Home >php教程 >php手册 >php根据参数从读取数据库记录

php根据参数从读取数据库记录

WBOY
WBOYOriginal
2016-05-24 18:31:02967browse

这是一款php 读取数据库记录,只是我们更深层的作了处理,就是把用户url地址栏传过来的参数再从数据库中查询了,如用户登陆,注册,增加记录,新闻显示都会用到,代码如下:

$host = 'localhost'; 
$user_name = 'root'; 
$password = 'admin'; 
$id = $_get['id']; 
$conn = mysql_connect($host,$user_name,$password); 
if(!$conn) 
{ 
    die('数据库连接失败:'.mysql_error()); 
} 
mysql_select_db('test'); 
$sql = 'select id,name,city from users where id='.$id; 
$result = mysql_query($sql) or die("<br/>error: <b>".mysql_error()."</b><br/>产生问题的sql:".$sql); 
if($num = mysql_num_rows($result)) 
{ 
    echo &#39;<pre class="brush:php;toolbar:false">&#39;; 
    while($row = mysql_fetch_array($result,mysql_assoc)) 
    {
        print_r($row); 
    } 
} 
else 
{ 
 echo &#39;你要查询的数据己经学存在了&#39;; 
} 
mysql_close($conn);

查询id=2的记录

                           


教程链接:

随意转载~但请保留教程地址★

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn