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How to correctly use PHP DOM-XML to create XML files, for this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.

We usually use PHP DOM-XML when we create a XML file and parse it. So how can we use it correctly to achieve this function? Let's take a closer look at its application.

Example of application code for PHP DOM-XML:

Add_root ("faq")

$root- > setattr ("page", "32")

/ / Child node

$one = $root- > new_child ("question", "")

/ / set properties for child nodes

$one- > setattr ("number", "1")

/ / question also creates a child node and assigns values to it

$one- > new_child ("text", "1. Where to get libxml-2.0.0?")

$one- > new_child ("answer", "You can download the latest"

Release of libxml either as a source archive or

RPM package from http://www.xmlsoft.org.

The current version is libxml2-2.2.1. ")

$two = $root- > new_child ("question", "")

$two- > setattr ("number", "2")

$two- > new_child ("text", "2.How to configure PHP4?")

/ / create a node that is not directly assigned

$twoone = $two- > new_child ("answer", "")

/ / then assign it a separate value

$twoone- > set_content ("DIR is the libxml install directory"

(if you just use-- with-dom it defaults

To / usr), I needed to use-- with-dom=/usr/local ")

$three = $root- > new_child ("question", "")

$three- > setattr ("number", "7")

Three- > new_child ("text", "7. How to use DOM XML function?")

$three- > new_child ("answer", "Read this document source for"

A simple example. ")

/ / output to Browser

Print ("" .htmlspecialchars ($doc- > dumpmem ()). "")

/ / write to file

/ / write back to the file

$fp = fopen ("test_dom.xml", "w +")

Fwrite ($fp, $doc- > dumpmem (), strlen ($doc- > dumpmem ()

Fclose ($fp)

/ / now use xpath to get the content from the XML document

$doc = xmldoc (join ("", file ("test_dom.xml")

$ctx = xpath_new_context ($doc)

/ / all objects

$foo = xpath_eval ($ctx, "/ / child::*")

Print_r ($foo)

Print ("")

/ / text node object

$foo = xpath_eval ($ctx, "/ / text")

Print_r ($foo)

Print ("")

/ / * text node objects

$foo = xpath_eval ($ctx, "/ / text [1]")

Print_r ($foo)

Print ("")

/ / second text node object

$foo = xpath_eval ($ctx, "/ / text [2]")

Print_r ($foo)

Print ("")

/ / the third answer object

$foo = xpath_eval ($ctx, "/ / answer [3]")

Print_r ($foo)

Print ("")

/ / Type, name and content of the third text node

$foo = xpath_eval ($ctx, "/ / text [3]")

$tmp = $foo- > nodeset

Print_r ($tmp)

Print ("")

Print ($tmp [0]-> type). ";"

Print ($tmp [0]-> name). ";"

Print ($tmp [0]-> content)

? >

It should be noted that PHP DOM-XML can only run on PHPPHP4.0.x + linux.

This is the answer to the question on how to correctly use PHP DOM-XML to create XML files. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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