diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/util.php | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/util.php b/lib/util.php index 03b1e42a9..771a4880c 100644 --- a/lib/util.php +++ b/lib/util.php @@ -598,3 +598,11 @@ function common_debug($msg, $filename=NULL) { function common_valid_http_url($url) { return Validate::uri($url, array('allowed_schemes' => array('http', 'https'))); } + +function common_valid_tag($tag) { + if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) { + return (Validate::email($matches[1]) || + preg_match('/^([\w-\.]+)$/', $matches[1])); + } + return false; +} |