php message system (2), php message system
1. After the overall framework is determined with reference to the previous (mvc framework summary), the default parameters of the request will become:
<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 Find the action under the controller fIndexController:
<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. Preventing malicious calls is placed at our Controller level. It is used in almost all models, so it is placed in the basic model.
<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>
Call this method at any time
3. Reject the lower version of php. Since it is always running, put it directly into the initial file Framework.class.php
4.1 Make CSS an include file
Every page must import CSS, which is really troublesome. Let’s define a file title.inc.html.
But each page has a different CSS, so you can define a constant to prove this page.
define('SCRIPT','index');
<title>Your Title</title> <?<span>php require </span><span>'</span><span>application/view/front/title.inc.html</span><span>'</span> ?> </head>
where title.inc.html code
<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 Create registration page register.html
<span>参数请求为: 请求注册页 P</span>=<span>front C</span>=<span>fRegister A</span>=show
The code is:
<div id=<span>"</span><span>register</span><span>"</span>> <h2 id="会员注册">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 alt="php message system (2), php message system_PHP tutorial" >"</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 Click the avatar to pop up the avatar selection box:
<img src=<span alt="php message system (2), php message system_PHP tutorial" >"</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> />
This page stores 64 avatar pages, which can be listed through an array loop
<?php <span>foreach</span> (range(<span>1</span>,<span>9</span>) <span>as</span> $number) {?> <dd><img src=<span alt="php message system (2), php message system_PHP tutorial" >"</span><span>face/m0<?php echo $number?>.gif</span><span>"</span> /></dd> <?php }?>
6. Submit data
To submit data to this page, a name-value pair must be made to determine whether the data has been submitted.
?action=<span>register 也可以设计一个隐藏字段来做名值对 </span><<span>input type</span>=<span>"</span><span>hidden</span><span>"</span><span> name</span>=<span>"</span><span>action</span><span>"</span><span> value</span>=<span>"</span><span>register</span><span>"</span> />
6.1 Check the verification code
The purpose of the verification code is to prevent malicious registration and some form forgery cross-site attacks.
The verification code is stored in the session, which can be used to determine whether the current form is submitted. After refreshing once, the verification code changes with
, which can prevent multiple malicious registrations.
<span>if</span> (!($_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. Accept data
<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 Various restrictions and filtering
<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>

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。


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