1 files changed, 15 insertions, 0 deletions
diff --git a/inc/common.php b/inc/common.php
index 881179f4b..18f782788 100644
--- a/inc/common.php
+++ b/inc/common.php
@@ -1266,6 +1266,21 @@ function dformat($dt=null,$format=''){
 }
 
 /**
+ * Formats a timestamp as ISO 8601 date
+ *
+ * @author <ungu at terong dot com>
+ * @link http://www.php.net/manual/en/function.date.php#54072
+ */
+function date_iso8601($int_date) {
+   //$int_date: current date in UNIX timestamp
+   $date_mod = date('Y-m-d\TH:i:s', $int_date);
+   $pre_timezone = date('O', $int_date);
+   $time_zone = substr($pre_timezone, 0, 3).":".substr($pre_timezone, 3, 2);
+   $date_mod .= $time_zone;
+   return $date_mod;
+}
+
+/**
  * return an obfuscated email address in line with $conf['mailguard'] setting
  *
  * @author Harry Fuecks <hfuecks@gmail.com>