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Diffstat (limited to 'includes/classes/FeedDate.php')
| -rwxr-xr-x | includes/classes/FeedDate.php | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/includes/classes/FeedDate.php b/includes/classes/FeedDate.php new file mode 100755 index 0000000..9f80bbb --- /dev/null +++ b/includes/classes/FeedDate.php @@ -0,0 +1,103 @@ +<?php +namespace Bitweaver\Rss; + +/** + * @package rss + * FeedDate is an internal class that stores a date for a feed or feed item. + * Usually, you won't need to use this. + */ +class FeedDate { + public $unix; + + /** + * Creates a new instance of FeedDate representing a given date. + * Accepts RFC 822, ISO 8601 date formats as well as unix time stamps. + * @param mixed $dateString optional the date this FeedDate will represent. If not specified, the current date and time is used. + */ + public function __construct($dateString="") { + if ($dateString=="") $dateString = date("r"); + + if (is_numeric($dateString)) { + $this->unix = $dateString; + return; + } + if (preg_match( "~(?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\\s+)?(\\d{1,2})\\s+([a-zA-Z][3])\\s+(\\d{4})\\s+(\\d[2]):(\\d[2]):(\\d[2])\\s+(.*)~", $dateString, $matches )) { + $months = [ "Jan" => 1, "Feb" => 2, "Mar" => 3, "Apr" => 4, "May" => 5, "Jun" => 6, "Jul" => 7, "Aug" => 8, "Sep" => 9, "Oct" => 10, "Nov" => 11, "Dec" => 12 ]; + $this->unix = mktime( $matches[4], $matches[5], $matches[6], $months[$matches[2]], $matches[1], $matches[3] ); + if (substr( $matches[7], 0, 1 ) == '+' OR substr( $matches[7], 0, 1 ) == '-') { + $tzOffset = ( substr( $matches[7], 0, 3 ) * 60 + substr( $matches[7], -2 ) ) * 60; + } else { + if (strlen( $matches[7] ) == 1) { + $oneHour = 3600; + $ord = ord( $matches[7] ); + if ($ord < ord( "M" )) { + $tzOffset = ( ord( "A" ) - $ord - 1 ) * $oneHour; + } elseif ($ord >= ord("M") AND $matches[7]!="Z") { + $tzOffset = ($ord - ord("M")) * $oneHour; + } elseif ($matches[7]=="Z") { + $tzOffset = 0; + } + } + switch ($matches[7]) { + case "UT": + case "GMT": + $tzOffset = 0; + } + } + $this->unix += $tzOffset; + return; + } + if (preg_match( "~(\\d[4])-(\\d[2])-(\\d[2])T(\\d[2]):(\\d[2]):(\\d[2])(.*)~", $dateString, $matches )) { + $this->unix = mktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] ); + if (substr( $matches[7], 0, 1 ) == '+' OR substr( $matches[7], 0, 1 ) == '-') { + $tzOffset = ( substr( $matches[7], 0, 3 ) * 60 + substr( $matches[7], -2 ) ) * 60; + } else { + if ($matches[7] == "Z") { + $tzOffset = 0; + } + } + $this->unix += $tzOffset; + return; + } + $this->unix = 0; + } + + /** + * Gets the date stored in this FeedDate as an RFC 822 date. + * + * @return string a date in RFC 822 format + */ + public function rfc822() { + //return gmdate("r",$this->unix); + $date = gmdate("D, d M Y H:i:s", $this->unix); + + if (TIME_ZONE!="") { + $date .= " ".str_replace(":","",TIME_ZONE); + } else { + $date .= " ".str_replace(":","","GMT"); + } + return $date; + } + + /** + * Gets the date stored in this FeedDate as an ISO 8601 date. + * + * @return string a date in ISO 8601 format + */ + public function iso8601() { + $date = gmdate("Y-m-d\TH:i:sO",$this->unix); + $date = substr($date,0,22) . ':' . substr($date,-2); + if (TIME_ZONE!="") $date = str_replace("+00:00",TIME_ZONE,$date); + return $date; + } + + /** + * Gets the date stored in this FeedDate as unix time stamp. + * + * @return string a date as a unix time stamp + */ + public function unix() { + return $this->unix; + } + +}
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