Validate URL

[The Spirit]

Im want to validate a URL in my php script and cant quite get it working.

Im trying to use

if (preg_match($pattern, $link) === false)

I have it working in javascript but php is being a problem

Heres the Regex

(/^(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?$/i);

 

Anyone have a solution?

Thanks

**edit the regex in this post gets changed by smilies inserting themselves

The regex can be seen here http://pastebin.com/4kU801pE

Edited May 6, 2013 by The Spirit

[KyleMassacre]

If your using >= 5.2 you can try filter_var()

[The Spirit]

filter_var() allows a number of urls I deem not valid for my purpose, thanks though

[sniko]

filter_var() allows a number of urls I deem not valid for my purpose, thanks though

What kind do you deem valid for purpose, then?

Tell us your rule set, and we'll regex that

[The Spirit]

a, http://a, http://www.a //Not Valid

http://localhost //not valid

test.com //not valid

http://test.com //valid

http://www.test.com //valid

http://www.test.com?searchblah&blajjj //valid

http://www.te$%^$.com //not valid

http://test.1223 //Not Valid

http://test.co //valid

http://test.co.uk //valid

http://sub.test.com //valid

[sniko]

a, http://a, http://www.a //Not Valid

http://localhost //not valid

test.com //not valid

http://test.com //valid

http://www.test.com //valid

http://www.test.com?searchblah&blajjj //valid

http://www.te$%^$.com //not valid

http://test.1223 //Not Valid

http://test.co //valid

http://test.co.uk //valid

http://sub.test.com //valid

I'm a little rusty on regex, however, try this :?

[http://]+([www.])+[a-zA-Z0-9-]*+.+(a-z)*

[The Spirit]

Im getting an Unknown modifier '+' error :/

I'd really like to use the same regex as im using for the javascript but it doesnt seem to want to work with php

[bluegman991]

Try this out. Tested and matches all of your valid examples (except http://www.test.com?searchblah&blajjj which should be http://www.test.com/?searchblah&blajjj), and does not match all of your invalid examples.

$reg='/^http\:\/\/(?:[a-zA-Z][a-zA-Z0-9]+)(?:\.[a-zA-Z][a-zA-Z0-9]+)*\.(?:com|co\.uk|co)(?:\/.*)?$/';

[Djkanna]

My Regex is also sub par:

<?php

$urls = array (
   'a',
   'http://a',
   'www.a',
   'test.com',
   'http://test.com',
   'http://www.test.com',
   'http://www.test.com?searchblah&blajjj',
   'http://www.te$%^$.com',
   'http://test.1223',
   'http://test.co',
   'http://test.co.uk',
   'http://sub.test.com',
);


foreach ( $urls as $url ) {
   echo $url.' --- '. ( preg_match ( '#^http(s)?://(www\.)?([a-z0-9_\-\.]+)\.([a-z\.]){2,5}([/\?&\#\w=]+)?$#', $url ) ? 'Valid' : 'Not Valid' ).
   '<br />';
}

a --- Not Valid
http://a --- Not Valid
www.a --- Not Valid
test.com --- Not Valid
http://test.com --- Valid
http://www.test.com --- Valid
http://www.test.com?searchblah&blajjj --- Valid
http://www.te$%^$.com --- Not Valid
http://test.1223 --- Not Valid
http://test.co --- Valid
http://test.co.uk --- Valid
http://sub.test.com --- Valid

Edit: Edited expression to match '=' also ( for the likes of ?blah=123 )

[The Spirit]

Thanks Djk and Bluegman!

Djk Im using yours, the only problem I have is that it allows urls such as http://test

Edited May 6, 2013 by The Spirit

[Djkanna]

It shouldn't do, or at least in my tests it doesn't.

[The Spirit]

Cant seem to get it working :/

This is the code im using:

else if ((!preg_match('#^http(s)?://(www\.)?([a-z0-9_\-\.]+)\.([a-z\.]){2,5}([/\?&\#\w=]+)?$#', $url))) {
			$return['error'] = true;
			$return['msg'] = 'URL not valid';
		}

Edited May 7, 2013 by The Spirit