一个将xml转数组的php函数

3. /**

4. * xml2array() will convert the given XML text to an array in the XML structure.
5. * Arguments : $contents - The XML text
6. * $get_attributes - 1 or 0. If this is 1 the function will get the attributes as well as the tag values - this results in a different array structure in the return value.
7. * $priority - Can be 'tag' or 'attribute'. This will change the way the resulting array sturcture. For 'tag', the tags are given more importance.
8. * Return: The parsed XML in an array form. Use print_r() to see the resulting array structure.
9. * Examples: $array = xml2array(file_get_contents('feed.xml'));
10. * $array = xml2array(file_get_contents('feed.xml', 1, 'attribute'));
11. */
12. function xml2array($contents, $get_attributes=1, $priority = 'tag') {
13. if(!$contents) return array();
14. if(!function_exists('xml_parser_create')) {
15. //print "'xml_parser_create()' function not found!";
16. return array();
17. }
18. //Get the XML parser of PHP - PHP must have this module for the parser to work
19. $parser = xml_parser_create('');
20. xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8");
21. xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
22. xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
23. xml_parse_into_struct($parser, trim($contents), $xml_values);
24. xml_parser_free($parser);
25. if(!$xml_values) return;//Hmm...
26. //Initializations bbs.it-home.org
27. $xml_array = array();
28. $parents = array();
29. $opened_tags = array();
30. $arr = array();
31. $current = &$xml_array; //Refference
32. //Go through the tags.
33. $repeated_tag_index = array();//Multiple tags with same name will be turned into an array
34. foreach($xml_values as $data) {
35. unset($attributes,$value);//Remove existing values, or there will be trouble
36. //This command will extract these variables into the foreach scope
37. // tag(string), type(string), level(int), attributes(array).
38. extract($data);//We could use the array by itself, but this cooler.
39. $result = array();
40. $attributes_data = array();

41. if(isset($value)) {

42. if($priority == 'tag') $result = $value;
43. else $result['value'] = $value; //Put the value in a assoc array if we are in the 'Attribute' mode
44. }
45. //Set the attributes too.
46. if(isset($attributes) and $get_attributes) {
47. foreach($attributes as $attr => $val) {
48. if($priority == 'tag') $attributes_data[$attr] = $val;
49. else $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
50. }
51. }
52. //See tag status and do the needed.
53. if($type == "open") {//The starting of the tag ' '
54. $parent[$level-1] = &$current;
55. if(!is_array($current) or (!in_array($tag, array_keys($current)))) { //Insert New tag
56. $current[$tag] = $result;
57. if($attributes_data) $current[$tag. '_attr'] = $attributes_data;
58. $repeated_tag_index[$tag.'_'.$level] = 1;
59. $current = &$current[$tag];
60. } else { //There was another element with the same tag name
61. if(isset($current[$tag][0])) {//If there is a 0th element it is already an array
62. $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
63. $repeated_tag_index[$tag.'_'.$level]++;
64. } else {//This section will make the value an array if multiple tags with the same name appear together
65. $current[$tag] = array($current[$tag],$result);//This will combine the existing item and the new item together to make an array
66. $repeated_tag_index[$tag.'_'.$level] = 2;

67. if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well

68. $current[$tag]['0_attr'] = $current[$tag.'_attr'];
69. unset($current[$tag.'_attr']);
70. }
71. }
72. $last_item_index = $repeated_tag_index[$tag.'_'.$level]-1;
73. $current = &$current[$tag][$last_item_index];
74. }
75. } elseif($type == "complete") { //Tags that ends in 1 line ' '
76. //See if the key is already taken.
77. if(!isset($current[$tag])) { //New Key
78. $current[$tag] = $result;
79. $repeated_tag_index[$tag.'_'.$level] = 1;
80. if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data;
81. } else { //If taken, put all things inside a list(array)
82. if(isset($current[$tag][0]) and is_array($current[$tag])) {//If it is already an array...
83. // ...push the new element into that array.
84. $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;

85. if($priority == 'tag' and $get_attributes and $attributes_data) {

86. $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
87. }
88. $repeated_tag_index[$tag.'_'.$level]++;
89. } else { //If it is not an array...
90. $current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
91. $repeated_tag_index[$tag.'_'.$level] = 1;
92. if($priority == 'tag' and $get_attributes) {
93. if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well

94. $current[$tag]['0_attr'] = $current[$tag.'_attr'];

95. unset($current[$tag.'_attr']);
96. }

97. if($attributes_data) {

98. $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
99. }
100. }
101. $repeated_tag_index[$tag.'_'.$level]++; //0 and 1 index is already taken
102. }
103. }
104. } elseif($type == 'close') { //End of tag ''
105. $current = &$parent[$level-1];
106. }
107. }

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