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class.json-api-date.php
55 lines
| 1 | <?php |
| 2 | |
| 3 | class WPCOM_JSON_API_Date { |
| 4 | /** |
| 5 | * Returns ISO 8601 formatted datetime: 2011-12-08T01:15:36-08:00 |
| 6 | * |
| 7 | * @param $date_gmt (string) GMT datetime string. |
| 8 | * @param $date (string) Optional. Used to calculate the offset from GMT. |
| 9 | * |
| 10 | * @return string |
| 11 | */ |
| 12 | static function format_date( $date_gmt, $date = null ) { |
| 13 | $timestamp_gmt = strtotime( "$date_gmt+0000" ); |
| 14 | |
| 15 | if ( null === $date ) { |
| 16 | $timestamp = $timestamp_gmt; |
| 17 | $hours = $minutes = $west = 0; |
| 18 | } else { |
| 19 | $date_time = date_create( "$date+0000" ); |
| 20 | if ( $date_time ) { |
| 21 | $timestamp = date_format( $date_time, 'U' ); |
| 22 | } else { |
| 23 | $timestamp = 0; |
| 24 | } |
| 25 | |
| 26 | // "0000-00-00 00:00:00" == -62169984000 |
| 27 | if ( - 62169984000 == $timestamp_gmt ) { |
| 28 | // WordPress sets post_date=now, post_date_gmt="0000-00-00 00:00:00" for all drafts |
| 29 | // WordPress sets post_modified=now, post_modified_gmt="0000-00-00 00:00:00" for new drafts |
| 30 | |
| 31 | // Try to guess the correct offset from the blog's options. |
| 32 | $timezone_string = get_option( 'timezone_string' ); |
| 33 | |
| 34 | if ( $timezone_string && $date_time ) { |
| 35 | $timezone = timezone_open( $timezone_string ); |
| 36 | if ( $timezone ) { |
| 37 | $offset = $timezone->getOffset( $date_time ); |
| 38 | } |
| 39 | } else { |
| 40 | $offset = 3600 * get_option( 'gmt_offset' ); |
| 41 | } |
| 42 | } else { |
| 43 | $offset = $timestamp - $timestamp_gmt; |
| 44 | } |
| 45 | |
| 46 | $west = $offset < 0; |
| 47 | $offset = abs( $offset ); |
| 48 | $hours = (int) floor( $offset / 3600 ); |
| 49 | $offset -= $hours * 3600; |
| 50 | $minutes = (int) floor( $offset / 60 ); |
| 51 | } |
| 52 | |
| 53 | return (string) gmdate( 'Y-m-d\\TH:i:s', $timestamp ) . sprintf( '%s%02d:%02d', $west ? '-' : '+', $hours, $minutes ); |
| 54 | } |
| 55 | } |