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URL Validation

$url = 'http://example.com';
$validation = filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_HOST_REQUIRED);

if ( $validation ) $output = 'proper URL';
else $output = 'wrong URL';

echo $output;

Comments

  1. Will
    Permalink to comment#

    $output = ‘proper UL';
    I think there is a typo in that line.

  2. Emilio CS
    Permalink to comment#

    I think it needs improvements. The code will pass the url “http://www.example” as valid url.

  3. Aneek Mukhopadhyay
    Permalink to comment#

    filter_var is good one but I still have faith in good old preg_match() and the regular expressions.

    preg_match(“#^http(s)?://[a-z0-9-_.]+\.[a-z]{2,4}#i”,$url);

  4. Heinrich Reimer
    Permalink to comment#

    My regex for URL validation (validates GET variables and “#” after URLs too):

    preg_match("/^(https?:\/\/)([\da-z\.-]+)\.([a-z\.]{2,6})(\/([\da-z\.-]+))*\/?(([\w\.-]+)\.([\da-z]{2,6}))?((\#[\w\.-]+)|(\?([\da-z]+(=[\da-z]+)?)(&([\da-z]+(=[\da-z]+)?))*))?/i", $url);

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