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所属分类:PHP编程
我们可以用新闻系统来存储新闻,我们可以对新闻进行添加、删除等操作,这样减少了大家的工作量,为什么不实验一下。
首先,建立一个表。
- create table news (
- n_id int(255) not null auto_increment,
- n_date datetime not null,
- news text not null,
- primary key(n_id)
- );
第二步,设置你的登陆信息
- $database_user_name="root";
- $database_password="";
- $database_name="news";
- $time_offset="0";
第三步,让我们把后面程序用到的东西作成函数,节省篇幅啊!
- function connect_db()
- {
- // connects to the database
- global $database_user_name, $database_password;
- $db=mysql_connect("localhost",$database_user_name,$database_password);
- return $db;
- }
- function db_name()
- {
- // returns the name of the database
- global $database_name;
- $db_name=$database_name;
- return $db_name;
- }
- function get_now()
- {
- // gets current date and time
- $db=connect_db();
- $db_name=db_name();
- mysql_select_db($db_name,$db);
- $sql="select now() as now";
- $result=mysql_query($sql,$db);
- $myrow=mysql_fetch_array($result);
- $now=$myrow["now"];
- return $now;
- }
第四步,让我们考虑如何将新闻显示出来
//上面已经定义的函数库...
//表格的定义......
- <center><FONT SIZE=5 FACE="'georgia',verdana,Arial,Lucida Sans,Gill Sans">$title ";
- if ($admin==1)
- {
- echo " Admin ";
- }
- echo " - News</font>
- </td></tr>
- ";
- $db=connect_db();
- $db_name=db_name();
- mysql_select_db($db_name,$db);
- if ($show_news_sub)
- {
- $show_news = $show_news_sub;
- }
- if (!ereg("([0-9]{".strlen($show_news)."})",$show_news))
- {
- $show_news="ALL";
- }
- if (strtoupper($show_news)=="ALL")
- {
- $sql="select date_format(n_date,'%m/%d/%Y') as n_date, date_format(n_date,'%H:%i') as n_time ,news , n_date as date from news order by date desc";
- }
- else
- {
- $link="<a href=$REQUEST_URL?show_news_sub=ALL><FONT SIZE=-2 FACE="'georgia',verdana,Arial,Lucida Sans,Gill Sans">All news</font></a>";
- $sql="select date_format(n_date,'%m/%d/%Y') as n_date, date_format(n_date,'%H:%i') as n_time , news , n_date as date from news order by n_date desc limit $show_news";
- }
- $result=mysql_query($sql,$db);
- $num_rows=mysql_num_rows($result);
- if($num_rows!=0)
- {
- echo "
- ";
- while($myrow=mysql_fetch_array($result))
- {
- $date=$myrow["n_date"];
- $time=$myrow["n_time"];
- $news=$myrow["news"];
- $n_id=$myrow["n_id"];
- if (strtoupper($show_date)=="Y" && strtoupper($show_time)=="Y")
- {
- $show=$date." ".$time;
- }
- else if (strtoupper($show_date)=="Y" && strtoupper($show_time)!="Y")
- {
- $show=$date;
- }
- if (strtoupper($show_date)!="Y" && strtoupper($show_time)=="Y")
- {
- $show=$time;
- }
- $cleannews=(nl2br($news));
- <TD align=left><FONT SIZE=-2 FACE="'verdana',Arial,Lucida Sans,Gill Sans">$show<br>$cleannews</font</TD>
- ";
- }
- echo "
- ";
- }
- if ($admin==1)
- {
- echo "
- <center><a href=admin/index.php><FONT SIZE=-2 FACE="'verdana',Arial,Lucida Sans,Gill Sans">返回</font></a></center>
- ";
- }
- if ($link)
- {
- echo "<center><br><br>$link</center>";
- }
说明:省略了格式方面的标签,这样看起来思路清晰些,你可要加上啊