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Changeset 1372


Ignore:
Timestamp:
05/31/2004 05:02:09 PM (14 years ago)
Author:
michelvaldrighi
Message:

added iso8601 handling functions, to avoid ugly nasty conversions

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/wp-includes/functions-formatting.php

    r1361 r1372  
    415415}
    416416
     417// computes an offset in seconds from an iso8601 timezone
     418function iso8601_timezone_to_offset($timezone) {
     419  // $timezone is either 'Z' or '[+|-]hhmm'
     420  if ($timezone == 'Z') {
     421    $offset = 0;
     422  } else {
     423    $sign    = (substr($timezone, 0, 1) == '+') ? 1 : -1;
     424    $hours   = intval(substr($timezone, 1, 2));
     425    $minutes = intval(substr($timezone, 3, 4)) / 60;
     426    $offset  = $sign * 3600 * ($hours + $minutes);
     427  }
     428  return $offset;
     429}
     430
     431// converts an iso8601 date to MySQL DateTime format used by post_date[_gmt]
     432function iso8601_to_datetime($date_string, $timezone = USER) {
     433  if ($timezone == GMT) {
     434    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, $date_bits);
     435    if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset
     436      $offset = iso8601_timezone_to_offset($date_bits[7]);
     437    } else { // we don't have a timezone, so we assume user local timezone (not server's!)
     438      $offset = 3600 * get_settings('gmt_offset');
     439    }
     440    $timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]);
     441    $timestamp -= $offset;
     442    return gmdate('Y-m-d H:i:s', $timestamp);
     443  } elseif ($timezone == USER) {
     444    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);
     445  }
     446}
     447
    417448?>
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