note 112492 added to function.filter-var

I found some addresses that FILTER_VALIDATE_EMAIL rejects, but RFC5321 permits: <?php foreach (array( 'localpart.ending.with.dot.@example.com', '(comment)localpart@example.com', '"this is v@lid!"@example.com', '"much.more unusual"@example.com', 'postbox@com', 'admin@mailserver1', '"()<>[]:,;@\\"\\\\!#$%&\'*+-/=?^_`{}| ~.a"@example.org', '" "@example.org', ) as $address) { echo "<p>$address is <b>".(filter_var($address, FILTER_VALIDATE_EMAIL) ? '' : 'not')." valid</b></p>"; } ?> Results: localpart.ending.with.dot.@example.com is not valid (comment)localpart@example.com is not valid "this is v@lid!"@example.com is not valid "much.more unusual"@example.com is not valid postbox@com is not valid admin@mailserver1 is not valid "()<>[]:,;@\"\\!#$%&'*+-/=?^_`{}| ~.a"@example.org is not valid " "@example.org is not valid The documentation does not saying that FILTER_VALIDATE_EMAIL should pass the RFC5321, however you can meet with these examples (especially with the first one). So this is a note, not a bug report. ---- Server IP: 69.147.83.199 Probable Submitter: 94.21.228.238 ---- Manual Page -- http://php.net/manual/en/function.filter-var.php Edit -- https://master.php.net/note/edit/112492 Del: integrated -- https://master.php.net/note/delete/112492/integrated Del: useless -- https://master.php.net/note/delete/112492/useless Del: bad code -- https://master.php.net/note/delete/112492/bad+code Del: spam -- https://master.php.net/note/delete/112492/spam Del: non-english -- https://master.php.net/note/delete/112492/non-english Del: in docs -- https://master.php.net/note/delete/112492/in+docs Del: other reasons-- https://master.php.net/note/delete/112492 Reject -- https://master.php.net/note/reject/112492 Search -- https://master.php.net/manage/user-notes.php