使用PHP制作新聞系統的思路

我們可以用新聞系統來存儲新聞,我們可以對新聞進行添加、刪除等操作,這樣減少瞭大傢的工作量,為什麼不實驗一下。

首先,建立一個表。
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,設置你的登陸信息
$database_user_name=”root”;
$database_password=””;
$database_name=”news”;
$time_offset=”0″;

第三步,讓我們把後面程序用到的東西作成函數,節省篇幅啊!

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,讓我們考慮如何將新聞顯示出來


//上面已經定義的函數庫…
//表格的定義……
<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>”;

}
說明:省略瞭格式方面的標簽,這樣看起來思路清晰些,你可要加上啊


 

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