php根据参数从读取数据库记录
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($result)) { echo '<pre class="brush:php;toolbar:false">'; while($row = mysql_fetch_array($result,mysql_assoc)) { print_r($row); } } else { echo '你要查询的数据己经学存在了'; } mysql_close($conn);
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