- var_dump: documentation ( source)
- filter_var: documentation ( source)
<?php
var_dump((bool) filter_var('email@example.com', FILTER_VALIDATE_EMAIL));
var_dump((bool) filter_var('http://google.com', FILTER_VALIDATE_URL));
var_dump((bool) filter_var('http://google', FILTER_VALIDATE_URL));
var_dump((bool) filter_var('test', FILTER_VALIDATE_EMAIL));