From 38293cef03c85af25bc74e111bc9e556d7ca509c Mon Sep 17 00:00:00 2001 From: michelvaldrighi Date: Mon, 31 May 2004 17:02:09 +0000 Subject: [PATCH] added iso8601 handling functions, to avoid ugly nasty conversions git-svn-id: http://svn.automattic.com/wordpress/trunk@1372 1a063a9b-81f0-0310-95a4-ce76da25c4cd --- wp-includes/functions-formatting.php | 31 ++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/wp-includes/functions-formatting.php b/wp-includes/functions-formatting.php index 5b9ab97f1c..8e47f8dbda 100644 --- a/wp-includes/functions-formatting.php +++ b/wp-includes/functions-formatting.php @@ -414,4 +414,35 @@ function get_date_from_gmt($string) { return $string_localtime; } +// computes an offset in seconds from an iso8601 timezone +function iso8601_timezone_to_offset($timezone) { + // $timezone is either 'Z' or '[+|-]hhmm' + if ($timezone == 'Z') { + $offset = 0; + } else { + $sign = (substr($timezone, 0, 1) == '+') ? 1 : -1; + $hours = intval(substr($timezone, 1, 2)); + $minutes = intval(substr($timezone, 3, 4)) / 60; + $offset = $sign * 3600 * ($hours + $minutes); + } + return $offset; +} + +// converts an iso8601 date to MySQL DateTime format used by post_date[_gmt] +function iso8601_to_datetime($date_string, $timezone = USER) { + if ($timezone == GMT) { + preg_match('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', $date_string, $date_bits); + if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset + $offset = iso8601_timezone_to_offset($date_bits[7]); + } else { // we don't have a timezone, so we assume user local timezone (not server's!) + $offset = 3600 * get_settings('gmt_offset'); + } + $timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]); + $timestamp -= $offset; + return gmdate('Y-m-d H:i:s', $timestamp); + } elseif ($timezone == USER) { + return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string); + } +} + ?> \ No newline at end of file