php留言系统（2）

1、参照之前的（mvc框架总结）将整体框架定下来之后，那么请求默认参数将变为：

<span>//</span><span>默认请求首页：    </span><span>//</span><span>P=front    </span><span>//</span><span>C=fIndex    </span><span>//</span><span>A=show</span>

1.1 找到控制器fIndexController下的动作：

<span>//</span><span>首页展示动作</span>        <span>public</span><span> function showAction()        {            </span><span>//</span><span>防止恶意调用</span>            $<span>this</span>-><span>checkAuthority();            </span><span>//</span><span>不需要具体模型，直接载入模版</span>            require CUR_VIE_PATH.<span>'</span><span>index.html</span><span>'</span><span>;        }</span>

2、防止恶意调用这一块放于我们的Controller层

搞代gaodaima码面，所有模型几乎都要用到，因此将其放于基础模型，、

<span>/*</span><span>     * 防止恶意调用方法，适用于全部方法     </span><span>*/</span>    <span>protected</span><span> function checkAuthority()    {        </span><span>if</span>(!defined(<span>'</span><span>IN_NG</span><span>'</span><span>))        {            exit(</span><span>"</span><span>you no authority</span><span>"</span><span>);        }    }</span>

随时调用该方法

3、拒绝php低版本，由于总是在运行，所以直接放入初始文件Framework.class.php

4.1将 CSS做成包含文件

每个页面都要导入CSS，着实麻烦，我们定一个文件title.inc.html。

但是每个页面却有一个不相同的CSS，那么可以定义一个常量来证明本页。

define(‘SCRIPT’,’index’);

<title>Your Title</title>    <?<span>php        require </span><span>'</span><span>application/view/front/title.inc.html</span><span>'</span>    ?>

其中title.inc.html代码

<link rel=<span>"</span><span>shortcut icon</span><span>"</span> href=<span>"</span><span>favicon.ico</span><span>"</span> /><link rel=<span>"</span><span>stylesheet</span><span>"</span> type=<span>"</span><span>text/css</span><span>"</span> href=<span>"</span><span>public/front/css/1/basic.css</span><span>"</span> /><link rel=<span>"</span><span>stylesheet</span><span>"</span> type=<span>"</span><span>text/css</span><span>"</span> href=<span>"</span><span>public/front/css/1/<?php echo SCRIPT?>.css</span><span>"</span> />

5.2 创建注册页面register.html

<span>参数请求为：    请求注册页        P</span>=<span>front        C</span>=<span>fRegister        A</span>=show

代码为：

<div id=<span>"</span><span>register</span><span>"</span>>        <h2>会员注册</h2>        <form method=<span>"</span><span>post</span><span>"</span> action=<span>"</span><span>post.php</span><span>"</span>>            <dl>                <dt>请认真填写一下内容</dt>                <dd><span>                    用 户 名：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>username</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />(*<span>必填，至少两位)                </span></dd>                <dd><span>                    密 码：</span><input type=<span>"</span><span>password</span><span>"</span> name=<span>"</span><span>password</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />(*<span>必填，至少六位)                </span></dd>                <dd><span>                    确认密码：</span><input type=<span>"</span><span>password</span><span>"</span> name=<span>"</span><span>notpassword</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />(*<span>必填，同上)                </span></dd>                <dd><span>                    密码提示：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>passt</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />(*<span>必填，至少两位)                </span></dd>                <dd><span>                    密码回答：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>passd</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />(*<span>必填，至少两位)                </span></dd>                <dd><span>                    性 别：</span><input type=<span>"</span><span>radio</span><span>"</span> name=<span>"</span><span>sex</span><span>"</span> value=<span>"</span><span>男</span><span>"</span> <span>checked</span>=<span>"</span><span>checked</span><span>"</span> /><span>男                    </span><input type=<span>"</span><span>radio</span><span>"</span> name=<span>"</span><span>sex</span><span>"</span> value=<span>"</span><span>女</span><span>"</span> /><span>女                </span></dd>                <dd <span>class</span>=<span>"</span><span>face</span><span>"</span>>                    "</span><span>public/front/face/m01.gif</span><span>"</span> alt=<span>"</span><span>头像选择</span><span>"</span><span>                        onclick</span>=<span>"</span><span>javascript:window.open('face.php','face','width=400,height=400,top=0,left=0')</span><span>"</span> />                </dd>                <dd><span>                    电子邮件：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>email</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />                </dd>                <dd><span>                    Q Q ：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>qq</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> />                </dd>                <dd><span>                    主页地址：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>url</span><span>"</span> <span>class</span>=<span>"</span><span>text</span><span>"</span> value=<span>"</span><span>http://</span><span>"</span> />                </dd>                <dd><span>                    验 证 码：</span><input type=<span>"</span><span>text</span><span>"</span> name=<span>"</span><span>yzm</span><span>"</span> <span>class</span>=<span>"</span><span>text yzm</span><span>"</span> />                </dd>                <dd>                    <input type=<span>"</span><span>submit</span><span>"</span> <span>class</span>=<span>"</span><span>submit</span><span>"</span> value=<span>"</span><span>注册</span><span>"</span> />                </dd>            </dl>            </div>

