使用PHP制作新闻系统的思路

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......

$title ";

if ($admin==1)

{

echo " Admin ";

}

echo " - News

";

$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="All news";

$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));

$show

$cleannews

";

}

echo "

";

}

if ($admin==1)

{

echo "

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