Can you use php in xml

PHP XML Tutorial: Create, Parse, Read with Example

XML is used to structure, store and transport data from one system to another.

It uses opening and closing tags.

Unlike HTML, XML allows users to define their own tags.

In this tutorial, you will learn-

What is DOM?

DOM is the acronym for Document Object Model.

It’s a cross platform and language neutral standard that defines how to access and manipulate data in;

DOM XML is used to access and manipulate XML documents. It views the XML document as a tree-structure.

XML Parsers

An XML parser is a program that translates the XML document into an XML Document Object Model (DOM) Object.

The XML DOM Object can then be manipulated using JavaScript, Python, and PHP etc.

The keyword CDATA which is the acronym for (Unparsed) Character Data is used to ignore special characters such as “” when parsing an XML document.

Why use XML?

• Web services such as SOAP and REST use XML format to exchange information. Learning what XML is and how it works will get you competitive advantage as a developer since modern applications make heavy use of web services.
• XML documents can be used to store configuration settings of an application
• It allows you to create your own custom tags which make it more flexible.

XML Document example

Let’s suppose that you are developing an application that gets data from a web service in XML format.

Below is the sample of how the XML document looks like.

   Joe Paul CEO  Tasha Smith Finance Manager  

• “” specifies the xml version to be used and encoding
• “” is the root element.
• “…” are the child elements of administration and sales respectively.

How to Read XML using PHP

Let’s now write the code that will read the employees XML document and display the results in a web browser. Index.php

Employees Listing'; $list = $xml->record; for ($i = 0; $i < count($list); $i++) < echo 'Man no: ' . $list[$i]->attributes()->man_no . '
'; echo 'Name: ' . $list[$i]->name . '
'; echo 'Position: ' . $list[$i]->position . '

'; > ?>

• “$xml = simplexml_load_file(’employees.xml’);” uses the simplexml_load_file function to load the file name employees.xml and assign the contents to the array variable $xml.
• “$list = $xml->record;” gets the contents of the record node.
• “for ($i = 0; $i < count(…)…” is the for loop that reads the numeric array and outputs the results
• “$list[$i]->attributes()->man_no;” reads the man_no attribute of the element
• “$list[$i]->name;” reads the value of the name child element
• “$list[$i]->position;” reads the value of the position child element

Testing our application

Assuming you saved the file index.php in phptus/xml folder, browse to the URL http://localhost/phptuts/xml/index.php

How to Create an XML document using PHP

We will now look at how to create an XML document using PHP.

We will use the example above in the DOM tree diagram.

The following code uses the PHP built in class DOMDocument to create an XML document.

encoding = 'utf-8'; $dom->xmlVersion = '1.0'; $dom->formatOutput = true; $xml_file_name = 'movies_list.xml'; $root = $dom->createElement('Movies'); $movie_node = $dom->createElement('movie'); $attr_movie_id = new DOMAttr('movie_id', '5467'); $movie_node->setAttributeNode($attr_movie_id); $child_node_title = $dom->createElement('Title', 'The Campaign'); $movie_node->appendChild($child_node_title); $child_node_year = $dom->createElement('Year', 2012); $movie_node->appendChild($child_node_year); $child_node_genre = $dom->createElement('Genre', 'The Campaign'); $movie_node->appendChild($child_node_genre); $child_node_ratings = $dom->createElement('Ratings', 6.2); $movie_node->appendChild($child_node_ratings); $root->appendChild($movie_node); $dom->appendChild($root); $dom->save($xml_file_name); echo "$xml_file_name has been successfully created"; ?>

Testing our application

Assuming you saved the file create_movies_list in phptuts/xml folder, browse to the URL http://localhost/phptuts/xml/create_movies_list.php

Click on movies_list_xml link

Summary

• XML is the acronym for Extensible Markup Language
• XML can be used for exchanging information between systems or store configuration settings of an application etc.
• DOM is the acronym for Document Object Model. XML DOM views the XML document as a tree-structure
• An XML Parser is a program that translates XML an XML document into a DOM tree-structure like document.
• CDATA is used to ignore special characters when parsing XML documents.
• PHP uses the simplexml_load_file to read XML documents and return the results as a numeric array
• PHP DOMDocument class to create XML files.

Источник

Including PHP in XML

Above you can see that I am trying just to echo test just to get it working. anything after the nothing shows up including the echo this file is called by a flash file (i included this info in-case its important) thanks in advance

Are you generating the xml file in PHP and then displaying it in a browser or are you trying to display an xml file with the PHP tags in it as above?

It sounds like the web server doesn’t recognise your file as a PHP file and therefore PHP ain’t running. Your filename probably ends in .xml instead of .php

You could try setting your apache ( I presume ) server to process xml files as php though I think you’d be better using PHP to actually generate the xml file

4 Answers 4

I’d suggest using PHP to generate the XML as you go, the output of the call to DOMDocument can be either saved as a file or output as a string. In the exmple below it is simply returned as a string. The example tests for a GET parameter called uname — change that to whatever you want

createElement('config'); $root->appendChild( $dom->createElement('enable_music','true') ); $root->appendChild( $dom->createElement('music_path','music.mp3') ); $root->appendChild( $dom->createElement('mute_button_visible','true') ); $text=$dom->createElement('text_block'); $cdata=$dom->createCDATASection(' 



Dear '.$uname.'! 
We wish you warm Christmas
and Happy New Year! 
Be happy and keep smiling!

www.yourdomain.com
'); $text->appendChild( $cdata ); $root->appendChild( $text ); $dom->appendChild( $root ); echo ''.$dom->saveXML().''; $dom=null; > ?> 

function processing_instruction($inParser, $inTarget, $inCode) < if ($inTarget === 'php') < eval($inCode); >>