- var_dump: documentation ( source)
- filter_var: documentation ( source)
<?php
var_dump(filter_var('user@[IPv6:2001:db8:1ff::a0b:dbd0]', FILTER_VALIDATE_EMAIL));
var_dump(filter_var('"much.more unusual"@example.com', FILTER_VALIDATE_EMAIL));
var_dump(filter_var('foo+bar@baz.com', FILTER_VALIDATE_EMAIL));