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PHP XML Library:一个不错的PHP XML操作类
今天在PHP4环境下重新写一个接口程序,需要大量分析解析XML,PHP的xml_parse_into_struct()函数不能直接生成便于使用的数组,而SimpleXML扩展在PHP5中才支持,于是逛逛搜索引擎,在老外的网站上找到了一个不错的PHP XML操作类。
一、用法举例:
1、将XML文件解释成便于使用的数组:
view plaincopy to clipboardprint?- 1.<?php
- 2.include('xml.php'); //引用PHP XML操作类
- 3.$xml = file_get_contents('data.xml'); //读取XML文件
- 4.//$xml = file_get_contents("php://input"); //读取POST过来的输入流
- 5.$data=XML_unserialize($xml);
- 6.echo '<pre>';
- 7.print_r($data);
- 8.echo '</pre>';
- 9.?>
复制代码 Php代码- 1.<?php
- 2.include('xml.php'); //引用PHP XML操作类
- 3.$xml = file_get_contents('data.xml'); //读取XML文件
- 4.//$xml = file_get_contents("php://input"); //读取POST过来的输入流
- 5.$data=XML_unserialize($xml);
- 6.echo '<pre>';
- 7.print_r($data);
- 8.echo '</pre>';
- 9.?>
- <?php
- include('xml.php'); //引用PHP XML操作类
- $xml = file_get_contents('data.xml'); //读取XML文件
- //$xml = file_get_contents("php://input"); //读取POST过来的输入流
- $data=XML_unserialize($xml);
- echo '<pre>';
- print_r($data);
- echo '</pre>';
- ?>
复制代码 data.xml文件:- view plaincopy to clipboardprint?
- 1.<?xml version="1.0" encoding="GBK"?>
- 2.<video>
- 3.<upload>
- 4.<videoid>998</videoid>
- 5.<name><![CDATA[回忆未来]]></name>
- 6.<memo><![CDATA[def]]></memo>
- 7.<up_userid>11317</up_userid>
- 8.</upload>
- 9.</video>
- Xml代码
- 1.<?xml version="1.0" encoding="GBK"?>
- 2.<video>
- 3.<upload>
- 4.<videoid>998</videoid>
- 5.<name><![CDATA[回忆未来]]></name>
- 6.<memo><![CDATA[def]]></memo>
- 7.<up_userid>11317</up_userid>
- 8.</upload>
- 9.</video>
- <?xml version="1.0" encoding="GBK"?>
- <video>
- <upload>
- <videoid>998</videoid>
- <name><![CDATA[回忆未来]]></name>
- <memo><![CDATA[def]]></memo>
- <up_userid>11317</up_userid>
- </upload>
- </video>
复制代码 利用该XML操作类生成的对应数组(汉字编码:UTF-8):
- view plaincopy to clipboardprint?
- 1.Array
- 2.(
- 3. [video] => Array
- 4. (
- 5. [upload] => Array
- 6. (
- 7. [videoid] => 998
- 8. [name] => 回忆未来
- 9. [memo] => def
- 10. [up_userid] => 11317
- 11. )
- 12.
- 13. )
- 14.
- 15.)
复制代码 Html代码- 1.Array
- 2.(
- 3. [video] => Array
- 4. (
- 5. [upload] => Array
- 6. (
- 7. [videoid] => 998
- 8. [name] => 回忆未来
- 9. [memo] => def
- 10. [up_userid] => 11317
- 11. )
- 12.
- 13. )
- 14.
- 15.)
- Array
- (
- [video] => Array
- (
- [upload] => Array
- (
- [videoid] => 998
- [name] => 回忆未来
- [memo] => def
- [up_userid] => 11317
- )
- )
- )
复制代码 2、将数组转换成XML文件:- view plaincopy to clipboardprint?
- 1.<?php
- 2.include('xml.php');//引用PHP XML操作类
- 3.$xml = XML_serialize($data);
- 4.?>
复制代码 Php代码- 1.<?php
- 2.include('xml.php');//引用PHP XML操作类
- 3.$xml = XML_serialize($data);
- 4.?>
- <?php
- include('xml.php');//引用PHP XML操作类
- $xml = XML_serialize($data);
- ?>
复制代码 二、PHP XML操作类源代码:
view plaincopy to clipboardprint?- 1.<?php
- 2.###################################################################################
- 3.#
- 4.# XML Library, by Keith Devens, version 1.2b
- 5.# <a href="http://keithdevens.com/software/phpxml" target="_blank">http://keithdevens.com/software/phpxml</a>
- 6.#
- 7.# This code is Open Source, released under terms similar to the Artistic License.
