正则表达式和换行符

I have such text:

<Neednt@email.com> If you do so, please include this problem report. 
<Anotherneednt@email.com> You can delete your

own text from the attached returned message.

                   The mail system

<Some@Mail.net>: connect to *.net[82.*.86.*]: Connection timed
out

I have to parse email from it. Could you help me with this job?

upd

There could be another email addresses in <%here%>. There should be connection between 'The mail system' text. I need in email which goes after that text.

Considering this text is stored in $text, what about this :

$matches = array();
if (preg_match('/<([^>]+)>/', $text, $matches)) {
  var_dump($matches[1]);
}

Which gives me :

string 'Some@Mail.net' (length=13)

Basically, I used a pretty simple regex, that matches :

• a < character
• anything that's not a > character : [^>]
  • at least one time : [^>]+
  • capturing it : ([^>]+)
• a > character

So, it captures anything that's between < and >.

Edit after comments+edit of the OP :

If you only want the e-mail address that's after The mail system, you could use this :

$matches = array();
if (preg_match('/The mail system\s*<([^>]+)>/', $text, $matches)) {
  var_dump($matches[1]);
}

In addition to what I posted before, this expects :

• The string The mail system
• Any number of white-characters : \s*

You want to use preg_match() and looking at this input it should be simple:

<?php

if (preg_match('/<([^>]*?@[^>]*>/', $data, $matches)) {
  var_dump($matches); // specifically look at $matches[1]
}

There are other patterns that would match it, you don't have to stick to that same pattern. The '<' and '>' in your input are helpful here.