如何解决通过phpmailer发送电子邮件时，IF语句上的PHP异常行为具有IF和ELSE的输出
我要呈现的脚本很难理解，但是下面我将解释基本概念。
<?php
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
require_once 'apps/PHPMailer/src/Exception.php';
require_once 'apps/PHPMailer/src/PHPMailer.php';
require_once 'apps/PHPMailer/src/SMTP.php';
include_once('apps/HTMLDOMParser/simple_html_dom.php');
require_once("../db.php");
function clear($var) {
$var = NULL;
unset($var);
}
// Time when emails were sent last time
$result_laststamp = $conn->prepare("SELECT sent FROM nl_campaigns_emails ORDER BY sent DESC LIMIT 1",array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
$result_laststamp->execute();
if($result_laststamp->rowCount() > 0) {
while($row_laststamp = $result_laststamp->fetch(PDO::FETCH_ASSOC)) {
// data for first qeued campaign
$result_campaign = $conn->prepare("SELECT id,name,text,amount,period,smtp,user FROM nl_campaigns WHERE status='1' ORDER BY id ASC LIMIT 1",array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
$result_campaign->execute();
if($result_campaign->rowCount() > 0) {
while($row_campaign = $result_campaign->fetch(PDO::FETCH_ASSOC)) {
// SMTP Data
if($row_campaign['smtp']==1 && $row_campaign['user']>0) {
$result_smtp = $conn->prepare("SELECT * FROM admin_logins WHERE id=:id LIMIT 1",array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
$result_smtp->execute(array(":id"=>$row_campaign['user']));
if($result_smtp->rowCount() > 0) {
while($row_smtp = $result_smtp->fetch(PDO::FETCH_ASSOC)) {
// Check if its time to send next group of emails
if($row_laststamp['sent'] < (time()-($row_campaign['period']*3600))) {
// get email addresses,send,and edit timestmap in db when they were sent
$result_emails = $conn->prepare("SELECT id,email FROM nl_campaigns_emails WHERE (id_campaign=:id_campaign AND sent='0') ORDER BY id ASC LIMIT ".$row_campaign['amount'],array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
$result_emails->execute(array(":id_campaign"=>$row_campaign['id']));
if($result_emails->rowCount() > 0) {
$array_email_ids = array();
while($row_emails = $result_emails->fetch(PDO::FETCH_ASSOC)) {
try {
$mail = new PHPMailer(true);
$mail->CharSet = 'UTF-8'; // UTF8 Encoding
$mail->Encoding = 'base64'; // Needs to be set with UTF8
//$mail->SMTPDebug = SMTP::DEBUG_SERVER; // Enable verbose debug output
$mail->isSMTP(); // Send using SMTP
$mail->Host = "smtp.somedomain.com"; // Set the SMTP server to send through
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = "noreply@somedomain.cz"; // SMTP username
$mail->Password = "somepassword"; // SMTP password
$mail->SMTPSecure = "tls";
$mail->Port = 587; // TCP port to connect to,use 465 for `PHPMailer::ENCRYPTION_SMTPS` above
//Sender
$mail->setFrom($row_smtp['email'],'somename');
$mail->addReplyTo('info@somedomain.cz','somename');
$mail->Sender = 'noreply@somedomain.cz';
// Recipient
$mail->addAddress($row_emails['email']);
// Attachments
//$mail->addAttachment('/var/tmp/file.tar.gz'); // Add attachments
//$mail->addAttachment('/tmp/image.jpg','new.jpg'); // Optional name
$bottom_text = "<p align=center style=\"font-size:11px; font-family:Arial; color:#8b8b8b;\">This email was sent to address <a href=\"mailto:".$row_emails['email']."\">".$row_emails['email']."</a>.<br>";
