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>