PHP development query search user query
User query
## Link to the database
<?php
$keywords = isset($_GET['keywords']) ? trim($_GET['keywords']) : '';
$conn = @mysql_connect("localhost", "root", "root") or die("数据库链接错误");
mysql_select_db("sql", $conn);
mysql_query("set names 'utf8'"); //使用utf-8中文编码;
?> and then perform a fuzzy query on the database. <?php
$sql="SELECT * FROM user WHERE username LIKE '%{$keywords}%'";
$rs= mysql_query($sql);
$users = array();//保存所以得查询到的用户
?>Use fuzzy query statements to query all users, and save them in $users. 
<?php
if ($keywords){
echo '<h3>查询关键词：<font color="red">'.$keywords.'</font></h3>';
}
if ($users){
echo '<table width="500" cellpadding="5">';
echo '<tr><th>用户名</th><th>密码</th><th>邮箱</th><th>性别</th><th>爱好</th>';
foreach ($users as $key=>$value){
echo '<tr>';
echo '<td>'.$value['username'].'</td>';
echo '<td>'.$value['password'].'</td>';
echo '<td>'.$value['sex'].'</td>';
echo '<td>'.$value['email'].'</td>';
echo '<td>'.$value['hobby'].'</td>';
echo '</tr>';
}
}else{
echo '没有查询到相关用户';
}
?>Then we beautify the page<style>
.textbox {
width: 355px;
height: 40px;
border-radius: 3px;
border: 1px solid #e2b709;
padding-left: 10px;
}
.su {
width: 365px;
height: 40px;
background-color: #7fbdf0;
color: white;
border: 1px solid #666666;
}
table{ background-color: #7fbdf0; line-height:25px;}
th{ background-color:#fff;}
td{ background-color:#fff; text-align:center}
</style>This way our data is displayed
Key points of this chapter:
- Use sql to database Perform fuzzy query
- Mixed php and html statements Next Section
<?php
$keywords = isset($_GET['keywords']) ? trim($_GET['keywords']) : '';
$conn = @mysql_connect("localhost", "root", "root") or die("数据库链接错误");
mysql_select_db("sql", $conn);
mysql_query("set names 'utf8'"); //使用utf-8中文编码;
//PHP模糊查询
$sql="SELECT * FROM user WHERE username LIKE '%{$keywords}%'";
$rs= mysql_query($sql);
$users = array();//保存所以得查询到的用户
if(!empty($keywords)){
while ($row=mysql_fetch_assoc($rs)){
$users[] = $row;
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>查询器</title>
<style>
.textbox {
width: 355px;
height: 40px;
border-radius: 3px;
border: 1px solid #e2b709;
padding-left: 10px;
}
.su {
width: 365px;
height: 40px;
background-color: #7fbdf0;
color: white;
border: 1px solid #666666;
}
table{ background-color: #7fbdf0; line-height:25px;}
th{ background-color:#fff;}
td{ background-color:#fff; text-align:center}
</style>
</head>
<body >
<form action="" method="get">
<p><input type="text" name="keywords" class="textbox" value="" placeholder="请输入内容"/>
<p><input type="submit" class="su" value="查询"/>
</form>
<?php
if ($keywords){
echo '<h3>查询关键词：<font color="red">'.$keywords.'</font></h3>';
}
if ($users){
echo '<table width="500" cellpadding="5" >';
echo '<tr><th>用户名</th><th>密码</th><th>邮箱</th><th>性别</th><th>爱好</th>';
foreach ($users as $key=>$value){
echo '<tr>';
echo '<td>'.$value['username'].'</td>';
echo '<td>'.$value['password'].'</td>';
echo '<td>'.$value['sex'].'</td>';
echo '<td>'.$value['email'].'</td>';
echo '<td>'.$value['hobby'].'</td>';
echo '</tr>';
}
}else{
echo '没有查询到相关用户';
}
?>
</body>
</html>
