匹配csdn用户数据库与官方用户的重合度并将重叠(2)

$link = mysql_connect('localhost', 'root', 'admin', true);
mysql_select_db('csdn',$link);
$handle_username = fopen("E:/records_username.txt","a");
while($uid<2181106) {//此处的数字为要对比用户库的最大ID
$nextuid= $uid+10000;
$query = mysql_query("SELECT m.uid,m.username,m.password,m.email,u.password as csdn_password,u.email as csdn_email FROM own_members m LEFT JOIN csdn_userdb u USING(username) WHERE m.uid>'$uid' AND m.uid<='$nextuid' AND u.username!=''");
while ($rt = mysql_fetch_array($query,MYSQL_ASSOC)) {
if ($rt['password'] == md5($rt['csdn_password'])) {
$username_num++;
fwrite($handle_username,'OWN:'.$rt['uid'].'|'.$rt['username'].'|'.$rt['password'].'|'.$rt['email'].' CSDN:'.$rt['username'].'|'.$rt['csdn_password'].'|'.$rt['csdn_email']."\r\n");
echo 'username_num='.$username_num."\r\n";
}
}
$uid = $nextuid;
echo 'uid='.$uid;
}
?>

总对比时间25分钟，相比较之前10多个小时的执行真是大有提升
总重名用户：34175
占总会员比例：1.7%
1.7%的重名用户还是挺严重的，希望本文对各位站长对比出本站的用户有所帮助