1 <?php2 $conn = @ mysql_connect("localhost", "root", "") or die("数据库链接错误");3 mysql_select_db("form", $conn);4 mysql_query("set names 'gbk'"); 5 ?>

 1 <?php 2 include 'conn.php'; 3 ?> 4  5 <table width=500 align="center"> 6     <form action="" method="get"> 7     <tr> 8         <td>关键字：<input type="text" name="keyWord" /> 9         <input type="submit" value="搜索" /></td>10     </tr>11     </form>12 </table>13 14 <table width=500 border="0" align="center" cellpadding="5"15     cellspacing="1" bgcolor="#add3ef">16     <?php17     //关键字不为空的时候才执行相关搜索18     if($_GET['keyWord']){19     //用空格符把关键字分割开20     $key=explode(' ', $_GET[keyWord]);21     $sql="select * from message where title like '$key[0]' or title like '$key[1]' or content like '$key[0]' or content like '%$key[1]%'";22     $query=mysql_query($sql);23     while ($row=mysql_fetch_array($query)){24         //替换关键字，并且把关键字高亮显示25         $row[title]=preg_replace("/$key[0]/i", "<font color=red><b>$key[0]</b></font>", $row[title]);26         $row[title]=preg_replace("/$key[0]/i", "<font color=red><b>$key[1]</b></font>", $row[title]);27         $row[content]=preg_replace("/$key[0]/i", "<font color=red><b>$key[0]</b></font>", $row[content]);28         $row[content]=preg_replace("/$key[1]/i", "<font color=red><b>$key[1]</b></font>", $row[content]);29         ?>30 31     <tr bgcolor="#eff3ff">32         <td>标题：<font color="black"><?=$row[title]?></font> 用户：<font color="black"><?=$row[user] ?></font>33         <div align="right"><a href="preEdit.php?id=<?=$row[id]?>">编辑</a>&nbsp;&nbsp;|&nbsp;&nbsp;<a34             href="delete.php?id=<?=$row[id]?>">删除</a></div>35         </td>36     </tr>37     <tr bgColor="#ffffff">38         <td>内容：<?=$row[content]?></td>39     </tr>40     <tr bgColor="#ffffff">41         <td>42         <div align="right">发表日期：<?=$row[lastdate]?></div>43         </td>44     </tr>45     <?php }4