条件循环
<!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="Untitled-1.php" method="post">
<div>
汽车名称
<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
include("dbda.class.php");
$db=new dbda();
$tj="";
$name="";
if(!empty($_POST))
{
$name=$_POST[‘name‘];
$tj="where name like ‘%{$_POST[‘name‘]}%‘";
}
$sql="select * from car ".$tj;
$attr=$db->Query($sql);
foreach($attr as $v)
{
//处理关键字
$v[1];$name;
$re="<span style=‘color:red‘>{$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>{$v[4]}</td>
<td>{$v[5]}</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>
<form action="chaxun.php" method="post">
<div>
汽车名称
<input type="text" name="name" />
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
//一般来说做查询的时候：用户不输入任何内容就是查询所有的
include("dbda.class.php");
$db=new dbda();
//多条件查询
$tj1="1=1";
$tj2="1=1";
$name="";
if(!empty($_POST))
{
if($_POST[‘name‘]!="")
{
$name=$_POST[‘name‘];
$tj1=" name like ‘%{$_POST[‘name‘]}%‘";
}
if($_POST[‘brand‘]!="")
{
$tj2="brand=‘{$_POST[‘brand‘]}‘";
}
}
$cxtj=" where ".$tj1." and ".$tj2;
$sql="select * from car ".$cxtj;
echo $sql;
$attr=$db->Query($sql);
foreach($attr as $v)
{
$v[1];$name;
$re="<span style=‘color:red‘>{$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>{$v[4]}</td>
<td>{$v[5]}</td>
</tr>";
}
?>
</table>
</body>
</html>
时间： 2024-10-17 19:36:45