一个将xml转数组的php函数

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

42. if(isset($value)) {

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

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

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

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

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

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

96. unset($current[$tag.'_attr']);
97. }

98. if($attributes_data) {

99. $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
100. }
101. }
102. $repeated_tag_index[$tag.'_'.$level]++; //0 and 1 index is already taken
103. }
104. }
105. } elseif($type == 'close') { //End of tag '
'
106. $current = &$parent[$level-1];
107. }
108. }

109. return($xml_array);

110. }
111. ?>

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调用示例：

2. //php之XML转数组函数 调用
3. $arr = xml2array(file_get_contents("tools.xml"),1,'attribute');
4. ?>

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