$bottom_text .= "To unsubscribe you can click to <a href=\"http://www.somedomain.cz/unsubscribe.php?email=".$row_emails['id']."\">unsubscribe</a>.</p>";
$bottom_text .= "<img src=\"http://www.somedomain.cz/view.php?id_campaign=".$row_campaign['id']."&id_email=".$row_emails['id']."\" style=\"visibility: hidden;\">";
// YOUTUBE LINK
$text = new simple_html_dom();
$text->load($row_campaign['text']);
foreach($text->find('iframe') as $element) {
$youtubeid = substr($element->src,strrpos($element->src,"/")+1);
// Create image instances
$video = imagecreatefromjpeg('https://img.youtube.com/vi/'.$youtubeid.'/maxresdefault.jpg');
$button = imagecreatefrompng('../images/youtube_play.png');
$video = imagescale($video,$element->width,$element->height);
$button = imagescale($button,imagesx($video)/7.5);
imagecopy($video,$button,imagesx($video)/2-imagesx($button)/2,imagesy($video)/2-imagesy($button)/2,imagesx($button),imagesy($button));
// Output and free from memory
imagejpeg($video,"../images/campaigns/videos/".$youtubeid.".jpg",95);
imagedestroy($video);
imagedestroy($button);
unset($video);
unset($button);
$element->outertext = '<a href="https://www.youtube.com/watch?v='.$youtubeid.'" target="_blank"><img src="http://www.somedomain.cz/images/campaigns/videos/'.$youtubeid.'.jpg" width="'.$element->width.'" height="'.$element->height.'"></a>';
}
$row_campaign['text'] = (string)$text;
$text->clear();
clear($text);
// URL LINK FOR CLICKER ANALYZER
$doc = new simple_html_dom();
$doc->load($row_campaign['text']);
foreach ($doc->find('a') as $a) {
$a->href = 'http://www.somedomain.cz/clicker.php?id_campaign='.$row_campaign["id"].'&id_email='.$row_emails["id"].'&url='.urlencode($a->href);
}
$row_campaign['text'] = (string)$doc;
$doc->clear();
clear($doc);
// Content
$mail->isHTML(true); // Set email format to HTML
$mail->Subject = $row_campaign['name'];
$mail->Body = $row_campaign['text'].$bottom_text;
$mail->AltBody = strip_tags($row_campaign['text']);
// MessageID
$data = array(
'campaign_id' => str_pad($row_campaign['id'],6,'0',STR_PAD_LEFT),'email_id' => str_pad($row_emails['id'],11,'sent' => time(),);
$messageId = '<'.base64_encode(json_encode($data)).'@www.somedomain.cz>';
$mail->MessageID = $messageId;
$mail->addCustomHeader('In-Reply-To',$messageId);
clear($data);
// SEND Email
$mail->send();
}
catch (Exception $e) {
echo "Emails were not send because: {$mail->ErrorInfo}";
die();
}
// ADD sent email to array
array_push($array_email_ids,$row_emails['id']);
// UPDATE the "sent" stamp
$update = $conn->prepare("UPDATE nl_campaigns_emails SET sent=:sent WHERE id=:id");
try { $update->execute(array(":id"=>$row_emails['id'],":sent"=>time())); }
catch(Exception $error) { die($error->getMessage()); }
clear($update);
clear($mail);
}
clear($result_emails);
// CHECK IF STATUS COULD BE CLOSED
$result_emails_sent = $conn->prepare("SELECT id FROM nl_campaigns_emails WHERE (id_campaign=:id_campaign AND sent='0') ORDER BY id",array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
$result_emails_sent->execute(array(":id_campaign"=>$row_campaign['id']));
if($result_emails_sent->rowCount() == 0) {
$update = $conn->prepare("UPDATE nl_campaigns SET status=:status WHERE id=:id");
