查询

<h1>查询页面</h1>

<?php $db = new MySQLi("localhost","root","123","mydb");

$tj = " 1=1 ";

$name = "";

if(!empty($_POST["name"])) {  $name = $_POST["name"];  $tj = " name like '%{$name}%' "; }

?>

<form action="test.php" method="post"> <div>请输入名称： <input type="text" name="name" /> <input type="submit" value="查询" /> </div> </form> <br>

<table width="100%" border="1" cellpadding="0" cellspacing="0">  <tr>         <td>代号</td>         <td>名称</td>         <td>系列</td>         <td>时间</td>         <td>油耗</td>         <td>功率</td>     </tr>     <?php

 $sql = "select * from car where {$tj}";  echo $sql;    $result = $db->query($sql);  $attr = $result->fetch_all();    foreach($attr as $v)  {   $str = str_replace($name,"<mark>{$name}</mark>",$v[1]);   echo "<tr>         <td>{$v[0]}</td>         <td>{$str}</td>         <td>{$v[2]}</td>         <td>{$v[3]}</td>         <td>{$v[4]}</td>         <td>{$v[5]}</td>     </tr>";  }    ?>

<h1>查询页面</h1>

<?php $db = new MySQLi("localhost","root","123","mydb");

$tj1 = " 1=1 "; $tj2 = " 1=1 "; $name = "";

if(!empty($_POST["name"])) {  $name = $_POST["name"];  $tj1 = " name like '%{$name}%' "; }

if(!empty($_POST["brand"])) {  $brand = $_POST["brand"];  $tj2 = " brand = '{$brand}' "; }

?>

<form action="main.php" method="post"> <div>请输入名称： <input type="text" name="name" value="<?php echo $name ?>" />

请输入系列代号： <input type="text" name="brand" />

<input type="submit" value="查询" /> </div> </form> <br>

<table width="100%" border="1" cellpadding="0" cellspacing="0">  <tr>         <td>代号</td>         <td>名称</td>         <td>系列</td>         <td>时间</td>         <td>油耗</td>         <td>功率</td>     </tr>     <?php

 $sql = "select * from car where {$tj1} and {$tj2}";  echo $sql;    $result = $db->query($sql);  $attr = $result->fetch_all();    if(count($attr)>0)  {   foreach($attr as $v)   {    $str = str_replace($name,"<mark>{$name}</mark>",$v[1]);    echo "<tr>    <td>{$v[0]}</td>    <td>{$str}</td>    <td>{$v[2]}</td>    <td>{$v[3]}</td>    <td>{$v[4]}</td>    <td>{$v[5]}</td>   </tr>";   }  }  else  {   echo "<script>alert('没有查到数据');</script>";  }        ?>