PHP regex to check the matching given URL

Question

How do you check if a given URL matches at least a sitename?

I have:

$url_to_match = 'http://sub.somesite.com/';

I want to say "MATCH found" for input starting with http://sub.somesite.com only.

Any help would be very much appreciated.

Andy · Accepted Answer · 2012-01-05 17:41:54Z

2

Use PHP's parse_url():

$url = 'http://sub.somesite.com/';
if ('sub.somesite.com' === parse_url($url, PHP_URL_HOST)) {
    // we have a match
}

answered Jan 5, 2012 at 17:41

Andy

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2 Comments

cmbuckley Over a year ago

+1 for the right tool for the job. Depends if the OP wants to validate the scheme too.

swan Over a year ago

Thanks a lot, did the job well. I was confused with lots of regex approaches :) But this is simpler.

xkeshav · Accepted Answer · 2012-01-05 18:04:20Z

1

use parse_url

example:

function match_url($base,$input)
{
    $base_host = parse_url($base,PHP_URL_HOST);
    $input_host = parse_url($input,PHP_URL_HOST);
    if( $base_host === $input_host ) {
        return true;
    }
    else
    {
        return false;
    }   
}
$base_url = 'http://sub.somesite.com';
$input_url = 'http://sub.somesite.com//bla/bla';
echo (match_url($base_url,$input_url)) ? "URL matched" : "URL mismatched";

edited Jan 5, 2012 at 18:04

answered Jan 5, 2012 at 17:52

xkeshav

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Comments

Xeoncross · Accepted Answer · 2012-01-05 17:39:22Z

0

I think you need to tell us what you are doing since this request makes no design sense.

However, to answer the question.

if(strpos($url_to_match, 'http://sub.anothersite.com/bla') !== FALSE) print 'bad string';

answered Jan 5, 2012 at 17:39

Xeoncross

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3 Comments

aurelijusv Over a year ago

This is wrong usage of strpos() (syntax error), but yes, based on the question, you need to use strpos(), read here lt.php.net/strpos

Xeoncross Over a year ago

@AurelijusValeiša, good catch, I can't believe I forgot the $haystack. XD

swan Over a year ago

I have clarified my question. I am afraid doing checking the opposite is not what I meant. Thanks

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