Question

在进行大循环时，我总是遇到PHP问题。我把它拆分成非常小的循环，当我们谈论的是大数字时，它会做几百次。

这是我现在正在使用的一个例子：

$stmt = $GLOBALS['link']->prepare('SELECT * FROM tracking_redirect');
$stmt->execute();
$tracking = new tracking();
while($click = $stmt->fetch()){
    $tracking->checkClickIP($click['blogid'], $click['campaignid'], $click['id'], $click['ipaddress']);
}

tracking_redirect是一个表格，其中包含有关将哪些用户重定向到哪个网站的大量信息。我保存了诸如ipaddress，cookie-data，用户的日期和id之类的数据。该表目前有大约60,000行。

checkClickIP（）是一个检查点击/重定向是合法还是有效的函数。确保同一用户没有点击太多次的示例。

public function checkClickIP($userid, $campaignid, $clickid, $ipaddress = null) {
        if(!isset($ipaddress)){
            $ipaddress = $_SERVER['REMOTE_ADDR'];
        }

        $datestmt = $GLOBALS['link']->prepare('SELECT crdate FROM tracking_redirect WHERE id=:clickid');
        $datestmt->execute(array('clickid' => $clickid));
        $datestmt = $datestmt->fetch();

        $stmt = $GLOBALS['link']->prepare('SELECT COUNT(*) as total FROM tracking_redirect WHERE ipaddress=:ipaddress AND campaignid=:campaignid AND blogid=:userid AND crdate<:clickdate');
        $stmt->execute(array(
            'ipaddress' => $ipaddress, 
            'campaignid' => $campaignid, 
            'userid' => $userid, 
            'clickdate' => $datestmt['crdate']
        ));
        $totalclicks = $stmt->fetch();

        //Same computer has clicked more than 5 times on the same campaign. ALERT WARNING!
        if($totalclicks['total'] >= 5){
            //Disable the click
            $disable = $GLOBALS['link']->prepare('UPDATE tracking_redirect SET disabled=:disabled WHERE id=:clickid');
            $disable->execute(array(
                'disabled' => 1, 
                'clickid' => $clickid
            ));

            //Send a warning to the user if this person clicked 5 times on the same campaign.
            if($totalclicks['total'] == 5){
                $stmt = $GLOBALS['link']->prepare('SELECT * FROM user_login_history WHERE userid=:userid AND usertype=:usertype AND ipaddress=:ipaddress AND date(visitdate) BETWEEN :startdate AND :currentdate LIMIT 1');
                $stmt->execute(array(
                    'userid' => $userid, 
                    'usertype' => 1, 
                    'ipaddress' => $ipaddress, 
                    'startdate' => date('Y-m-d', strtotime('-3 months')), //If user logged in 3 months ago or closer from this IP
                    'currentdate' => date('Y-m-d')
                ));
                //The computer belongs to the blogger who published the ad. ALERT WARNING! USER CLICKING HIS OWN ADS
                if($loginhistory = $stmt->fetch()){
                    //Send warning to user.
                }
                //The computer does not belong to the blogger, but it's suspicious behavior. ALERT WARNING! CHECK POST
                else{
                    //Send warning to user.
                }
            }
        }
    }

我知道在While循环之外准备语句会更好。但我仍然希望能够使用函数并拥有干净的代码。这段代码只是我无法在没有服务器返回错误的情况下运行while循环的一个例子，因为它超时等等。

因此，请不要在这种情况下过于依赖细节。但请提供可应用于其他代码的一般信息。我能做些什么来做这种循环~10,000或〜100,000次？

Answer 1

当我们处理大量数据时，这总是一个问题。我目前正在开发一种产品，有时在一个GO中更新20K记录。该软件的另一部分使用简单的LINQ查询，但无论是上传还是更新，甚至需要批量数据，我们总是使用存储过程。

在这方面，您可以查看此链接MySQL Stored Procedure vs. complex query

循环查询10 + 000+次的最佳方法？

1 个答案: