function valid_url in Drupal 7

Same name and namespace in other branches

1. 4 includes/common.inc \valid_url()
2. 5 includes/common.inc \valid_url()
3. 6 includes/common.inc \valid_url()

Verifies the syntax of the given URL.

This function should only be used on actual URLs. It should not be used for Drupal menu paths, which can contain arbitrary characters. Valid values per RFC 3986.

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

11 calls to valid_url()

aggregator_form_feed_validate in modules/aggregator/aggregator.admin.inc

Form validation handler for aggregator_form_feed().

aggregator_form_opml_submit in modules/aggregator/aggregator.admin.inc

Form submission handler for aggregator_form_opml().

aggregator_form_opml_validate in modules/aggregator/aggregator.admin.inc

Form validation handler for aggregator_form_opml().

comment_form_validate in modules/comment/comment.module

Validate comment form submissions.

CommonURLUnitTest::testDrupalParseUrl in modules/simpletest/tests/common.test

Test drupal_parse_url().

... See full list

File

includes/common.inc, line 1268

Common functions that many Drupal modules will need to reference.

Code

function valid_url($url, $absolute = FALSE) {
  if ($absolute) {
    return (bool) preg_match("\n      /^                                                      # Start at the beginning of the text\n      (?:ftp|https?|feed):\\/\\/                                # Look for ftp, http, https or feed schemes\n      (?:                                                     # Userinfo (optional) which is typically\n        (?:(?:[\\w\\.\\-\\+!\$&'\\(\\)*\\+,;=]|%[0-9a-f]{2})+:)*      # a username or a username and password\n        (?:[\\w\\.\\-\\+%!\$&'\\(\\)*\\+,;=]|%[0-9a-f]{2})+@          # combination\n      )?\n      (?:\n        (?:[a-z0-9\\-\\.]|%[0-9a-f]{2})+                        # A domain name or a IPv4 address\n        |(?:\\[(?:[0-9a-f]{0,4}:)*(?:[0-9a-f]{0,4})\\])         # or a well formed IPv6 address\n      )\n      (?::[0-9]+)?                                            # Server port number (optional)\n      (?:[\\/|\\?]\n        (?:[\\w#!:\\.\\?\\+=&@\$'~*,;\\/\\(\\)\\[\\]\\-]|%[0-9a-f]{2})   # The path and query (optional)\n      *)?\n    \$/xi", $url);
  }
  else {
    return (bool) preg_match("/^(?:[\\w#!:\\.\\?\\+=&@\$'~*,;\\/\\(\\)\\[\\]\\-]|%[0-9a-f]{2})+\$/i", $url);
  }
}