<?php
 
error_reporting(-1);
mb_internal_encoding('utf-8');
 
$emailAddres = "dsa-d32@yandex.ua, dsd213a_skjh.gfgf@mail.ru, dda-ds-nvc-x_cx@gmail.na, you+me@some.domain-domain.com, sad87ds-ds8.sa@gmail-smail.su";
$email = "!([a-z0-9\-\.\_\+]+)@([a-z\ \.\-]+)!iu";
$emails = array();
 
preg_match_all($email, $emailAddres, $emails);
 
foreach ($emails[0] as $key => $addres) {
	echo "Были введен следуйщие адреса: {$addres}\n";
}

?>