valid_url

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Definition

valid_url($url, $absolute = FALSE)
includes/common.inc, line 584

Description

Verify the syntax of the given URL.

Parameters

$url The URL to verify.

$absolute Whether the URL is absolute (beginning with a scheme such as "http:").

Return value

TRUE if the URL is in a valid format.

Related topics

Name	Description
Input validation	Functions to validate user input.

Code

<?php
function valid_url($url, $absolute = FALSE) {
  $allowed_characters = '[a-z0-9\/:_\-_\.\?\$,~=#&%\+]';
  if ($absolute) {
    return preg_match("/^(http|https|ftp):\/\/". $allowed_characters ."+$/i", $url);
  }
  else {
    return preg_match("/^". $allowed_characters ."+$/i", $url);
  }
}
?>