5.3点击头像弹出选择头像框：

"</span><span>public/front/face/m01.gif</span><span>"</span> alt=<span>"</span><span>头像选择</span><span>"</span><span>                        onclick</span>=<span>"</span><span>javascript:window.open('face.php','face','width=400,height=400,top=0,left=0')</span><span>"</span> />

这个页面存放着64 张头像页面，可以通过数组循环的方式罗列出来

<?php <span>foreach</span> (range(<span>1</span>,<span>9</span>) <span>as</span> $number) {?><dd>"</span><span>face/m0<?php%20echo%20$number?>.gif</span><span>"</span> /></dd><?php }?>

6．提交数据
将数据提交到本页，必须做一个名值对，用来判断是否提交了数据。

?action=<span>register也可以设计一个隐藏字段来做名值对</span><<span>inputtype</span>=<span>"</span><span>hidden</span><span>"</span><span>name</span>=<span>"</span><span>action</span><span>"</span><span>value</span>=<span>"</span><span>register</span><span>"</span>/>

6.1核对验证码
验证码的用途是为了防止恶意注册和一些表单伪造跨站攻击等。
验证码里保存在session 里面，可以判断是否是当前表单提交，而刷新一次后验证码随
即变化，又可以防止多次恶意注册。

<span>if</span> (!($_POST[<span>'</span><span>yzm</span><span>'</span>] == $_SESSION[<span>'</span><span>code</span><span>'</span><span>])) {_alert_back(</span><span>'</span><span>验证码有误，请重新输入！</span><span>'</span><span>);}</span>

6.2．接受数据

<span>设计变量，将数据提交出来赋值给变量$_username</span>=<span>$_POST[</span><span>'</span><span>username</span><span>'</span><span>];也可以通过一个数组来存放提交过来的值$_clean</span>=<span>array();$_clean[</span><span>'</span><span>username</span><span>'</span><span>]</span>=<span>$_POST[</span><span>'</span><span>username</span><span>'</span>]

6.3各种限制与过滤

<span>1.首先，必须去掉两边的空格$_string </span>= trim($_string);

<span>2.其次长度限制</span><span>if</span> (mb_strlen($_string,<span>'</span><span>utf-8</span><span>'</span>) < $_min_num || mb_strlen($_string,<span>'</span><span>utf-8</span><span>'</span>) > $_max_num)

<span>3.敏感字符限制$_char_pattern </span>= <span>'</span><span>/[\'\"\ \ ]/</span><span>'</span><span>;</span><span>if</span> (preg_match($_char_pattern,$_string)) {}

<span>4.敏感用户名限制$_mg[</span><span>0</span>] = <span>'</span><span>22</span><span>'</span><span>;$_mg[</span><span>1</span>] = <span>'</span><span>11</span><span>'</span><span>;$_mg[</span><span>2</span>] = <span>'</span><span>33</span><span>'</span><span>;</span><span>foreach</span> ($_mg <span>as</span><span> $value) {$_mg_string .</span>= <span>'</span><span>[</span><span>'</span>.$value.<span>'</span><span>]</span><span>'</span>.<span>'</span><span>\n</span><span>'</span><span>;}</span><span>if</span><span> (in_array($_string,$_mg)) {_alert_back($_mg_string.</span><span>'</span><span>以上敏感用户名不得注册！</span><span>'</span><span>);}</span>

<span>5.转义输入，有效防止SQL 注入问题</span><span>//</span><span>mysql_escape_string();</span><span>//</span><span>addslashes()</span><span>return</span> mysql_real_escape_string($_string); <span>//</span><span>这个mysql_是需要连接数据库的</span>

以上就介绍了php留言系统（2），包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。

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