PHP教程
<?php 
$conn = @ mysql_connect("localhost", "root", "") or die("數據庫鏈接錯誤"); 
mysql_select_db("form", $conn); 
mysql_query("set names 'gbk'"); 
?> 

PHP教程
<?php 
include 'conn.php'; 
?> 
<table width=500 align="center"> 
  <form action="" method="get"> 
  <tr> 
   <td>關鍵字：<input type="text" name="keyWord" /> 
   <input type="submit" value="搜索" /></td> 
  </tr> 
  </form> 
 </table> 
 
 <table width=500 border="0" align="center" cellpadding="5" 
  cellspacing="1" bgcolor="#add3ef"> 
  <?php 
  //關鍵字不為空的時候才執行相關搜索 
  if($_GET['keyWord']){ 
  //用空格符把關鍵字分割開 
  $key=explode(' ', $_GET[keyWord]); 
  $sql="select * from message where title like '$key[0]' or title like '$key[1]' or content like '$key[0]' or content like '%$key[1]%'"; 
  $query=mysql_query($sql); 
  while ($row=mysql_fetch_array($query)){ 
   //替換關鍵字,并且把關鍵字高亮顯示 
   $row[title]=preg_replace("/$key[0]/i", "<font color=red><b>$key[0]</b></font>", $row[title]); 
   $row[title]=preg_replace("/$key[0]/i", "<font color=red><b>$key[1]</b></font>", $row[title]); 
   $row[content]=preg_replace("/$key[0]/i", "<font color=red><b>$key[0]</b></font>", $row[content]); 
   $row[content]=preg_replace("/$key[1]/i", "<font color=red><b>$key[1]</b></font>", $row[content]); 
   ?> 
 
  <tr bgcolor="#eff3ff"> 
   <td>標題：<font color="black"><?=$row[title]?></font> 用戶：<font color="black"><?=$row[user] ?></font> 
   <div align="right"><a href="preEdit.php?id=<?=$row[id]?>">編輯</a>??|??<a 
    href="delete.php?id=<?=$row[id]?>">刪除</a></div> 
   </td> 
  </tr> 
  <tr bgColor="#ffffff"> 
   <td>內容：<?=$row[content]?></td> 
  </tr> 
  <tr bgColor="#ffffff"> 
   <td> 
   <div align="right">發表日期：<?=$row[lastdate]?></div> 
   </td> 
  </tr> 
  <?php } 
  } 
  ?> 
 </table> 

PHP教程
//用空格符把關鍵字分割開 
 $key=explode(' ', $_GET[keyWord]);