is_alphanumeric (line 27)
Find whether the specified string is alphanumeric or not.
boolean
is_alphanumeric
(string $string)
-
string
$string: The string to test
is_valid_email_address (line 40)
Find whether the specified address is a valid e-mail address or not.
boolean
is_valid_email_address
(string $string)
-
string
$string: The string to test (Note: This is typed string, not e-mail, because it has to function on failure + we could make an infinite loop)