当有新用户添加到数据库时,我收到一封电子邮件(通过PHPMailer)。如果电子邮件(密钥)已存在且ON DUPLICATE KEY UPDATE功能,则更新DB。但是,我不希望电子邮件在更新时发送,只有在新邮件发布时才会发送。如何检查(使用PHP)SQL结果是更新还是插入,然后使用IF语句发送/不发送电子邮件?
$sql = "INSERT INTO premium_waitinglist (date, email, ip) VALUES ('".$serverDate."', '".$_POST['user-email']."', '".$userIP."') ON DUPLICATE KEY UPDATE waiting = 1";
if ($conn->query($sql) == true) {} else { echo "<kbd>Error: ".$conn->error."</kbd>";}
$mail = new PHPMailer;
$fromEmail = $_POST['user-email'];
$body = file_get_contents($urlBody);
$mail->isSMTP();
$mail->Host = $mailHost;
$mail->SMTPAuth = true;
$mail->Username = $mailUsername;
$mail->Password = $mailPassword;
$mail->Port = 2525;
$mail->From = $fromEmail;
$mail->FromName = $fromName;
$mail->addAddress($toEmail, $toName);
$mail->Subject = $mailSubject;
$mail->isHTML(true);
$mail->Body = $body;
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
编辑1: 我可能会说这个错了,但是$ result返回1,这似乎是正确的,但是 - &gt; affected_rows是空的。
$sql = "INSERT INTO premium_waitinglist (date, email, ip) VALUES ('".$serverDate."', '".$_POST['user-email']."', '".$userIP."') ON DUPLICATE KEY UPDATE waiting = 1";
$result = $conn->query($sql);
if ($result == true) {} else { echo "<kbd>Error: ".$conn->error."</kbd>";}
echo $result;
echo $result->affected_rows;
if ($result->affected_rows == 1) {
答案 0 :(得分:1)
根据文档:https://dev.mysql.com/doc/refman/5.1/en/mysql-affected-rows.html
对于INSERT ... ON DUPLICATE KEY UPDATE语句,如果将行作为新行插入,则affected-rows值为1,如果更新现有行,则为2。
因此,请使用:mysql_affected_rows,或者您所选择的非弃用/非过时数据库中的等效项。