- var_dump: documentation ( source)
- preg_match: documentation ( source)
- filter_var: documentation ( source)
<?php
var_dump(filter_var('publisher@i-butler.de', FILTER_VALIDATE_EMAIL));
var_dump(preg_match(
"/^[a-z0-9._\-ÄÖÜäöüß\+]+@[A-Z0-9.\-ÄÖÜäöü]{1,63}\.[A-Z]{2,6}$/ui",
'publisher@i-butler.de'
));