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PHP class for reading xml

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  1. #------------------------------------------

  2. #
  3. # XML Library, by Keith Devens, version 1.2b
  4. # http://keithdevens.com/software/phpxml
  5. #
  6. # This code is Open Source, released under terms similar to the Artistic License.
  7. # Read the license at http://keithdevens.com/software/license
  8. #
  9. #------------------------------------------
  10. # XML_unserialize: takes raw XML as a parameter (a string)
  11. # and returns an equivalent PHP data structure
  12. #------------------------------------------
  13. function & XML_unserialize(&$xml){
  14. $xml_parser = &new XML();
  15. $data = &$xml_parser->parse($xml);
  16. $xml_parser->destruct();
  17. return $data;
  18. }
  19. -----------------------#####
  20. # XML_serialize: serializes any PHP data structure into XML
  21. # Takes one parameter: the data to serialize. Must be an array.
  22. -----------------------#
  23. function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
  24. if($level == 0){ ob_start(); echo '',"n"; }
  25. while(list($key, $value) = each($data))
  26. if(!strpos($key, ' attr')) #if it's not an attribute
  27. #we don't treat attributes by themselves, so for an empty element
  28. # that has attributes you still need to set the element to NULL

  29. if(is_array($value) and array_key_exists(0, $value)){

  30. XML_serialize($value, $level, $key);
  31. }else{
  32. $tag = $prior_key ? $prior_key : $key;
  33. echo str_repeat("t", $level),'<',$tag;
  34. if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
  35. while(list($attr_name, $attr_value) = each($data["$key attr"]))
  36. echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
  37. reset($data["$key attr"]);
  38. }

  39. if(is_null($value)) echo " />n";

  40. elseif(!is_array($value)) echo '>',htmlspecialchars($value),"n";
  41. else echo ">n",XML_serialize($value, $level+1),str_repeat("t", $level),"n";
  42. }
  43. reset($data);
  44. if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
  45. }
  46. #-----------------------#
  47. # XML class: utility class to be used with PHP's XML handling functions
  48. #-----------------------#
  49. class XML{
  50. var $parser; #a reference to the XML parser
  51. var $document; #the entire XML structure built up so far
  52. var $parent; #a pointer to the current parent - the parent will be an array
  53. var $stack; #a stack of the most recent parent at each nesting level
  54. var $last_opened_tag; #keeps track of the last tag opened.

  55. function XML(){

  56. $this->parser = &xml_parser_create();
  57. xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
  58. xml_set_object(&$this->parser, &$this);
  59. xml_set_element_handler(&$this->parser, 'open','close');
  60. xml_set_character_data_handler(&$this->parser, 'data');
  61. }
  62. function destruct(){ xml_parser_free(&$this->parser); }
  63. function & parse(&$data){
  64. $this->document = array();
  65. $this->stack = array();
  66. $this->parent = &$this->document;
  67. return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
  68. }
  69. function open(&$parser, $tag, $attributes){
  70. $this->data = ''; #stores temporary cdata
  71. $this->last_opened_tag = $tag;
  72. if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
  73. if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
  74. #this is the third or later instance of $tag we've come across
  75. $key = count_numeric_items($this->parent[$tag]);
  76. }else{
  77. #this is the second instance of $tag that we've seen. shift around
  78. if(array_key_exists("$tag attr",$this->parent)){
  79. $arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
  80. unset($this->parent["$tag attr"]);
  81. }else{
  82. $arr = array(&$this->parent[$tag]);
  83. }
  84. $this->parent[$tag] = &$arr;
  85. $key = 1;
  86. }
  87. $this->parent = &$this->parent[$tag];
  88. }else{
  89. $key = $tag;
  90. }
  91. if($attributes) $this->parent["$key attr"] = $attributes;
  92. $this->parent = &$this->parent[$key];
  93. $this->stack[] = &$this->parent;
  94. }
  95. function data(&$parser, $data){
  96. if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
  97. $this->data .= $data;
  98. }
  99. function close(&$parser, $tag){
  100. if($this->last_opened_tag == $tag){
  101. $this->parent = $this->data;
  102. $this->last_opened_tag = NULL;
  103. }
  104. array_pop($this->stack);
  105. if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
  106. }
  107. }
  108. function count_numeric_items(&$array){
  109. return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
  110. }
  111. ?>

复制代码

Application example, XML source address: http://data.cnaz.com/spread/?tid=7&sid=42845&order=date&flags=desc&num=50 &page=1&hosts=pic.ttiankan.com&code=xml

  1. include('xml.php'); //Reference PHP XML operation class

  2. $page=$_GET['page '];

  3. if(empty($page) || !is_numeric($page)) $page=1;

  4. //Idol star

  5. $ xml = file_get_contents('http://data.cnaz.com/spread/?tid=7&sid=42845&order=date&flags=desc&num=50
  6. &page='.$page.'&hosts=pic.ttiankan.com&code=xml');

  7. //$xml = file_get_contents("php://input"); //Read the input stream from POST
  8. $data=XML_unserialize($xml);
  9. $item=$data['rss']['channel'];

  10. $link = $item['link'];

  11. $description= $item[ 'description'];
  12. $keywords = $item['keywords'];
  13. $totalnum = $item['totalnum'];
  14. $usetime = $item['usetime'];

  15. echo('

    Keywords:'.$keywords.' ');
  16. echo('Total number of records:'.$totalnum.', 50 records per page, total '.$totalpage.' Page, currently page '.$page.'
');

  • $item=$item['item'];

  • ');

  • echo('

  • ');

  • foreach($item as $list)

  • {
  • echo('
  • ');
  • echo('
  • ');
  • echo('
  • ');
  • echo('
  • ');
  • echo('');
  • }

  • echo('

  • ') ;

  • echo('

  • Category Title Link
    '.$list[ 'sort'].' '.$list['title'].' '.$list['link'].'
  • ');
  • if($page>1) echo(' Previous page ');
  • if($page<$totalpage) echo('< a href="b.php?page='.($page+1).'">Next page');
  • echo('
  • ');
  • ?>

  • Copy code

    The editor of Script School recommends for you: Example code for php operation xml Introduction to how to read and write xml files in php Example of using php function to output XML file Example of php using function method to read XML file Several ways to read XML with PHP PHP code for reading XML values Various methods of php operating xml analysis 4 ways to generate xml files with PHP Detailed explanation of simple example of php generating xml An example of adding data to xml using php Learn php to operate XML class DOMDocument with examples



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