function similar to filter_var() in php4.3 ?

[Peter Parker]

I understand for php5 there is function filter_var as in
filter_var($var , FILTER_SANITIZE _URL);Is there similar function in php4.3?
Thank you

[Janwillem Borleffs]

Re: function similar to filter_var() in php4.3 ?

Peter Parker wrote:

I understand for php5 there is function filter_var as in
filter_var($var , FILTER_SANITIZE _URL);Is there similar function in
php4.3? Thank you
>

The function implements RFC 1738 validation rules for the
FILTER_SANITIZE _URL flag:

http://www.faqs.org/rfcs/rfc1738.html

There isn't a real equivalent in PHP < 5.2, but you might be able to do some
basic validation using parse_url:

http://www.php.net/parse_url

HTH;
JW