使用PHP制作新闻系统的思路

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......

  1<center><font face="'georgia',verdana,Arial,Lucida Sans,Gill Sans" size="5">$title ";   
  2if ($admin==1)   
  3{   
  4  
  5echo " Admin ";   
  6}   
  7  
  8echo " - News</font>
  9   
 10";   
 11  
 12  
 13$db=connect_db();   
 14$db_name=db_name();   
 15mysql_select_db($db_name,$db);   
 16  
 17if ($show_news_sub)   
 18{   
 19$show_news = $show_news_sub;   
 20}   
 21  
 22  
 23if (!ereg("([0-9]{".strlen($show_news)."})",$show_news))   
 24{   
 25$show_news="ALL";   
 26}   
 27  
 28if (strtoupper($show_news)=="ALL")   
 29{   
 30  
 31$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";   
 32  
 33}   
 34else   
 35{   
 36  
 37$link="<a href="$REQUEST_URL?show_news_sub=ALL"><font face="'georgia',verdana,Arial,Lucida Sans,Gill Sans" size="-2">All news</font></a>";   
 38  
 39  
 40$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 $show_news";   
 41}   
 42$result=mysql_query($sql,$db);   
 43$num_rows=mysql_num_rows($result);   
 44if($num_rows!=0)   
 45{   
 46echo "   
 47  
 48  
 49";   
 50  
 51while($myrow=mysql_fetch_array($result))   
 52{   
 53$date=$myrow["n_date"];   
 54$time=$myrow["n_time"];   
 55$news=$myrow["news"];   
 56$n_id=$myrow["n_id"];   
 57if (strtoupper($show_date)=="Y" &amp;&amp; strtoupper($show_time)=="Y")   
 58{   
 59$show=$date." ".$time;   
 60  
 61}   
 62else if (strtoupper($show_date)=="Y" &amp;&amp; strtoupper($show_time)!="Y")   
 63{   
 64$show=$date;   
 65  
 66}   
 67if (strtoupper($show_date)!="Y" &amp;&amp; strtoupper($show_time)=="Y")   
 68{   
 69$show=$time;   
 70  
 71}   
 72  
 73$cleannews=(nl2br($news));   
 74  
 75  
 76<td align="left"><font face="'verdana',Arial,Lucida Sans,Gill Sans" size="-2">$show<br/>$cleannews   
 77  
 78  
 79  
 80";   
 81}   
 82echo "   
 83  
 84";   
 85  
 86  
 87  
 88  
 89}   
 90if ($admin==1)   
 91{   
 92echo "   
 93<center><a href="admin/index.php"><font face="'verdana',Arial,Lucida Sans,Gill Sans" size="-2">返回</font></a></center>   
 94";   
 95}   
 96  
 97if ($link)   
 98{   
 99echo "<center><br/><br/>$link</center>";   
100  
101}   
102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   
103  
104  
105【本文版权归作者与奥索网共同拥有，如需转载，请注明作者及出处】</font></td></center>