Question

这个PHP函数工作正常：

if (preg_match ("/<(\S+@\S+\w)>.*\n?.*55[0-9]/i",$body,$match)) {
echo "found!";
}

in

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

xxx@hotmail.com
SMTP error from remote mail server after RCPT TO:<xxx@hotmail.com>:
host mx3.hotmail.com [65.54.188.72]: 550 Requested action not taken:
mailbox unavailable

但是如果我在这种情况下使用相同的php函数：

A message that you sent could not be delivered to one or more of its 
recipients. This is a permanent error. The following address(es) failed:

xxx@yahoo.com
SMTP error from remote mail server after end of data:
host d.mx.mail.yahoo.com [209.191.88.254]: 554 delivery error:
dd This user doesn't have a yahoo.com account (xxxd@yahoo.com) [0] -  mta1010.mail.mud.yahoo.com

preg_match函数不会给出任何结果。我做错了什么？

Answer 1

您基本上是在寻找<和>附带的电子邮件地址。

您的第一个输入有，但第二个输入没有：它在< >中没有电子邮件ID，因此您没有匹配。

编辑:(发表评论后）：

查看您提供的2个示例，电子邮件ID出现在字符串failed:和以55开头的错误代码之间。你可以使用preg_match作为：

if(preg_match('/failed:.*?(\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b).*55[\d]/is',$str,$m)) {
       echo "Bounced email ".$m[1]."\n";
}

Ideone link

Answer 2

默认情况下，preg_match不支持解析多行字符串（包含\ n的字符串），因此你必须传入额外的参数来匹配整个字符串，即m（多行）。

试

if (preg_match ("/<(\S+@\S+\w)>.*\n?.*55[0-9]/im",$body,$match)) {
echo "found!";
}

PHP preg_match结果

2 个答案: