php实现搜索多关键词高亮显示程序代码

<?php
 include 'conn.php';
 ?>
 
 <table width=500 align="center">
     <form action="" method="get">
     <tr>
         <td>关键字：<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
     //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", "<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>标题：<font color="black"><?=$row[title]?></font> 用户：<font color="black"><?=$row[user] ?></font>
         <div align="right"><a href="preEdit.php?id=<?=$row[id]?>">编辑</a>&nbsp;&nbsp;|&nbsp;&nbsp;<a
             href="delete.php?id=<?=$row[id]?>">删除</a></div>
         </td>
     </tr>
     <tr bgColor="#ffffff">
         <td>内容：<?=$row[content]?></td>
     </tr>
     <tr bgColor="#ffffff">
         <td>
         <div align="right">发表日期：<?=$row[lastdate]?></div>
         </td>
     </tr>
     <?php }
     }
     ?>
 </table>

<?php
// 说明：PHP中二维数组的排序方法

 
/**
 * @package     BugFree
 * @version     $Id: FunctionsMain.inc.php,v 1.32 2005/09/24 11:38:37 wwccss Exp $
 *
 *
 * Sort an two-dimension array by some level two items use array_multisort() function.
 *
 * sysSortArray($Array,"Key1","SORT_ASC","SORT_RETULAR","Key2"……)
 * @author                      Chunsheng Wang <wwccss@263.net>
 * @param  array   $ArrayData   the array to sort.
 * @param  string  $KeyName1    the first item to sort by.
 * @param  string  $SortOrder1  the order to sort by("SORT_ASC"|"SORT_DESC")
 * @param  string  $SortType1   the sort type("SORT_REGULAR"|"SORT_NUMERIC"|"SORT_STRING")
 * @return array                sorted array.
 */
function sysSortArray($ArrayData,$KeyName1,$SortOrder1 = "SORT_ASC",$SortType1 = "SORT_REGULAR")
{
    if(!is_array($ArrayData))
    {
        return $ArrayData;
    }
 
    // Get args number.
    $ArgCount = func_num_args();
 
    // Get keys to sort by and put them to SortRule array.
    for($I = 1;$I < $ArgCount;$I ++)
    {
        $Arg = func_get_arg($I);
        if(!eregi("SORT",$Arg))
        {
            $KeyNameList[] = $Arg;
            $SortRule[]    = '$'.$Arg;
        }
        else
        {
            $SortRule[]    = $Arg;
        }
    }
 
    // Get the values according to the keys and put them to array.
    foreach($ArrayData AS $Key => $Info)
    {
        foreach($KeyNameList AS $KeyName)
        {
            ${$KeyName}[$Key] = $Info[$KeyName];
        }
    }
 
    // Create the eval string and eval it.
    $EvalString = 'array_multisort('.join(",",$SortRule).',$ArrayData);';
    eval ($EvalString);
    return $ArrayData;
}
 
//################# 示例 #################
$arr = array(
    array(
        'name'      =>   '学习',
        'size'      =>   '1235',
        'type'      =>   'jpe',
        'time'      =>   '1921-11-13',
        'class'     =>   'dd',
    ),
    array(
        'name'      =>   '中国功夫',
        'size'      =>   '153',
        'type'      =>   'jpe',
        'time'      =>   '2005-11-13',
        'class'     =>   'jj',
    ),
    array(
        'name'      =>   '编程',
        'size'      =>   '35',
        'type'      =>   'gif',
        'time'      =>   '1997-11-13',
        'class'     =>   'dd',
    ),
    array(
        'name'      =>   '中国功夫',
        'size'      =>   '65',
        'type'      =>   'jpe',
        'time'      =>   '1925-02-13',
        'class'     =>   'yy',
    ),
    array(
        'name'      =>   '中国功夫',
        'size'      =>   '5',
        'type'      =>   'icon',
        'time'      =>   '1967-12-13',
        'class'     =>   'rr',
    ),
);
 
print_r($arr);
 
//注意：按照数字方式排序时 153 比 65 小
$temp = sysSortArray($arr,"name","SORT_ASC","type","SORT_DESC","size","SORT_ASC","SORT_STRING");
 
print_r($temp);
 
?>

<?php
$conn = @ mysql_connect("localhost", "root", "") or die("数据库链接错误"); mysql_select_db("form", $conn);
mysql_query("set names 'GBK'"); //使用GBK中文编码;
//替换空格，回车键
function htmtocode($content)
{
$content = str_replace("n", "<br>", str_replace(" ", "&nbsp;", $content));
return $content;
}
?>

