php留言系統（2）

1、參照之前的（mvc框架總結）將整體框架定下來之後，那麼請求預設參數將變成：

<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下的動作：

<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、防止惡意調用這一塊放於我們的Controller層面，所有模型幾乎都要用到，因此將其放於基礎模型，、

<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>

隨時呼叫該方法

3、拒絕php低版本，由於總是在運行，所以直接放入初始檔案Framework.class.php

4.1將 CSS做成包含檔案

每個頁面都要導入CSS，著實麻煩，我們定一個檔title.inc.html。

但是每個頁面卻有一個不相同的CSS，那麼可以定義一個常數來證明本頁。

define('SCRIPT','index');

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

其中title.inc.html程式碼

<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> />

5.2 建立註冊頁面register.html

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

代碼為：

<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>>
                    <img src=<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>
        </form>
    </div>

5.3點選頭像彈出選擇頭像框：

<img src=<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> />

這個頁面存放著64 張頭像頁面，可以透過數組循環的方式羅列出來

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

 6．提交資料
將資料提交到本頁，必須做一個名值對，用來判斷是否提交了資料。

?action=<span>register
也可以设计一个隐藏字段来做名值对
</span><<span>input
type</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核對驗證碼
驗證碼的用途是為了防止惡意註冊和一些表單偽造跨站攻擊等。
驗證碼裡保存在session 裡面，可以判斷是否是當前表單提交，而刷新一次後驗證碼隨
即變化，又可以防止多次惡意註冊。

<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．接受數據

<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各種限制與過濾

<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>

以上就介紹了php留言系統（2），包含了方面的內容，希望對PHP教學有興趣的朋友有幫助。