PHP练习项目笔记之COOKIES，php练习cookies

PHP练习项目笔记之COOKIES，php练习cookies

主要是在登录和退出的时候，设置cookies。来保存登录和安全退出

1:在登录页面设置

//设置cookies的值
_setcookies($_rows['tg_username'], $_rows['tg_uniqid'],$_clean['time']);
_location(null,'index.php');

第二步：生成cookie,

<span>/*</span><span>*
 * _setcookies
 * @param unknown $_username
 * @param unknown $_uniqid
 </span><span>*/</span>
<span>function</span> _setcookies(<span>$_username</span>,<span>$_uniqid</span>,<span>$_time</span><span>){
    </span><span>setcookie</span>('username',<span>$_username</span><span>);
    </span><span>setcookie</span>('uniqid',<span>$_uniqid</span><span>);
    </span><span>switch</span> (<span>$_time</span><span>) {
        </span><span>case</span> '0' : <span>//</span><span> 设置浏览器进程</span>
            <span>setcookie</span> ( 'username', <span>$_username</span><span> );
            </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span><span> );
            </span><span>break</span><span>;
        </span><span>case</span> '1' : <span>//</span><span> 一天的进程</span>
            <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 86400<span> );
            </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 86400<span> );
            </span><span>break</span><span>;
        </span><span>case</span> '2' : <span>//</span><span> 一周的进程</span>
            <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 604800<span> );
            </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 604800<span> );
            </span><span>break</span><span>;
        </span><span>case</span> '0' : <span>//</span><span> 一个月的进程</span>
            <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 2592000<span> );
            </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 2592000<span> );
            </span><span>break</span><span>;
    }
}</span>

第三步：登录状态中设置

<span>//</span><span>登录的情况,就是防止登陆后通过在浏览器中直接连接再次登录</span>
<span>function</span><span> _login_state(){
    </span><span>if</span> (!<span>isset</span>(<span>$_COOKIE</span>['username'<span>])) {
        _alert_back(</span>"登录状态无法就行本操作！"<span>);
    }
}</span>

<span>//</span><span>删除cookies</span>
<span>function</span><span> _unsetcookies(){
    </span><span>setcookie</span>('username','',<span>time</span>()-1<span>);
    </span><span>setcookie</span>('uniqid','',<span>time</span>()-1<span>);
    _session_destroy();</span><span>//</span><span>删除session</span>
    _location(<span>null</span>,'index.php'); <span>//</span><span>做跳转</span>
}

第四步在登录页面和退出页面加上

<span>//</span><span>登录状态</span>
    _login_state();

显示数据的二个方法：在数据配置文件中配置，我的是mysql.func.php

<span>/*</span><span>*
 * _fetch_array 只能获取一条数据组
 * @param $_sql
 </span><span>*/</span>

<span>function</span> _fetch_array(<span>$_sql</span><span>) {
    </span><span>return</span> <span>mysql_fetch_array</span>(_query(<span>$_sql</span>),<span>MYSQL_ASSOC);
}
</span><span>/*</span><span>*
 * _fetch_array_list可以返回指定数据集的所有数据
 * @param unknown $_result
 * @return multitype:
 </span><span>*/</span>
<span>function</span> _fetch_array_list(<span>$_result</span><span>){
    </span><span>return</span> <span>mysql_fetch_array</span>(<span>$_result</span>,<span>MYSQL_ASSOC);
}</span>

最后在页面中赋值

<span>//</span><span>从数据库里提取数据获取结果集
//我们必须每次重新读取结果集，而不是从新去执行SQL语句。</span>
<span>$_result</span> = _query("SELECT tg_username,tg_sex,tg_face FROM tg_user ORDER BY tg_reg_time DESC"<span>);

</span><?php <span>while</span> (!!<span>$_rows</span> = _fetch_array_list(<span>$_result</span>)) {?>
    <<span>dl</span>>
        <dd <span>class</span>="user"><?php <span>echo</span> <span>$_rows</span>['tg_username']?><?php <span>echo</span> <span>$_rows</span>['tg_sex']?></dd>
        <dt><img  src="<?php echo <span alt="PHP练习项目笔记之COOKIES，php练习cookies" >$_rows</span>['tg_face']?>" alt="" /></dt>