- 8.# Read the license at <a href="http://keithdevens.com/software/license" target="_blank">http://keithdevens.com/software/license</a>
- 9.#
- 10.###################################################################################
- 11.
- 12.###################################################################################
- 13.# XML_unserialize: takes raw XML as a parameter (a string)
- 14.# and returns an equivalent PHP data structure
- 15.###################################################################################
- 16.function & XML_unserialize(&$xml){
- 17. $xml_parser = &new XML();
- 18. $data = &$xml_parser->parse($xml);
- 19. $xml_parser->destruct();
- 20. return $data;
- 21.}
- 22.###################################################################################
- 23.# XML_serialize: serializes any PHP data structure into XML
- 24.# Takes one parameter: the data to serialize. Must be an array.
- 25.###################################################################################
- 26.function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
- 27. if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
- 28. while(list($key, $value) = each($data))
- 29. if(!strpos($key, ' attr')) #if it's not an attribute
- 30. #we don't treat attributes by themselves, so for an emptyempty element
- 31. # that has attributes you still need to set the element to NULL
- 32.
- 33. if(is_array($value) and array_key_exists(0, $value)){
- 34. XML_serialize($value, $level, $key);
- 35. }else{
- 36. $tag = $prior_key ? $prior_key : $key;
- 37. echo str_repeat("\t", $level),'<',$tag;
- 38. if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
- 39. while(list($attr_name, $attr_value) = each($data["$key attr"]))
- 40. echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
- 41. reset($data["$key attr"]);
- 42. }
- 43.
- 44. if(is_null($value)) echo " />\n";
- 45. elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
- 46. else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
- 47. }
- 48. reset($data);
- 49. if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
- 50.}
- 51.###################################################################################
- 52.# XML class: utility class to be used with PHP's XML handling functions
- 53.###################################################################################
- 54.class XML{
- 55. var $parser; #a reference to the XML parser
- 56. var $document; #the entire XML structure built up so far
- 57. var $parent; #a pointer to the current parent - the parent will be an array
- 58. var $stack; #a stack of the most recent parent at each nesting level
- 59. var $last_opened_tag; #keeps track of the last tag opened.
- 60.
- 61. function XML(){
- 62. $this->parser = &xml_parser_create();
- 63. xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
- 64. xml_set_object(&$this->parser, &$this);
- 65. xml_set_element_handler(&$this->parser, 'open','close');
- 66. xml_set_character_data_handler(&$this->parser, 'data');
- 67. }
- 68. function destruct(){ xml_parser_free(&$this->parser); }
- 69. function & parse(&$data){
- 70. $this->document = array();
- 71. $this->stack = array();
- 72. $this->parent = &$this->document;
- 73. return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
- 74. }
- 75. function open(&$parser, $tag, $attributes){
- 76. $this->data = ''; #stores temporary cdata
- 77. $this->last_opened_tag = $tag;
- 78. if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
- 79. if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
- 80. #this is the third or later instance of $tag we've come across
- 81. $key = count_numeric_items($this->parent[$tag]);
- 82. }else{
- 83. #this is the second instance of $tag that we've seen. shift around
- 84. if(array_key_exists("$tag attr",$this->parent)){
- 85. $arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
- 86. unset($this->parent["$tag attr"]);
- 87. }else{
- 88. $arr = array(&$this->parent[$tag]);
- 89. }
- 90. $this->parent[$tag] = &$arr;
- 91. $key = 1;
- 92. }
- 93. $this->parent = &$this->parent[$tag];
- 94. }else{
- 95. $key = $tag;
- 96. }
- 97. if($attributes) $this->parent["$key attr"] = $attributes;
- 98. $this->parent = &$this->parent[$key];
- 99. $this->stack[] = &$this->parent;
- 100. }
- 101. function data(&$parser, $data){
- 102. if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
- 103. $this->data .= $data;
- 104. }
- 105. function close(&$parser, $tag){
- 106. if($this->last_opened_tag == $tag){
- 107. $this->parent = $this->data;
- 108. $this->last_opened_tag = NULL;
- 109. }
- 110. array_pop($this->stack);
- 111. if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
- 112. }
- 113.}
- 114.function count_numeric_items(&$array){
- 115. return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
- 116.}
- 117.?>
复制代码 Php代码
[code]1.<?php
2.###################################################################################
3.#
4.# XML Library, by Keith Devens, version 1.2b
5.# <a href="http://keithdevens.com/software/phpxml" target="_blank">http://keithdevens.com/software/phpxml</a>
6.#
7.# This code is Open Source, released under terms similar to the Artistic License.
