Validate URL with javascript and php

Question

hi friends, I just want to validate url,for both folowing formats http://www.XYZ.com and www.XYZ.com i want this validation script in Javascript and PHP also. Thanks in advance.

Answer 1

Regex like a champ.

You could write one yourself, here's a quick example:

(https?://)?.+$

A little googling found me something a little more particular, in terms of more strictly validating:

^(https?://)?(([0-9a-z_!'().&=$%-]: )?[0-9a-z_!'().&=$%-]@)?(([0-9]{1,3}\.){3}[0-9]{1,3}|([0-9a-z_!'()-]\.)([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.[a-z]{2,6})(:[0-9]{1,4})?((/?)|(/[0-9a-z_!*'().;?:@&=$,%#-])/?)$

Source: http://www.geekzilla.co.uk/view2D3B0109-C1B2-4B4E-BFFD-E8088CBC85FD.htm (Obviously test the copied and pasted regex, as you would with any copy pasted code)

If you don't know how to use regexes in PHP, it's as simple as:

$valid = preg_match($pattern, $urlOrStringToValidate);

where $pattern = "/(https?:\/\/)?.+/" or something like that, between / and /

Javascript has an object method called match on the String type.

var urlString = "http://www.XYZ.com";
var isValidURL = urlString.match(/(https?:\/\/)?.+/);

Answer 2

You'd be best using a regular expression to do this. Something like this:

^((ht|f)tp(s?)\:\/\/|~/|/)?([\w]+:\w+@)?([a-zA-Z]{1}([\w\-]+\.)+([\w]{2,5}))(:[\d]{1,5})?((/?\w+/)+|/?)(\w+\.[\w]{3,4})?((\?\w+=\w+)?(&\w+=\w+)*)?

You can use regular expressions in PHP using the preg_match function and in JavaScript using the match() function.

E.g (Javascript).

function validateUrl(url)
{
    var pattern = '^((ht|f)tp(s?)\:\/\/|~/|/)?([\w]+:\w+@)?([a-zA-Z]{1}([\w\-]+\.)+([\w]{2,5}))(:[\d]{1,5})?((/?\w+/)+|/?)(\w+\.[\w]{3,4})?((\?\w+=\w+)?(&\w+=\w+)*)?';

    if(url.match(pattern))
    {
        return true;
    }
    else
    {
        return false;
    }
}

Answer 3

Use Jquery validator.