- var_dump: documentation ( source)
- preg_match: documentation ( source)
<?php
function isPhoneNumber($number) {
return preg_match("/^\+[0-9]{2}\.[0-9]{10}$/", $number);
}
var_dump(isPhoneNumber("+44.1202535689"));
var_dump(isPhoneNumber("aaa+44.1202535689aa"));
var_dump(isPhoneNumber("foo"));