php连接数据库测试

<?php
$conn = mysql_connect('ip地址','用户名','密码);

if($conn) {
    mysql_select_db("codo_cmdb",$conn);
    $sql="select * from asset_server";
    $result=mysql_query($sql);
   while($row = mysql_fetch_array($result)){

    echo $row['private_ip'];

    echo "<br>";
    };
    echo 'mysql connect success';
}else {
    die("无法连接数据库".mysql_error());
}
    mysql_close($con);

?>