访问量一大功能就不能正确实现了，求高手帮忙优化两段PHP代码解决方法

访问量一大功能就不能正确实现了，求高手帮忙优化两段PHP代码
第一段：

PHP code

<!--

Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/

-->
<?php
@session_start();
date_default_timezone_set('Asia/Shanghai');
$link_id =@ mysql_connect('localhost', 'root', 'password');
if ($link_id)
 {
     mysql_select_db('database');
     mysql_query("set names 'utf8'"); //select 数据库之后加多这一句
} 
else
{
    echo "数据库连接错误!";
}
//var_dump($current);
$Datetime=date("Y-m-d G:i:s");//获取注册时间，也就是数据写入到用户表的时间
$bijiao="select max(current) from online";
$max=@mysql_query($bijiao,$link_id);
$most= intval( @mysql_result($max,0) );
$current= intval($_SESSION['current']);
$query="insert into online(current,mostcount,time)  values('".$current."','".$most."','$Datetime')";
$result=mysql_query($query);
echo $most;
?>

登录后复制

PHP code

<!--

Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/

-->
<?php
@session_start();
date_default_timezone_set('Asia/Shanghai');
$link_id =@ mysql_connect('localhost', 'root', 'password');
if ($link_id)
 {
     mysql_select_db('database');
     mysql_query("set names 'utf8'"); //select 数据库之后加多这一句
} 
else
{
    echo "数据库连接错误!";
}
$bijiao="select max(mostcount) from online";
$max=@mysql_query($bijiao,$link_id);
$most= intval( @mysql_result($max,0) );
$time="select time from online where mostcount='$most'";
$time=@mysql_query($time,$link_id);
$time=@mysql_result($time,0);
$already="select max(mostcount) from record";
$already=@mysql_query($already,$link_id);
$already= intval( @mysql_result($already,0) );
if($most>$already)
{
    $query="insert into record(mostcount,time)  values('".$most."','$time')";
    $result=@mysql_query($query);
}
?>

登录后复制