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  • 租房子多条件查询练习

    <!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>
    <form action="zf_duotiaojian.php" method="post">
    <div>区域:<input type="checkbox" name="quanxuan" onclick="checkall(this,'quyu')">全选</div>
    
    <?php
        include("./lei/AAA.class.php");
        $db=new AAA();
        $sql="select distinct area from house ";
        $attr=$db->Query($sql);
        echo "<table>";
        echo "<tr>";
        foreach($attr as $v){
            
            echo "<td><input type='checkbox' name='quyu[]' class='quyu' value='$v[0]'>{$v[0]}<td>";
            
            }
            echo "</tr>";
            echo "</table>";
    ?>
    <br />
    <div>租赁类型:<input type="checkbox" name="zllx" onclick="checkall(this,'zllx')">全选</div>
    <?php
        
        $sql="select distinct renttype from house ";
        $attr=$db->Query($sql);
        echo "<table>";
        echo "<tr>";
        foreach($attr as $v){
            
            echo "<td><input type='checkbox' name='zllx[]' class='zllx' value='$v[0]'>{$v[0]}<td>";
            
            }
            echo "</tr>";
            echo "</table>";
    ?>
    <br />
    <div>房屋类型:<input type="checkbox" name="fwlx" onclick="checkall(this,'fwlx')">全选</div>
    <?php
        
        $sql="select distinct housetype from house ";
        $attr=$db->Query($sql);
        echo "<table>";
        echo "<tr>";
        foreach($attr as $v){
            
            echo "<td><input type='checkbox' name='fwlx[]' class='fwlx' value='$v[0]'>{$v[0]}<td>";
            
            }
            echo "</tr>";
            echo "</table>";
    ?>
    <br />
    <div>关键字:<input type="text" name="guanjianzi"></div><br />
    <input type="submit" value="搜索">
    </form>
    <br />
    <table width="100%" border="1" cellspacing="0" cellpadding="0">
        <tr>
            <td>关键字</td>
            <td>区域</td>
            <td>建筑面积</td>
            <td>租金</td>
            <td>租赁类型</td>
            <td>房屋类型</td>
        </tr>
    
    <?php  
        //多条件查询
        $tj1 = "1=1";
        $tj2 = "1=1";
        $tj3 = "1=1";
        $tj4 = "1=1";
        //判断区域
        if(!empty($_POST['quyu']) && count($_POST['quyu'])>0)
        {
            $str=implode("','",$_POST["quyu"]);
            $tj1=" area in('{$str}') ";
            }
        //判断租赁类型
        if(!empty($_POST["zllx"]) && count($_POST["zllx"])>0)
        {
            $str=implode("','",$_POST["zllx"]);
            $tj2=" renttype in('{$str}') ";
            }
        //判断房屋类型
        if(!empty($_POST["fwlx"]) && count($_POST["fwlx"])>0)
        {
            $str=implode("','",$_POST["fwlx"]);
            $tj3=" housetype in('{$str}') ";
            }
        //判断关键字
        if(!empty($_POST["guanjianzi"]))
        {
            $tj4=" keyword like '%{$_POST['guanjianzi']}%'";
            }
            $sall="select * from house where {$tj1} and {$tj2} and {$tj3} and {$tj4} ";
            $aall=$db->Query($sall);
            foreach($aall as $v)
            {
                echo "
                    <tr>
                        <td>{$v[1]}</td>
                        <td>{$v[2]}</td>
                        <td>{$v[3]}</td>
                        <td>{$v[4]}</td>
                        <td>{$v[5]}</td>
                        <td>{$v[6]}</td>
                    </tr>
                ";
                }
    ?>
    </table>
    <script type="text/javascript">
        function checkall(d,a){
                var ck=document.getElementsByClassName(a);
                for(var i=0;i<ck.length;i++)
                {
                    if(d.checked){
                            ck[i].setAttribute("checked","checked");
                        }
                        else{
                            ck[i].removeAttribute("checked");
                            }
                    }
            }
    
    
    </script>
    </body>
    </html>

    引用封装好的类

    <?php
    class AAA
    {
        public $host="localhost";
        public $uid="root";
        public $pwd="123";
        public $dbname="housedb";
        
        /**
        *给一个sql语句,返回执行的结果
        *@param string $sql 用户指定的sql语句
        *@param int $type 用户给的语句类型,0代表增删改,1代表查询
        *@return  返回查询的结果,如果是查询返回二维数组,如果是增删改返回true或false 
        */
        function Query($sql,$type=1)
        {
            //造连接对象
            $db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);
            
            //执行sql语句
            $reslut = $db->query($sql);
            
            //从结果集对象里面取数据
            if($type==1)
            {
                return $reslut->fetch_all();
            }
            else
            {
                return $reslut;
            }
        }
        
        /**
        *给一个sql语句,返回关联的二维数组
        *@param string $sql 用户指定的sql语句
        *@param int $type 用户给的语句类型,0代表增删改,1代表查询
        *@return  返回查询的结果,如果是查询返回二维数组,如果是增删改返回true或false 
        */
        function GuanQuery($sql,$type=1)
        {
            //造连接对象
            $db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);
            
            //执行sql语句
            $reslut = $db->query($sql);
            
            //取数据
            if($type==1)
            {
                $attr = array();
                while($a = $reslut->fetch_assoc())
                {
                    $attr[] = $a;
                }
                
                return $attr;    
            }
            else
            {
                return $reslut;
            }
        }
        /**
        *给一个sql语句,返回字符串
        *@param string $sql 用户指定的sql语句
        *@param int $type 用户给的语句类型,0代表增删改,1代表查询
        *@return  返回查询的结果,如果是查询返回字符串,如果是增删改返回true或false 
        */
        function StrQuery($sql,$type=1)
        {
            //造连接对象
            $db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);
            
            //执行sql语句
            $reslut = $db->query($sql);
            
            //取数据
            if($type==1)
            {
                $attr = $reslut->fetch_all();
                $str="";
                foreach($attr as $v)
                {
                    $str .= implode("^",$v);
                    $str .="|";
                }
                return substr($str,0,strlen($str)-1);
            }
            else
            {
                return $reslut;
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/zxl89/p/6040596.html
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