smarty模板原理和增删改查例题

Smarty模板：（前后端分离)
原理:核心是一个类,先修改配置文件，在使用的时候引入配置文件即可,（init.inc.php）
$smarty->assign("ceshi",$a);//注册变量到模板
$smarty->display("test.html");//前台显示

一、登录:login.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<form action="loginchuli.php" method="post">
<div>用户名：<input type="text" name="uid" /></div>
<div>密码：<input type="password" name="pwd" /></div>
<div><input type="submit" value="登录"/></div>
</form>
</body>
</html>

<?php
include("../init.inc.php");        //把smarty模板引进
$smarty->display("login.html");//在login.html页面写出登录界面,在login.php里执行

登录处理:loginchuli.php

<?php    //login登录处理界面
session_start();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
include("../DBDA.php");
$db = new DBDA();
$sql = "select pass from login where username = '{$uid}'";
$mm = $db->StrQuery($sql);
if($pwd != "" && $pwd==$mm)
{
    $_SESSION["uid"] = $uid;    
    header("location:main.php");
}
else
{
    header("location:login.php");    
}

二、主页面:main.html

#top{ 100%; height:50px}
#name{ float:right; height:50px; 100px; text-align:center; line-height:50px; vertical-align:middle}
</style>
</head>

<body>
<div id="top">
    <div id="name"><{$name}></div>    
</div>
<div>人员信息表</div>
<div>
    <table width="100%" border="1" cellpadding="0" cellspacing="0">
        <tr>
        <td>代号</td>
        <td>姓名</td>
        <td>性别</td>
        <td>民族</td>
        <td>生日</td>
        <td>操作</td>
        </tr>
        <{foreach $info as $v}>
        <tr>
        <td><{$v[0]}></td>
        <td><{$v[1]}></td>
        <td><{$v[2]|sex}></td>    <!--把之前的sex=0,1改为男,女,方法->modifier.sex.php(自写小插件)-->
        <td><{$v[3]|nation}></td>    <!--把之前的nation=n001,n002改为汉族,回族,方法->modifier.nation.php(自写小插件)-->
        <td><{$v[4]}></td>
        <td><a href="shanchu.php?code=<{$v[0]}>">删除</a><a href="xiugai.php?id=<{$v[0]}>">修改</a></td><!--给删除,修改传键值,此键值为主键值-->
        </tr>
        <{/foreach}>
    </table>
</div>
</body>

所用组件：

modifier.sex.php

<?php
function smarty_modifier_sex($sex)
{
    return $sex?"男":"女";    　　//ture返回'男',false返回'女'
}

modifier.nation.php

<?php
function smarty_modifier_nation($nation)
{
    $db = new MySQLi("localhost","root","2786802","text_zuoye");    //引入DBDA的类不可用,只能写入最原始方法来调用数据库
    $sql = "select name from nation where code = '{$nation}'";
    $result = $db->query($sql);
    $attr = $result->fetch_row();
    return $attr[0];
}

主页面:main.php

<?php
session_start();
include("../init.inc.php");
include("../DBDA.php");
$db = new DBDA();
if(empty($_SESSION["uid"]))    //判断session是否为空,不为空取值,为空跳登录页面
{
    header("location:login.php");    
    exit;
}
$uid = $_SESSION["uid"];
$sql = "select name from login where username = '{$uid}'";
$name = $db->StrQuery($sql);
$smarty->assign("name",$name);    //smarty取到登录的uid,到main.html取出显示
$sqli = "select * from info ";
$attr = $db->Query($sqli);
$smarty->assign("info",$attr);    //smarty取到info的数据放到数组,到main.html取出显示
$smarty->display("main.html");    //在本页面显示main.html的页面数据

三、修改页面:xiugai.html

<body>
<form action="gai.php" method="post">
<div><input name="code" type="hidden" value="<{$info[0]}>" /></div>
<div>姓名：<input name="name" type="text" value="<{$info[1]}>" /></div>
<div>性别:
    <input type="radio" name="sex" value="1" <{$info[2]|cksex}> />男 　　 <!--改为单选按钮,方法->modifier.ck1/ck.php(自写小插件)-->
    <input type="radio" name="sex" value="0" <{$info[2]|cksex1}> />女
</div>
<div>民族:
<!--民族改为下拉菜单显示,在xiugai.php页面查询出nation表的name,通过$nation接收,并且根据主键值通过循环给其所属的民族赋属性checked="checked",默认选中;-->
    <select name="nation">    
        <{foreach $nation as $v}>
            <{if $v[0]==$info[3]}>
            <option selected="selected" value="<{$v[0]}>"><{$v[1]}></option>
            <{else}>
            <option value="<{$v[0]}>"><{$v[1]}></option>
            <{/if}>
        <{/foreach}>
    </select>
</div>
<div>生日:<input name="birthday" type="text" value="<{$info[4]}>" /></div>
<input type="submit" value="修改" />
</form>
</body>

modifier_cksex.php

<?php
function smarty_modifier_cksex($sex)
{
    return $sex?"checked='checked'":"";    //如果为ture,checked='checked'
}

modifier_cksex1.php

<?php
function smarty_modifier_cksex1($sex)
{
    return $sex?"":"checked='checked'";    //如果为false,checked='checked'
}

修改页面:xiugai.php

<?php
$id = $_GET["id"];
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from info where code='{$id}'";
$attr = $db->Query($sql);
$sqlnation = "select * from nation";
$attrn = $db->Query($sqlnation);
include("../init.inc.php");        　　//执行修改要显示页面,把smarty模板引入
$smarty->assign("info",$attr[0]);    //$attr[0]赋给info,在html页面$info提取
$smarty->assign("nation",$attrn);    //xiugai.html页面民族改下拉菜单时用
$smarty->display("xiugai.html");    //把xiugai.html里面的内容拿过来在本页面显示

删除页面:shanchu.php

<?php
include("../DBDA.php");
$db = new DBDA();
$code = $_GET["code"];
$sql = "delete from info where code='{$code}'";
$db->Query($sql,0);
header("location:main.php");