php 如何捕获由 mail() 引起的错误？
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How can I catch an error caused by mail()?
提问by Jin Yong
Does anyone know how can I catch a mail error (error is displayed while sending email and the error is caused by the mailserver down) in php?
有谁知道如何在 php 中捕获邮件错误（发送电子邮件时显示错误，并且该错误是由邮件服务器关闭引起的）？
Error that was caused by emailserver down is below:
由 emailserver down 引起的错误如下：
<!--2010-02-24T14:26:43+11:00 NOTICE (5): Unexpected Error: mail() [<a href='function.mail'>function.mail</a>]: Failed to connect to mailserver at "ip " port portip, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() (# 2).
2010-02-24 14:26:43
Username: admin
Error in line 439 of file D:\test.php
Script: /customer.php
[Global Error Handler]
-->
<!--2010-02-24T14:26:43+11:00 通知 (5)：意外错误：mail() [<a href='function.mail'>function.mail</a>]：未能连接到邮件服务器的“ip”端口 portip，验证 php.ini 中的“SMTP”和“smtp_port”设置或使用 ini_set() (#2)。
2010-02-24 14:26:43
用户名：admin
文件 D:\test.php 的第 439 行错误
脚本：/customer.php
[全局错误处理程序]
-->
回答by deceze
This is about the best you can do:
这是你能做的最好的事情：
if (!mail(...)) {
// Reschedule for later try or panic appropriately!
}
http://php.net/manual/en/function.mail.php
http://php.net/manual/en/function.mail.php
mail()returnsTRUEif the mail was successfully accepted for delivery,FALSEotherwise.It is important to note that just because the mail was accepted for delivery, it does NOT mean the mail will actually reach the intended destination.
mail()TRUE如果邮件被成功接受交付，FALSE则返回，否则返回。重要的是要注意，仅仅因为邮件被接受交付，并不意味着邮件实际上会到达预定的目的地。
If you need to suppress warnings, you can use:
如果需要抑制警告，可以使用：
if (!@mail(...))
Be careful though about using the @operator without appropriate checks as to whether something succeed or not.
但是在@没有适当检查某事是否成功的情况下使用运算符时要小心。
If mail()errors are not suppressible (weird, but can't test it right now), you could:
如果mail()错误不可抑制（很奇怪，但现在无法测试），您可以：
a) turn off errors temporarily:
a) 暂时关闭错误：
$errLevel = error_reporting(E_ALL ^ E_NOTICE); // suppress NOTICEs
mail(...);
error_reporting($errLevel); // restore old error levels
b) use a different mailer, as suggested by fireand Mike.
If mail()turns out to be too flaky and inflexible, I'd look into b). Turning off errors is making debugging harder and is generally ungood.
如果mail()结果证明太片状和不灵活，我会考虑 b)。关闭错误会使调试变得更加困难，而且通常是不好的。
回答by fire
PHPMailerhandles errors nicely, also a good script to use for sending mail via SMTP...
PHPMailer 可以很好地处理错误，也是用于通过 SMTP 发送邮件的好脚本...
if(!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
} else {
echo "Message sent!";
}
回答by staabm
also using http://php.net/error_get_lastwill not help you out, because mail() does not emmit its errors into this function.
同样使用http://php.net/error_get_last也不会帮助你，因为 mail() 不会将它的错误发送到这个函数中。
Only way seems to be using a proper mailer, like already suggested above.
唯一的方法似乎是使用适当的邮件程序，就像上面已经建议的那样。
回答by Dairy Window
According to http://php.net/manual/en/function.error-get-last.php, use:
根据http://php.net/manual/en/function.error-get-last.php，使用：
print_r(error_get_last());
Which will return an array of the last error generated. You can access the [message]element to display the error.
这将返回生成的最后一个错误的数组。您可以访问该[message]元素以显示错误。