try { $update->execute(array(":status"=>3,":id"=>$row_campaign['id'])); }
catch(Exception $error) { die($error->getMessage()); }
clear($update);
}
clear($result_emails_sent);
// Print the result
echo "<div style=\"color:#1b8d3d; text-align:center; font-size:25px; font-family:Arial;\">Sent total: ".count($array_email_ids)." emails.</div>";
echo "<center><a href=emailing.php style=\"color:black; text-align:center; font-size:25px; font-family:Arial; text-decoration:none;\">REFRESH</a></center>";
}
}
else {
echo "<div style=\"color:#1b8d3d; text-align:center; font-size:25px; font-family:Arial;\">Next emails can be send at: ".date("j.n.Y H:i:s",$row_laststamp['sent']+($row_campaign['period']*3600))."</div>";
echo "<center><a href=emailing.php style=\"color:black; text-align:center; font-size:25px; font-family:Arial; text-decoration:none;\">REFRESH</a></center>";
die();
}
}
}
else { die("error resolving SMTP"); }
clear($result_smtp);
}
}
clear($result_campaign);
}
else {
echo "<div style=\"color:#1b8d3d; text-align:center; font-size:25px; font-family:Arial;\">No campaign is running</div>";
echo "<center><a href=emailing.php style=\"color:black; text-align:center; font-size:25px; font-family:Arial; text-decoration:none;\">REFRESH</a></center>";
die();
}
}
}
clear($result_laststamp);
clear($conn);
?>
该脚本看起来非常庞大，但最终它的逻辑很简单：
- 获取上次发送电子邮件的时间（例如$ lastTimeSent）
- 获取打开的排队活动的数据（例如$ dataCampaign）
- 获取用于发送电子邮件的SMTP数据（例如$ SMTP）
- 检查当前时间戳记time（）是否大于$ lastTimeSent + allowed_period（因为我允许每20分钟发送200封电子邮件）
- 循环phpmailer，分别发送电子邮件（每次添加一封电子邮件发送）
问题是，如果我在不允许的时间段内运行脚本（因此我没有遵循20分钟内发送200封电子邮件的规则），则一切正常，脚本会将其评估为false：
if($row_laststamp['sent'] < (time()-($row_campaign['period']*3600)))
$row_laststamp['sent'] is the timestmap of last email sent ($lastTimeSent)
$row_campaign['period'] is allowed period to send the email (value is actually 0.33 as in hours its 20 minutes),and im multiplying it by 3600 to recalculate to seconds so I can compare
- 因此，从根本上讲，它仅会跳出并执行ELSE语句中的操作，因为它具有逻辑性和良好的行为
但是，当im超出周期，因此同一条语句的评估结果为TRUE时，就会发生非常奇怪的行为。 该脚本将按其应有的状态循环并发送电子邮件，但是实际上不是发送200封电子邮件（其值为$ row_campaign ['amount']的值），而是实际发送64封（有时65封电子邮件），然后它不会 回显已发送总计：“。count（$ array_email_ids）。” 电子邮件应符合逻辑，但还会再次显示ELSE输出* 下一封电子邮件可以发送至：“。date（“ jnY H：i：s“，$ row_laststamp ['sent'] +（$ row_campaign ['period'] 3600））。 。
所以我正在处理它立即显示IF和ELSE输出的问题... 换句话说，当语句* if（$ row_laststamp ['sent'] 3600））） 为TRUE时，它将部分运行try {}的循环（200次中只有65次），然后仍然显示ELSE {} ...
但是！！！如果我删除/注释$ mail-> send（）行；然后所有的作品按预期！ （当然，除非发送电子邮件）。
我正在检查内存状态，如果我没有走出内存，发现最终循环的最大内存约为24MB（当limnit设置为256MB时），设置120s时执行时间也约为10秒。
因此，基本上，每次只发送一次时，PHPMailer不会循环发送200封以上的电子邮件吗？
我不介意将它们全部发送在一起而不是循环发送，但是我不希望在电子邮件的“ TO”标头中看到它们，如果我改为使用密件抄送，那么（至少在gmail中）它将跳转为垃圾邮件
有什么想法吗？
编辑： 我简化了脚本，根据https://github.com/PHPMailer/PHPMailer/wiki/Sending-to-lists进行了调整 我也确实放置了调试器 $ mail-> SMTPDebug = SMTP :: DEBUG_SERVER; 以查看发生了什么，并且有趣的是，从客户端到服务器的消息突然停止在中间...服务器无响应，因此传输仅在中间停止... 最后一行甚至还没有结束，只是： 2020-09-02 17:06:40客户端->服务器：NTI1MjUyNTNGaWRfY2FtcGFpZ24lMjUyNTI1MjUyNTI1MjUyNTI1MjUyNTI1MjUyNTI1MjU 因此通信只是无缘无故地停止，没有服务器回复它是否已发送，什么都没有... 有人有主意吗？
解决方法
所以最后的错误确实是我没有在每个send（）之后清除收件人， 因此，第一封电子邮件已发送给1个收件人，并且每个循环都添加了1个，但之前的循环未清除... 每次循环解决问题后清除收件人
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