Menu
Community /Pin to ProfileBookmark
@NogDogApr 18.2021 — #Do you really want to allow FTP links?
As far as everything else, it appears (to my eye, haven't tested it) that it would allow addresses without the "http://" or "https://" as long as they start with "www.". Not sure you want to have to deal with that variation downstream? Also not sure if the whole thing is being too strict in 2021 allowing only ASCII characters for the entire URL?
As far as what I'd actually do if I were doing this, I'd have to do a fair amount of research -- but probably would search github and such for an existing function that is well documented, well rated, updated reasonably recently, and from a respectable-looking source. Ultimately, I'd probably want to do some minimal check that it at least _looks_ like it's a URL, then use cURL to test if it gets a 200 HTTP response or not.
Is This Valid Url FoolProof Regex ?
Folks,
Check this out from tutorial:
[code]
$website = input($_POST[“site”]);
if (!preg_match(“/b(?:(?:https?|ftp)://|www.)[-a-z0-9+&@#/%?=~_|!:,.;]*[-a-z0-9+&@#/%=~_|]/i”,$website)) {
$websiteErr = “Invalid URL”;
}
Is it foolproof ? Can I use it in my “Url Submission Form” ? Yes or no ? Regardless, you got a better one ?
Sign in
to post a comment5 Comments(s) ↴
0
@NogDogApr 18.2021 — #Do you really want to allow FTP links?As far as everything else, it appears (to my eye, haven't tested it) that it would allow addresses without the "http://" or "https://" as long as they start with "www.". Not sure you want to have to deal with that variation downstream? Also not sure if the whole thing is being too strict in 2021 allowing only ASCII characters for the entire URL?
As far as what I'd actually do if I were doing this, I'd have to do a fair amount of research -- but probably would search github and such for an existing function that is well documented, well rated, updated reasonably recently, and from a respectable-looking source. Ultimately, I'd probably want to do some minimal check that it at least _looks_ like it's a URL, then use cURL to test if it gets a 200 HTTP response or not.