<?php
 
     function _PAGEFT($totle, $displaypg = 20, $url = '') {
 
         global $page, $firstcount, $pagenav, $_SERVER;
 
         $GLOBALS["displaypg"] = $displaypg;
 
        if (!$page)
             $page = 1;
         if (!$url) {
             $url = $_SERVER["REQUEST_URI"];
         }

         //URL分析：
         $parse_url = parse_url($url);
        $url_query = $parse_url["query"]; //单独取出URL的查询字串
         if ($url_query) {
            $url_query = ereg_replace("(^|&)page=$page", "", $url_query);
            $url = str_replace($parse_url["query"], $url_query, $url);
            if ($url_query)
                 $url .= "&page";
             else
                $url .= "page";
         } else {
             $url .= "?page";
         }
         $lastpg = ceil($totle / $displaypg); //最后页，也是总页数
         $page = min($lastpg, $page);
        $prepg = $page -1; //上一页
        $nextpg = ($page == $lastpg ? 0 : $page +1); //下一页
        $firstcount = ($page -1) * $displaypg;

         //开始分页导航条代码：
         $pagenav = "显示第 <B>" . ($totle ? ($firstcount +1) : 0) . "</B>-<B>" . min($firstcount + $displaypg, $totle) . "</B> 条记录，共 $totle 条记录";
 
       //如果只有一页则跳出函数：
        if ($lastpg <= 1)
            return false;

         $pagenav .= " <a href='$url=1'>首页</a> ";
         if ($prepg)
            $pagenav .= " <a href='$url=$prepg'>前页</a> ";
         else
            $pagenav .= " 前页 ";
         if ($nextpg)
             $pagenav .= " <a href='$url=$nextpg'>后页</a> ";
        else
             $pagenav .= " 后页 ";
         $pagenav .= " <a href='$url=$lastpg'>尾页</a> ";
 
        //下拉跳转列表，循环列出所有页码：
         $pagenav .= "　到第 <select name='topage' size='1' onchange='window.location="$url="+this.value'>n";
         for ($i = 1; $i <= $lastpg; $i++) {
             if ($i == $page)
                $pagenav .= "<option value='$i' selected>$i</option>n";
             else
                $pagenav .= "<option value='$i'>$i</option>n";
        }
        $pagenav .= "</select> 页，共 $lastpg 页";
     }

 include("conn.php");
 
 $result=mysql_query("SELECT * FROM `test`");
$total=mysql_num_rows($result);
 //调用pageft()，每页显示10条信息（使用默认的20时，可以省略此参数），使用本页URL（默认，所以省略掉）。
 _PAGEFT($total,5);
 echo $pagenav;
 
 $result=mysql_query("SELECT * FROM `test` limit $firstcount,$displaypg ");
 while($row=mysql_fetch_array($result)){
 
 echo "<hr><b>".$row[name]." | ".$row[sex];
 
 }
 ?>

function bubbleSort(&$myarr){
$temp=0;//定义一个中间变量
//外层循环
for($i=0;$i<count($myarr)-1;$i++){
for($j=0;$j<count($myarr)-1-$i;
$j++){
if($myarr[$j]>$myarr[$j
+1]){
$temp=$myarr[$j];
$myarr[$j]=
$myarr[$j+1];
$myarr[$j+1]=
$temp;
}

}
}
}

$arry=array(2,6,-4,7,9,0);
bubbleSort($arry);
print_r($arry);

function selectSort(&$myarr){
$temp=0;
for($i=0;$i<count($myarr)-1;$i++){
//假设$i就是最小的数
$minval=$myarr[$i];
//记录我认为的最小数的下标
$minIndex=$i;

for($j=$i+1;$j<count($myarr);$j+
+){
//说明我们认为的最小值，不是最小
if($minval>$myarr[$j]){

$minval=$myarr[$j];
$minIndex=$j;

}

}
//最后交换
$temp=$myarr[$i];
$myarr[$i]=$myarr[$minIndex];
$myarr[$minIndex]=$temp;
}

}

<?
conn.php
$dbh=mysql_connect('localhost','root','123456');
mysql_select_db('DB','$dbh');
?>
在实际应用中，我们调用文件如：
require("conn.php")或者include("conn.php");
但是如果这样：
filename.php
require("conn.php");
function myfun($par1,$par2)
{包含对数据库处理的语句}
.....
myfun($par1,$par2);
.....
myfun($p1,$p2);
?>