php XML转换为数组的代码

3. // Xml 转 数组, 包括根键，忽略空元素和属性，尚有重大错误

4. function xml_to_array( $xml )
5. {
6. $reg = "/]*?>([\\x00-\\xFF]*?)/";
7. if(preg_match_all($reg, $xml, $matches))
8. {
9. $count = count($matches[0]);
10. $arr = array();
11. for($i = 0; $i {
12. $key = $matches[1][$i];
13. $val = xml_to_array( $matches[2][$i] ); // 递归
14. if(array_key_exists($key, $arr))
15. {
16. if(is_array($arr[$key]))
17. {
18. if(!array_key_exists(0,$arr[$key]))
19. {
20. $arr[$key] = array($arr[$key]);
21. }
22. }else{
23. $arr[$key] = array($arr[$key]);
24. }
25. $arr[$key][] = $val;
26. }else{
27. $arr[$key] = $val;
28. }
29. }
30. return $arr;
31. }else{
32. return $xml;
33. }
34. }

35. // Xml 转 数组, 不包括根键

36. function xmltoarray( $xml )
37. {
38. $arr = xml_to_array($xml);
39. $key = array_keys($arr);
40. return $arr[$key[0]];
41. }

42. // 类似 XPATH 的数组选择器

43. function xml_array_select( $arr, $arrpath )
44. {
45. $arrpath = trim( $arrpath, '/' );
46. if(!$arrpath) return $arr;
47. $self = 'xml_array_select';
49. $pos = strpos( $arrpath, '/' );
50. $pos = $pos ? $pos : strlen($arrpath);
51. $curpath = substr($arrpath, 0, $pos);
52. $next = substr($arrpath, $pos);
54. if(preg_match("/\\[(\\d+)\\]$/",$curpath,$predicate))
55. {
56. $curpath = substr($curpath, 0, strpos($curpath,"[{$predicate[1]}]"));
57. $result = $arr[$curpath][$predicate[1]];
58. }else $result = $arr[$curpath];
60. if( is_array($arr) && !array_key_exists($curpath, $arr) )
61. {
62. die( 'key is not exists:' . $curpath );
63. }
65. return $self($result, $next);
66. }

67. // 如果输入的数组是全数字键，则将元素值依次传输到 $callback, 否则将自身传输给$callback

68. function xml_array_each( $arr, $callback )
69. {
70. if(func_num_args() if(!is_array($arr)) die('parameter 1 shuld be an array!');
71. if(!is_callable($callback)) die('parameter 2 shuld be an function!');
72. $keys = array_keys($arr);
73. $isok = true;
74. foreach( $keys as $key ) {if(!is_int($key)) {$isok = false; break;}}
75. if($isok)
76. foreach( $arr as $val ) $result[] = $callback($val);
77. else
78. $result[] = $callback( $arr );
79. return $result;
80. }
81. ?>

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