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.

QQ截图20161105114257.png

We continue to write and loop through the obtained data

<?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

QQ截图20161105114826.png

Key points of this chapter:

Use sql to database Perform fuzzy query
Mixed php and html statements

Next Section

new file

<?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>

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