How to correctly create XML files using the PHP DOM-XML

When creating an XML file and parsing it, we usually use

Application code example for PHP DOM-XML:

1. <? Php
2. /**
3. * Topic: Create and parse XML files using PHP DOM-XML
4. * Source: http://www.php.net/domxml
5. * Reference: http://www.zugeschaut-und-mitgebaut.de/php/extension.domxml.html
6. * Author: urs@circle.ch, 16-1-2001
7. *
8. */
9. // Use the PHP DOM-XML to create and parse XML files
10. // Create an XML document object. Subsequent processing will be performed on this basis.
11. $ Doc = new_xmldoc ("1.0 ");
12. // Create a root node and set an attribute
13. $ Root = $ doc->Add_root ("faq ");
14. $ Root->Setattr ("page", "32 ");
15. // Subnode
16. $ One = $ root->New_child ("question ","");
17. // Set attributes for the subnode
18. $ One->Setattr ("number", "1 ");
19. // Question also creates a subnode and assigns a value to it
20. $ One->New_child ("text", "1. Where to get libxml-2.0.0? ");
21. $ One->New_child ("answer", "You can download the latest
22. Release of libxml either as a source archive or
23. RPM package from http://www.xmlsoft.org.
24. The current version is libxml2-2.2.1 .");
25. $ Two = $ root->New_child ("question ","");
26. $ Two->Setattr ("number", "2 ");
27. $ Two->New_child ("text", "2. How to configure PHP4? ");
28. // Create a node with no direct value assignment
29. $ Twoone = $ two->New_child ("answer ","");
30. // Assign a value to it separately
31. $ Twoone->Set_content ("DIR is the libxml install directory
32. (If you just use -- with-dom it ults
33. To/usr), I needed to use -- with-dom =/usr/local ");
34. $ Three = $ root->New_child ("question ","");
35. $ Three->Setattr ("number", "7 ");
36. $ Three->New_child ("text", "7. How to use dom xml function? ");
37. $ Three->New_child ("answer", "Read this document source
38. A simple example .");
39. // Output to Browser
40. Print ("< Pre>". Htmlspecialchars ($ doc->Dumpmem ())."</Pre>");
41. // Write to file
42. // Write back to file
43. $ Fp = fopen ("test_dom.xml", "w + ");
44. Fwrite ($ fp, $ doc->Dumpmem (), strlen ($ doc->Dumpmem ()));
45. Fclose ($ fp );
46. // Now use xpath to get content from the XML document
47. $ Doc = xmldoc (join ("", file ("test_dom.xml ")));
48. $ Ctx = xpath_new_context ($ doc );
49. // All objects
50. $ Foo = xpath_eval ($ ctx, "// child ::*");
51. Print_r ($ foo );
52. Print ("< Br/> < Br/>");
53. // Text node object
54. $ Foo = xpath_eval ($ ctx, "// text ");
55. Print_r ($ foo );
56. Print ("< Br/> < Br/>");
57. // The first text node object
58. $ Foo = xpath_eval ($ ctx, "// text [1]");
59. Print_r ($ foo );
60. Print ("< Br/> < Br/>");
61. // The second text node object
62. $ Foo = xpath_eval ($ ctx, "// text [2]");
63. Print_r ($ foo );
64. Print ("< Br/> < Br/>");
65. // The third answer object
66. $ Foo = xpath_eval ($ ctx, "// answer [3]");
67. Print_r ($ foo );
68. Print ("< Br/> < Br/>");
69. // Type, name, and content of the third text node
70. $ Foo = xpath_eval ($ ctx, "// text [3]");
71. $ Tmp = $ foo->Nodeset;
72. Print_r ($ tmp );
73. Print ("< Br/>");
74. Print ($ tmp [0]->Type ).";";
75. Print ($ tmp [0]->Name ).";";
76. Print ($ tmp [0]->Content );
77. ?> 

Note that the PHP DOM-XML can only run on PHPPHP4.0.x + linux