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......

  <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

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