何必要的计算,并将最终结果提供给视图。
如果您绝对必须使用继承,则expense_html_form
和con_class
扩展DB_class
会将这些方法公开给expense_html_form
和mod_expense
。