mysqli数据查询
<!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>无标题文档</title>
</head>
<body>
<h1>查询数据</h1>
<form action="biaoge.php" method="post">
<div>请输入汽车名称:<input type="text" name="name" />
<input type="submit" value="查询" />
</div>
<br />
</form>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>代号</td>
<td>名称</td>
<td>系列</td>
<td>油耗</td>
<td>价格</td>
</tr>
<?php
$tj = " 1=1 ";//做了一个恒成立的条件
$name = "";
if(!empty($_POST)){
$name = $_POST["name"];
$tj = " name like '%{$name}%'";
}
$db=new MySQLi("localhost","root","123","ceshi");
$sql = "select * from car where {$tj}";
echo $sql;
$relsut=$db->query($sql);
if($relsut){
$arr = $relsut->fetch_all();
foreach($arr as $v){
$v[1];$name;
$carname = str_replace($name,"<mark>{$name}</mark>",$v[1]);
echo "<tr>
<td>{$v[0]}</td>
<td>{$carname}</td>
<td>{$v[2]}</td>
<td>{$v[4]}</td>
<td>{$v[7]}</td>
</tr>";
}
}
?>
</table>
</body>
</html>
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>无标题文档</title>
</head>
<body>
<h1>查询数据</h1>
<form action="duogechaxun.php" method="post">
<div>请输入汽车名称:<input type="text" name="name" />
请输入系列代号:<input type="text" name="brand" />
<input type="submit" value="查询" /></div>
<br />
</form>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>代号</td>
<td>名称</td>
<td>系列</td>
<td>油耗</td>
<td>价格</td>
</tr>
<?php
$tj = " 1=1 ";//做了一个恒成立的条件
$tj2 = " 1=1 ";
$name = "";
if(!empty($_POST["name"])){
$name = $_POST["name"];
$tj = " name like '%{$name}%' ";
}
if(!empty($_POST["brand"])){
$brand = $_POST["brand"];
$tj2 = " brand = '{$brand}' ";
}
$db=new MySQLi("localhost","root","123","ceshi");
$sql = "select * from car where {$tj} and {$tj2}";
echo $sql;
$relsut=$db->query($sql);
if($relsut){
$arr = $relsut->fetch_all();
foreach($arr as $v){
echo "<tr>
<td>{$v[0]}</td>
<td>{$v[1]}</td>
<td>{$v[2]}</td>
<td>{$v[4]}</td>
<td>{$v[7]}</td>
</tr>";
}
}
?>
</table>
</body>
</html>
