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authorAndrey Andreev <narf@bofh.bg>2012-11-26 21:16:12 +0100
committerAndrey Andreev <narf@bofh.bg>2012-11-26 21:16:12 +0100
commitdaaca882e48e26e60bf2eea9f4fad108a845fb38 (patch)
tree4ae9ccaa8315a9fdbe23295b0d0163a153bee1bb /system/libraries/Form_validation.php
parent61797f67a9bcb357ae7e1be9dadffd58eaa3e540 (diff)
Add 'valid_url' rule to Form Validation (issue #1966)
Diffstat (limited to 'system/libraries/Form_validation.php')
-rw-r--r--system/libraries/Form_validation.php42
1 files changed, 42 insertions, 0 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