diff options
| -rw-r--r-- | system/libraries/Form_validation.php | 42 | ||||
| -rw-r--r-- | user_guide_src/source/changelog.rst | 5 | ||||
| -rw-r--r-- | user_guide_src/source/libraries/form_validation.rst | 1 |
3 files changed, 46 insertions, 2 deletions
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php index 04bb81db7..b7bd280ee 100644 --- a/system/libraries/Form_validation.php +++ b/system/libraries/Form_validation.php @@ -1084,6 +1084,48 @@ class CI_Form_validation { // -------------------------------------------------------------------- /** + * Valid URL + * + * @param string $str + * @return bool + */ + public function valid_url($str) + { + if (empty($str)) + { + return FALSE; + } + elseif (preg_match('/^(?:([^:]*)\:)?\/\/(.+)$/', $str, $matches)) + { + if (empty($matches[2])) + { + return FALSE; + } + elseif ( ! in_array($matches[1], array('http', 'https'), TRUE)) + { + return FALSE; + } + + $str = $matches[2]; + } + + $str = 'http://'.$str; + + // There's a bug affecting PHP 5.2.13, 5.3.2 that considers the + // underscore to be a valid hostname character instead of a dash. + // Reference: https://bugs.php.net/bug.php?id=51192 + if (version_compare(PHP_VERSION, '5.2.13', '==') === 0 OR version_compare(PHP_VERSION, '5.3.2', '==') === 0) + { + sscanf($str, 'http://%[^/]', $host); + $str = substr_replace($str, strtr($host, array('_' => '-', '-' => '_')), 7, strlen($host)); + } + + return (filter_var($str, FILTER_VALIDATE_URL) !== FALSE); + } + + // -------------------------------------------------------------------- + + /** * Valid Email * * @param string diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst index e1e6df6ce..2ec7e43ea 100644 --- a/user_guide_src/source/changelog.rst +++ b/user_guide_src/source/changelog.rst @@ -220,11 +220,12 @@ Release Date: Not Released - Added method ``reset_validation()`` which resets internal validation variables in case of multiple validation routines. - Added support for setting error delimiters in the config file via ``$config['error_prefix']`` and ``$config['error_suffix']``. - ``_execute()`` now considers input data to be invalid if a specified rule is not found. - - Removed method ``is_numeric()`` as it exists as a native PHP function and ``_execute()`` will find and use that (the *is_numeric* rule itself is deprecated since 1.6.1). + - Removed method ``is_numeric()`` as it exists as a native PHP function and ``_execute()`` will find and use that (the **is_numeric** rule itself is deprecated since 1.6.1). - Native PHP functions used as rules can now accept an additional parameter, other than the data itself. - Updated ``set_rules()`` to accept an array of rules as well as a string. - Fields that have empty rules set no longer run through validation (and therefore are not considered erroneous). - - Added rule *differs* to check if the value of a field differs from the value of another field. + - Added rule **differs* to check if the value of a field differs from the value of another field. + - Added rule **valid_url**. - Added support for setting :doc:`Table <libraries/table>` class defaults in a config file. - :doc:`Caching Library <libraries/caching>` changes include: - Added Wincache driver. diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst index b1f466f4c..7478ca0ef 100644 --- a/user_guide_src/source/libraries/form_validation.rst +++ b/user_guide_src/source/libraries/form_validation.rst @@ -894,6 +894,7 @@ Rule Parameter Description 0, 1, 2, 3, etc. **is_natural_no_zero** No Returns FALSE if the form element contains anything other than a natural number, but not zero: 1, 2, 3, etc. +**valid_url** No Returns FALSE if the form element does not contain a valid URL. **valid_email** No Returns FALSE if the form element does not contain a valid email address. **valid_emails** No Returns FALSE if any value provided in a comma separated list is not a valid email. **valid_ip** No Returns FALSE if the supplied IP is not valid. |