Parse RFC 822 compliant addresses in a TO header - php

Question

I would like to parse an email address list (like the one in a TO header) with preg_match_all to get the user name (if exists) and the E-mail. Something similar to mailparse_rfc822_parse_addresses or Mail_RFC822::parseAddressList() from Pear, but in plain PHP.
Input :
"DOE, John \(ACME\)" <john.doe#somewhere.com>, "DOE, Jane" <jane.doe#somewhere.com>
Output :
array(
array(
'name' => 'DOE, John (ACME)',
'email' => 'john.doe#somewhere.com'
),
array(
'name' => 'DOE, Jane',
'email' => 'jane.doe#somewhere.com'
)
)
Don't need to support strange E-mail format (/[a-z0-9._%-]+#[a-z0-9.-]+.[a-z]{2,4}/i for email part is OK).
I can't use explode because the comma can appear in the name. str_getcsv doesn't work, because I can have:
DOE, John \(ACME\) <john.doe#somewhere.com>
as input.
Update:
For the moment, I've got this :
public static function parseAddressList($addressList)
{
$pattern = '/^(?:"?([^<"]+)"?\s)?<?([^>]+#[^>]+)>?$/';
if (preg_match($pattern, $addressList, $matches)) {
return array(
array(
'name' => stripcslashes($matches[1]),
'email' => $matches[2]
)
);
} else {
$parts = str_getcsv($addressList);
$result = array();
foreach($parts as $part) {
if (preg_match($pattern, $part, $matches)) {
$result[] = array(
'name' => stripcslashes($matches[1]),
'email' => $matches[2]
);
}
}
return $result;
}
}
but it fails on:
"DOE, \"John\"" <john.doe#somewhere.com>
I need to test on back reference the \" but I don't remember how to do this.

Answer 1

Finally I did it:
public static function parseAddressList($addressList)
{
$pattern = '/^(?:"?((?:[^"\\\\]|\\\\.)+)"?\s)?<?([a-z0-9._%-]+#[a-z0-9.-]+\\.[a-z]{2,4})>?$/i';
if (($addressList[0] != '<') and preg_match($pattern, $addressList, $matches)) {
return array(
array(
'name' => stripcslashes($matches[1]),
'email' => $matches[2]
)
);
} else {
$parts = str_getcsv($addressList);
$result = array();
foreach($parts as $part) {
if (preg_match($pattern, $part, $matches)) {
$item = array();
if ($matches[1] != '') $item['name'] = stripcslashes($matches[1]);
$item['email'] = $matches[2];
$result[] = $item;
}
}
return $result;
}
}
But I'm not sure it works for all cases.

Answer 2

I don't know that RFC, but if the format is always as you showed then you can try something like:
preg_match_all("/\"([^\"]*)\"\\s+<([^<>]*)>/", $string, $matches);
print_r($matches);