查询
<?php
class DBDA
{
public $host = "localhost"; //数据库地址
public $uid = "root"; //数据库用户名
public $pwd = "123"; //数据库密码
//执行SQL语句,返回相应的结果的方法
//参数：$sql代表要执行的SQL语句,$type是SQL语句类型0代表查询1代表其他,$db代表要操作的数据库
public function Query($sql,$type=0,$db="mydb")
{
//1.造连接对象
$dbconnect = new MySQLi($this->host,$this->uid,$this->pwd,$db);
//2.判断连接是否出错
!mysqli_connect_error() or die("连接失败！");
//3.执行SQL语句
$result = $dbconnect->query($sql);
if($type==0)
{
return $result->fetch_all();
}
else
{
return $result;
}
}
}
<!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>无标题文档</title>
</head>
<body>
<h1>汽车查询页面</h1>
<br />
<?php
include("./DBDA.class.php");
$db = new DBDA();
$cx="";
$value="";
if(!empty($_POST["name"]))
{
$name = $_POST["name"];
$cx = " where Name like '%{$name}%'";//查询字符串
$value = $name;
}
?>
<form action="test.php" method="post">
<div>
请输入名称：<input type="text" name="name" value="<?php echo $value; ?>" />
<input type="submit" value="查询" />
</div>
</form>
<br />
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>代号</td>
<td>汽车名称</td>
<td>价格</td>
<td>油耗</td>
<td>功率</td>
</tr>
<?php
$sql = "select * from Car".$cx;
$attr = $db->Query($sql);
foreach($attr as $v)
{
//处理Name
$rp = "<span style='color:red'>{$value}</span>";
$str = str_replace($value,$rp,$v[1]);
echo "<tr>
<td>{$v[0]}</td>
<td>{$str}</td>
<td>{$v[7]}</td>
<td>{$v[4]}</td>
<td>{$v[5]}</td>
</tr>";
}
?>
</table>
</body>
</html>