8.# Read the license at <a href="http://keithdevens.com/software/license" target="_blank">http://keithdevens.com/software/license</a>
9.#
10.###################################################################################
11.
12.###################################################################################
13.# XML_unserialize: takes raw XML as a parameter (a string)
14.# and returns an equivalent PHP data structure
15.###################################################################################
16.function & XML_unserialize(&$xml){
17. $xml_parser = &new XML();
18. $data = &$xml_parser->parse($xml);
19. $xml_parser->destruct();
20. return $data;
21.}
22.###################################################################################
23.# XML_serialize: serializes any PHP data structure into XML
24.# Takes one parameter: the data to serialize. Must be an array.
25.###################################################################################
26.function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
27. if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
28. while(list($key, $value) = each($data))
29. if(!strpos($key, ' attr')) #if it's not an attribute
30. #we don't treat attributes by themselves, so for an emptyempty element
31. # that has attributes you still need to set the element to NULL
32.
33. if(is_array($value) and array_key_exists(0, $value)){
34. XML_serialize($value, $level, $key);
35. }else{
36. $tag = $prior_key ? $prior_key : $key;
37. echo str_repeat("\t", $level),'<',$tag;
38. if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
39. while(list($attr_name, $attr_value) = each($data["$key attr"]))
40. echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
41. reset($data["$key attr"]);
42. }
43.
44. if(is_null($value)) echo " />\n";
45. elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
46. else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
47. }
48. reset($data);
49. if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
50.}
51.###################################################################################
52.# XML class: utility class to be used with PHP's XML handling functions
53.###################################################################################
54.class XML{
55. var $parser; #a reference to the XML parser
56. var $document; #the entire XML structure built up so far
57. var $parent; #a pointer to the current parent - the parent will be an array
58. var $stack; #a stack of the most recent parent at each nesting level
59. var $last_opened_tag; #keeps track of the last tag opened.
60.
61. function XML(){
62. $this->parser = &xml_parser_create();
63. xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
64. xml_set_object(&$this->parser, &$this);
65. xml_set_element_handler(&$this->parser, 'open','close');
66. xml_set_character_data_handler(&$this->parser, 'data');
67. }
68. function destruct(){ xml_parser_free(&$this->parser); }
69. function & parse(&$data){
70. $this->document = array();
71. $this->stack = array();
72. $this->parent = &$this->document;
73. return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
74. }
75. function open(&$parser, $tag, $attributes){
76. $this->data = ''; #stores temporary cdata
77. $this->last_opened_tag = $tag;
78. if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
79. if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
80. #this is the third or later instance of $tag we've come across
81. $key = count_numeric_items($this->parent[$tag]);
82. }else{
83. #this is the second instance of $tag that we've seen. shift around
84. if(array_key_exists("$tag attr",$this->parent)){
85. $arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
86. unset($this->parent["$tag attr"]);
87. }else{
88. $arr = array(&$this->parent[$tag]);
89. }
90. $this->parent[$tag] = &$arr;
91. $key = 1;
92. }
93. $this->parent = &$this->parent[$tag];
94. }else{
95. $key = $tag;
96. }
97. if($attributes) $this->parent["$key attr"] = $attributes;
98. $this->parent = &$this->parent[$key];
99. $this->stack[] = &$this->parent;
100. }
101. function data(&$parser, $data){
102. if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
103. $this->data .= $data;
104. }
105. function close(&$parser, $tag){
106. if($this->last_opened_tag == $tag){
107. $this->parent = $this->data;
108. $this->last_opened_tag = NULL;
109. }
110. array_pop($this->stack);
111. if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
112. }
113.}
114.function count_numeric_items(&$array){
115. return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
116.}
117.?>
<?php
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