PHP mysql实现搜索功能
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2022-03-01 17:40:56
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实例
<?php
//显示所有数据
//var_dump($_GET);
//搜索开始 如果存在我们就拼接一个where条件即可
$where = '';
if (!empty($_GET['name'])) {
//$where = " WHERE name LIKE '%".$_GET['name']."%' ";
$where[] = "name LIKE '%{$_GET['name']}%'";
}
if(!empty($_GET['age'])){
$where[]= "age = {$_GET['age']}";
}
if (!empty($_GET['city'])) {
$where[] = "city LIKE '%{$_GET['city']}%'";
}
//var_dump($where);
if(!empty($where)){
$where =' WHERE '.implode(' and ',$where);
}
//echo $where;
//echo $where;
$link = mysqli_connect('localhost','root','123456');
if (mysqli_connect_errno($link)>0) {
echo mysqli_connect_error($link);exit;
}
mysqli_select_db($link,'ss34');
mysqli_set_charset($link,'utf8');
$sql="SELECT id,name,sex,age,city FROM info {$where}";
$result = mysqli_query($link,$sql);
if ($result && mysqli_num_rows($result)>0) {
//声明一个新数组
$userlist = array();
while($row = mysqli_fetch_assoc($result)){
$userlist[]=$row;
}
}
//var_dump($userlist);
//定义一个变量用来声明编号
$i=1;
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<h3><a href="add.html">添加用户</a></h3>
<!-- 如果你要做搜索内容 method="get" -->
<form action="index.php" method="get">
姓名: <input type="text" name="name">
年龄: <input type="text" name="age">
<input type="submit" value="搜索">
</form>
<hr>
<table border="1" width="800" align="center">
<caption><h3>学员管理系统v1.0</h3></caption>
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
<th>性别</th>
<th>城市</th>
<th>操作</th>
</tr>
<?php if(!empty($userlist)){?>
<?php foreach($userlist as $value){?>
<tr>
<td><?php echo $i++?></td>
<td><?php echo $value['name']?></td>
<td><?php echo $value['age']?></td>
<td>
<?php
$sex = $value['sex'];
switch($sex){
case 0:
echo '女';
break;
case 1:
echo '男';
break;
case 2:
echo '保密';
break;
case 3:
echo '琦琦';
break;
default:
echo '人妖';
}
?>
</td>
<td><?php echo $value['city']?></td>
<td><a href="./del.php?id=<?php echo $value['id']?>" onclick="return confirm('数据无价 谨慎操作')">删除</a>|<a href="edit.php?id=<?php echo $value['id']?>">修改</a></td>
</tr>
<?php } ?>
<?php }else{?>
<tr><td colspan="6">暂无数据</td></tr>
<?php }?>
</table>
</body>
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