CODEWITHSUNDEEP
phppreg-match
themhz
themhz

Reputation: 8424

Determining if a URL contains a certain hostname

I need to make a regular expression for php preg_match that does the following matching.

This is the function

function isValidURL($url,$searchfor){
    return preg_match("/\b.$searchfor \b/i", $url);
}

I need to find the somedomain.com in the following Possible Strings entering the function

http://www.somedomain.com
http://somedomain.com
http://www.somedomain.com/anything
http://somedomain.com/anything
http://anything/somedomain.com

So I need a regular expression that does this

http://www.somedomain.com           Will Match
http://somedomain.com               Will Match
http://www.somedomain.com/anything  Will Match
http://somedomain.com/anything      Will Match

but

http://anything/somedomain.com      Will NOT match

Upvotes: 0

Views: 1965

Answers (3)

user212218
user212218

Reputation:

What about using parse_url()?

if( strpos(parse_url($url, PHP_URL_HOST), 'somedomain.com') !== false )
{
  // hostname contains 'somedomain.com'.
}

Upvotes: 3

mario
mario

Reputation: 145472

All this requires is a placeholder for the URL beginning. Excluding slashes with a negated character class [^/] might already be sufficient:

function isValidURL($url,$searchfor){
    return preg_match("~http://[^/\s]*\.$searchfor(/|$|\s)~i", $url);
}

Note that this fails some edge cases, like user:pw@ pairs. And no idea if your $searchfor was supposed to contain the TLD already. Also don't forget to preg_quote it.

Upvotes: 1

Jaco Van Niekerk
Jaco Van Niekerk

Reputation: 4182

Try this... 

$url = "http://komunitasweb.com/";
if (preg_match('/^(http|https|ftp)://([A-Z0-9][A-Z0-9_-]*(?:.[A-Z0-9][A-Z0-9_-]*)+):?   (d+)?/?/i', $url)) {
    echo "Your url is ok.";
} else {
    echo "Wrong url.";
}

Copied from a google searh on "php url regular expression". Check google out, awesome tool. :-)

Upvotes: 2

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