1572dd708SAndreas Gohr<?php 2572dd708SAndreas Gohr 3572dd708SAndreas Gohr/** 4572dd708SAndreas Gohr * FeedDate is an internal class that stores a date for a feed or feed item. 5572dd708SAndreas Gohr * Usually, you won't need to use this. 6572dd708SAndreas Gohr */ 7572dd708SAndreas Gohrclass FeedDate 8572dd708SAndreas Gohr{ 9572dd708SAndreas Gohr protected $unix; 10572dd708SAndreas Gohr 11572dd708SAndreas Gohr /** 12572dd708SAndreas Gohr * Creates a new instance of FeedDate representing a given date. 13572dd708SAndreas Gohr * Accepts RFC 822, ISO 8601 date formats as well as unix time stamps. 14572dd708SAndreas Gohr * 15572dd708SAndreas Gohr * @param mixed $dateString optional the date this FeedDate will represent. If not specified, the current date and 16572dd708SAndreas Gohr * time is used. 17572dd708SAndreas Gohr */ 18572dd708SAndreas Gohr public function __construct($dateString = "") 19572dd708SAndreas Gohr { 20572dd708SAndreas Gohr if ($dateString == "") { 21572dd708SAndreas Gohr $dateString = date("r"); 22572dd708SAndreas Gohr } 23572dd708SAndreas Gohr 24572dd708SAndreas Gohr if (is_integer($dateString)) { 25572dd708SAndreas Gohr $this->unix = $dateString; 26572dd708SAndreas Gohr 27572dd708SAndreas Gohr return; 28572dd708SAndreas Gohr } 29572dd708SAndreas Gohr $tzOffset = 0; 30572dd708SAndreas Gohr if (preg_match( 31572dd708SAndreas Gohr "~(?:(?: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+(.*)~", 32572dd708SAndreas Gohr $dateString, 33572dd708SAndreas Gohr $matches 34572dd708SAndreas Gohr )) { 35572dd708SAndreas Gohr $months = Array( 36572dd708SAndreas Gohr "Jan" => 1, 37572dd708SAndreas Gohr "Feb" => 2, 38572dd708SAndreas Gohr "Mar" => 3, 39572dd708SAndreas Gohr "Apr" => 4, 40572dd708SAndreas Gohr "May" => 5, 41572dd708SAndreas Gohr "Jun" => 6, 42572dd708SAndreas Gohr "Jul" => 7, 43572dd708SAndreas Gohr "Aug" => 8, 44572dd708SAndreas Gohr "Sep" => 9, 45572dd708SAndreas Gohr "Oct" => 10, 46572dd708SAndreas Gohr "Nov" => 11, 47572dd708SAndreas Gohr "Dec" => 12, 48572dd708SAndreas Gohr ); 49572dd708SAndreas Gohr $this->unix = mktime($matches[4], $matches[5], $matches[6], $months[$matches[2]], $matches[1], $matches[3]); 50572dd708SAndreas Gohr if (substr($matches[7], 0, 1) == '+' OR substr($matches[7], 0, 1) == '-') { 51572dd708SAndreas Gohr $tzOffset = (((int)substr($matches[7], 0, 3) * 60) + (int)substr($matches[7], -2)) * 60; 52572dd708SAndreas Gohr } else { 53572dd708SAndreas Gohr if (strlen($matches[7]) == 1) { 54572dd708SAndreas Gohr $oneHour = 3600; 55572dd708SAndreas Gohr $ord = ord($matches[7]); 56572dd708SAndreas Gohr if ($ord < ord("M")) { 57572dd708SAndreas Gohr $tzOffset = (ord("A") - $ord - 1) * $oneHour; 58572dd708SAndreas Gohr } elseif ($ord >= ord("M") AND $matches[7] != "Z") { 59572dd708SAndreas Gohr $tzOffset = ($ord - ord("M")) * $oneHour; 60572dd708SAndreas Gohr } elseif ($matches[7] == "Z") { 61572dd708SAndreas Gohr $tzOffset = 0; 62572dd708SAndreas Gohr } 63572dd708SAndreas Gohr } 64572dd708SAndreas Gohr switch ($matches[7]) { 65572dd708SAndreas Gohr case "UT": 66572dd708SAndreas Gohr case "GMT": 67572dd708SAndreas Gohr $tzOffset = 0; 68572dd708SAndreas Gohr } 69572dd708SAndreas Gohr } 70572dd708SAndreas Gohr $this->unix += $tzOffset; 71572dd708SAndreas Gohr 72572dd708SAndreas Gohr return; 73572dd708SAndreas Gohr } 74572dd708SAndreas Gohr if (preg_match("~(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})(.*)~", $dateString, $matches)) { 75572dd708SAndreas Gohr $this->unix = mktime($matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1]); 76572dd708SAndreas Gohr if (substr($matches[7], 0, 1) == '+' OR substr($matches[7], 0, 1) == '-') { 77572dd708SAndreas Gohr $tzOffset = (((int)substr($matches[7], 0, 3) * 60) + (int)substr($matches[7], -2)) * 60; 78572dd708SAndreas Gohr } else { 79572dd708SAndreas Gohr if ($matches[7] == "Z") { 80572dd708SAndreas Gohr $tzOffset = 0; 81572dd708SAndreas Gohr } 82572dd708SAndreas Gohr } 83572dd708SAndreas Gohr $this->unix += $tzOffset; 84572dd708SAndreas Gohr 85572dd708SAndreas Gohr return; 86572dd708SAndreas Gohr } 87572dd708SAndreas Gohr $this->unix = 0; 88572dd708SAndreas Gohr } 89572dd708SAndreas Gohr 90572dd708SAndreas Gohr /** 91572dd708SAndreas Gohr * Gets the date stored in this FeedDate as an RFC 822 date. 92572dd708SAndreas Gohr * 93572dd708SAndreas Gohr * @return string a date in RFC 822 format 94572dd708SAndreas Gohr */ 95572dd708SAndreas Gohr public function rfc822() 96572dd708SAndreas Gohr { 97572dd708SAndreas Gohr //return gmdate("r",$this->unix); 98572dd708SAndreas Gohr $date = gmdate("D, d M Y H:i:s O", $this->unix); 99572dd708SAndreas Gohr 100572dd708SAndreas Gohr return $date; 101572dd708SAndreas Gohr } 102572dd708SAndreas Gohr 103572dd708SAndreas Gohr /** 104572dd708SAndreas Gohr * Gets the date stored in this FeedDate as an ISO 8601 date. 105572dd708SAndreas Gohr * 106572dd708SAndreas Gohr * @return string a date in ISO 8601 format 107572dd708SAndreas Gohr */ 108572dd708SAndreas Gohr public function iso8601() 109572dd708SAndreas Gohr { 110*e43cd7e1SAndreas Gohr $date = gmdate("Y-m-d\TH:i:sP", $this->unix); 111572dd708SAndreas Gohr 112572dd708SAndreas Gohr return $date; 113572dd708SAndreas Gohr } 114572dd708SAndreas Gohr 115572dd708SAndreas Gohr /** 116572dd708SAndreas Gohr * Gets the date stored in this FeedDate as unix time stamp. 117572dd708SAndreas Gohr * 118572dd708SAndreas Gohr * @return int a date as a unix time stamp 119572dd708SAndreas Gohr */ 120572dd708SAndreas Gohr public function unix() 121572dd708SAndreas Gohr { 122572dd708SAndreas Gohr return $this->unix; 123572dd708SAndreas Gohr } 124572dd708SAndreas Gohr} 125