0616DBDA.class.php 代码
<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2016/6/16
* Time: 11:23
*/
class DBDA
{
public $host="localhost";//服务器地址
public $uid="root" ;//用户名
public $pwd="";//密码
public $dbconnect;//链接对象
function Query($sql,$type,$dbname="aaas")//sql语句；type语句类型，数字来表示；数据库的默认值
{
$this->dbconnect = new mysqli($this->host,$this->uid,$this->pwd,$dbname);
//判断是否出错
if(!mysqli_connect_error())
{
//如果连接成功,执行SQL语句
$result = $this->dbconnect->query($sql);
//根据语句类型判断
if($type==1)
{
//如果是查询语句,返回二维数组
return $result->fetch_all();
}
else
{
//如果是其他语句，返回true或false
return $result;
}
}
else
{
return "连接失败！";
}
}
}
【1.关键字查询，且关键字显示紫色】
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>关键字搜索界面</title>
</head>
<body>
<h1>查询页面</h1>
<form action="0616aacx.php" method="post">
<div>输入内容：<input type="text" name="name" >
<input type="submit" value="搜索"></div>
</form>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td>代号</td>
<td>名称</td>
<td>车型</td>
<td>发布时间</td>
<td>耗油</td>
</tr>
<?php
include("0616DBDA.class.php");
$db=new DBDA();
$tj="";
$name="";
if(!empty($_POST))
{
$name=$_POST["name"];
$tj="where name like ‘%{$name}%‘";
}
$sql="select * from car ".$tj;
echo $sql;
$attr=$db->query($sql,1);
foreach($attr as $v)
{
$re= "<span style=‘color:#ff33f1‘>{$name}</span>";
$str=str_replace($name,$re,$v[1]);
echo "
<tr>
<td>{$v[0]}</td>
<td>{$str}</td>
<td>{$v[2]}</td>
<td>{$v[3]}</td>
<td>{$v[4]}</td>
</tr>
";
}
?>
</table>
</body>
</html>
【2.多条件查询】
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>多条件查询</title>
</head>
<body>
<h1>查询页面</h1>
<form action="0616aaa.php" method="post">
<div>
输入汽车名称
<input type="text" name="name">
输入系列代号
<input type="text" name="brand">
<input type="submit" value="查询">
</div>
</form>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td>code</td>
<td>name</td>
<td>brand</td>
<td>time</td>
<td>oil</td>
<td>powers</td>
<tr>
<?php
//一般来说，用户不输入任何东西，默认查询所有的
include("0616DBDA.class.php");
$db=new DBDA();
$tj1=" 1=1";
$tj2=" 1=1";
$name="";
if(!empty($_POST))
{
if ($_POST["name"]!="")
{
$name = $_POST[‘name‘];
$tj1 = " name like ‘%{$name}%‘";
}
if ($_POST["brand"]!="")//如果不为空，进来
{
$tj2=" brand= ‘{$_POST[‘brand‘]}‘";
}
}
$cxtj=" where".$tj1." and ".$tj2;
$sql="select * from car ".$cxtj;//最后加空格,条件拼接起来
echo $sql;
$attr=$db->Query($sql,1);
foreach($attr as $v)
{
//处理输出字符串,改变颜色
$v[1];$name;
$re="<span style=‘color:chartreuse‘>{$name}</span>";
$str=str_replace($name,$re,$v[2]);
echo "
<tr>
<td>{$v[0]}</td>
<td>{$v[1]}</td>
<td>{$str}</td>
<td>{$v[3]}</td>
<td>{$v[4]}</td>
<td>{$v[5]}</td>
</tr>
";
}
?>
</table>
</body>
</html>
时间： 2024-10-30 13:37:35