php XML文件解析类(附演示代码)

3. /** XML 文件分析类

4. * Date: 2013-02-01
5. * Author: fdipzone
6. * Ver: 1.0
7. * Edition bbs.it-home.org
8. * func:
9. * loadXmlFile($xmlfile) 读入xml文件输出Array
10. * loadXmlString($xmlstring) 读入xmlstring 输出Array
11. */
13. class XMLParser{
14. /** 读取xml文件
15. * @param String $xmlfile
16. * @return Array
17. */
18. public function loadXmlFile($xmlfile){
19. // get xmlfile content
20. $xmlstring = file_exists($xmlfile)? file_get_contents($xmlfile) : '';
22. // parser xml
23. list($flag, $data) = $this->parser($xmlstring);
24. return $this->response($flag, $data);
25. }
28. /** 读取xmlstring
29. * @param String $xmlstring
30. * @return Array
31. */
32. public function loadXmlString($xmlstring){
33. // parser xml
34. list($flag, $data) = $this->parser($xmlstring);
36. return $this->response($flag, $data);
37. }
39. /** 解释xml内容
40. * @param String $xmlstring
41. * @return Array
42. */
43. private function parser($xmlstring){
44. $flag = false;
45. $data = array();
47. // check xml format
48. if($this->checkXmlFormat($xmlstring)){
49. $flag = true;
51. // xml to object
52. $data = simpleXML_load_string($xmlstring, 'SimpleXMLElement', LIBXML_NOCDATA);
54. // object to array
55. $this->objectToArray($data);
56. }
57. return array($flag, $data);
58. }
60. /** 检查xml格式是否正确
61. * @param String $xmlstring
62. * @return boolean
63. */
64. private function checkXmlFormat($xmlstring){
65. if($xmlstring==''){
66. return false;
67. }
69. $xml_parser_obj = xml_parser_create();
71. if(xml_parse_into_struct($xml_parser_obj, $xmlstring, $vals, $indexs)===1){ // 1:success 0:fail
72. return true;
73. }else{
74. return false;
75. }
76. }

77. /** object 转 Array

78. * @param object $object
79. * @return Array
80. */
81. private function objectToArray(&$object){
82. $object = (array)$object;
83. foreach($object as $key => $value){
84. if($value==''){
85. $object[$key] = "";
86. }else{
87. if(is_object($value) || is_array($value)){
88. $this->objectToArray($value);
89. $object[$key] = $value;
90. }
91. }
92. }
93. }

94. /** 输出返回

95. * @param boolean $flag true:false
96. * @param Array $data 转换后的数据
97. * @return Array
98. */
99. private function response($flag=false, $data=array()){
100. return array($flag, $data);

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2，演示示例

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附，PHP XML预定义常量: http://bbs.it-home.org/shouce/php5/libxml.constants.html