how to extract full mail address in imap php - php

Question

i use the below code to extract header details from the mail.. i could not get the mail address in from, to and cc as mentioned below..
$header = explode("\n", imap_fetchheader($mbox,$msgno));
echo "<br>";
for ($i=1; $i<count($header); $i++)
{
echo $header[$i] . "<br>";
}
output:
Delivered-To: user1#examplecom
X-WM-Delivered: user1#example.com
Received: from ElcotPC ([127.0.0.1])
(envelope-sender )
by 127.0.0.1 with ESMTP
for ; Wed, 31 Jul 2013 09:14:19 +0530
From: "user1"
To:
Cc:
Subject: testing with attachment
Date: Wed, 31 Jul 2013 09:14:18 +0530
The "from","to", "cc" field are empty without the mail address..
i want the output like this..
Delivered-To: user1#examplecom
X-WM-Delivered: user1#example.com
Received: from ElcotPC ([127.0.0.1])
(envelope-sender )
by 127.0.0.1 with ESMTP
for ; Wed, 31 Jul 2013 09:14:19 +0530
From: "user1" <user1#example.com>
To: <user2#example.com>
Cc: <user1#example.com>
how to get the email address to "from", "to" and "cc" field?

Answer 1

Update:
It's always best to use code that is readily available, so I checked if a imap-parsing function exists already. It does: imap_rfc822_parse_headers. Read the docs for details, and links to all sorts of imap_* functions. Perhaps imap_rfc822_parse_adrlist is exactly what you need?
A basic preg_match_all call could do the job, I think:
if (preg_match_all('/^\s*(From|To|Cc):[^<]*<([^>]+)\>/m',$string, $addresses)
{
$addresses = array_merge($addresses[1], $addresses[2]);
print_r($addresses);
}
Should output:
array (
'From' => 'user1#example.com',
'To' => 'user2#example.com',
'Cc' => 'user1#example.com',
)
I think that's what you were looking for.
The regex explained:
^\s* matches the start of the line, and zero or more whitespace chars
(From|To|Cc) matches (and groups) From, To or Cc
:[^<]*<: Matches (but doesn't group) the colon, and any char, except for the address delimiting <
([^>]+): Mathces (and groups) everything after the <, that isn't >
\>: Can be left out, but matches address-delimiting >
m: multi-line. If left out the leading ^ means start of string, now it means start of line
Notes: This expression doesn't deal with comma separated addresses or multiple addresses, and it might be usefull to call:
filter_var($addresses['From'], FILTER_VALIDATE_EMAIL)
or use array_map to filter $addresses[2] prior to merging...