php实现的RSS生成类实例

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

class RSS

{

var $title;

var $link;

var $description;

var $language = "en-us";

var $pubDate;

var $items;

var $tags;

function RSS()

{

$this->items = array();

$this->tags = array();

}

function addItem($item)

{

$this->items[] = $item;

}

function setPubDate($when)

{

if(strtotime($when) == false)

$this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";

else

$this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";

}

function getPubDate()

{

if(empty($this->pubDate))

return date("D, d M Y H:i:s ") . "GMT";

else

return $this->pubDate;

}

function addTag($tag, $value)

{

$this->tags[$tag] = $value;

}

function out()

{

$out = $this->header();

$out .= "<channel>\n";

$out .= "<title>" . $this->title . "</title>\n";

$out .= "<link>" . $this->link . "</link>\n";

$out .= "<description>" . $this->description . "</description>\n";

$out .= "<language>" . $this->language . "</language>\n";

$out .= "<pubDate>" . $this->getPubDate() . "</pubDate>\n";

foreach($this->tags as $key => $val) $out .= "<$key>$val</$key>\n";

foreach($this->items as $item) $out .= $item->out();

$out .= "</channel>\n";

$out .= $this->footer();

$out = str_replace("&", "&", $out);

return $out;

}

function serve($contentType = "application/xml")

{

$xml = $this->out();

header("Content-type: $contentType");

echo $xml;

}

function header()

{

$out = '<?xml version="1.0" encoding="utf-8"?>' . "\n";

$out .= '<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">' . "\n";

return $out;

}

function footer()

{

return '</rss>';

}

}

class RSSItem

{

var $title;

var $link;

var $description;

var $pubDate;

var $guid;

var $tags;

var $attachment;

var $length;

var $mimetype;

function RSSItem()

{

$this->tags = array();

}

function setPubDate($when)

{

if(strtotime($when) == false)

$this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";

else

$this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";

}

function getPubDate()

{

if(empty($this->pubDate))

return date("D, d M Y H:i:s ") . "GMT";

else

return $this->pubDate;

}

function addTag($tag, $value)

{

$this->tags[$tag] = $value;

}

function out()

{

$out .= "<item>\n";

$out .= "<title>" . $this->title . "</title>\n";

$out .= "<link>" . $this->link . "</link>\n";

$out .= "<description>" . $this->description . "</description>\n";

$out .= "<pubDate>" . $this->getPubDate() . "</pubDate>\n";

if($this->attachment != "")

$out .= "<enclosure url='{$this->attachment}' length='{$this->length}' type='{$this->mimetype}' />";

if(empty($this->guid)) $this->guid = $this->link;

$out .= "<guid>" . $this->guid . "</guid>\n";

foreach($this->tags as $key => $val) $out .= "<$key>$val</$key\n>";

$out .= "</item>\n";

return $out;

}

function enclosure($url, $mimetype, $length)

{

$this->attachment = $url;

$this->mimetype = $mimetype;

$this->length = $length;

}

}

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

$feed = new RSS();

$feed->title = "RSS Feed Title";

$feed->link = "http://website.com";

$feed->description = "Recent articles on your website.";

$db->query($query);

$result = $db->result;

while($row = mysql_fetch_array($result, MYSQL_ASSOC))

{

$item = new RSSItem();

$item->title = $title;

$item->link = $link;

$item->setPubDate($create_date);

$item->description = "<![CDATA[ $html ]]>";

$feed->addItem($item);

}

echo $feed->serve();