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看PHP怎么实现多关键字加亮

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Release: 2016-06-13 13:22:59
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看PHP如何实现多关键字加亮

实现代码:

conn.php

??? ??? $conn = @ mysql_connect("localhost", "root", "") or die("数据库链接错误");?
??? mysql_select_db("form", $conn);?
??? mysql_query("set names 'gbk'");??
??? ?>
searchAndDisplayWithColor.php
?
?

??? ??? include 'conn.php';?
??? ?>?
???

?
???????? ?
???????? ?
???????????? ?
???????? ?
???????? ?
????
关键字:?
????????????
?
??????
???? ???????? cellspacing="1" bgcolor="#add3ef">?
???????? ???????? //关键字不为空的时候才执行相关搜索?
???????? if($_GET['keyWord']){?
???????? //用空格符把关键字分割开?
???????? $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)){?
???????????? //替换关键字,并且把关键字高亮显示?
???????????? $row[title]=preg_replace("/$key[0]/i", "$key[0]", $row[title]);?
???????????? $row[title]=preg_replace("/$key[0]/i", "$key[1]", $row[title]);?
???????????? $row[content]=preg_replace("/$key[0]/i", "$key[0]", $row[content]);?
???????????? $row[content]=preg_replace("/$key[1]/i", "$key[1]", $row[content]);?
???????????? ?>?
??????
???????? ?
???????????? ?
???????? ?
???????? ?
???????????? ?
???????? ?
???????? ?
???????????? ?
???????? ?
???????? ???????? }?
???????? ?>?
????
标题:=$row[title]?> 用户:=$row[user] ?>?
???????????? ?
????????????
内容:=$row[content]?>
?
????????????
发表日期:=$row[lastdate]?>
?
????????????


说明:在这个小程序中,有一点不足之处在于,只能同时搜索两个关键字,并且中间用空格" "隔开,如果只是搜索一个关键字,如:"大"
显示的时候会出现乱码 ……^|_|^,这是由于下面代码的结果:

???? //用空格符把关键字分割开?
???? $key=explode(' ', $_GET[keyWord]);

如果要改进的话,在这里的后面就要做一下判断了。
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