Feeds

Harness XML with PHP 5 extensions

A time to query

Intelligent flash storage arrays

Create a PHP script, validateXML.php. Create a DOMDocument object and load the XML document. Validate the XML document with the XML schema using schemaValidate().

$isValid=$domDocument->schemaValidate("file://C:/PHP/catalog.xsd");

The output from the PHP script is as follows.

XML Document is valid

Query XML with SimpleXML

PHP 5 provides the SimpleXML extension to select XML document nodes and node values with property selectors and array iterators. To select nodes and output node values in the XML document using the SimpleXML extension create a PHP script, simpleXML.php. The SimpleXML extension provides functions simplexml_load_file(string filename) and simplexml_load_string(string xmlDocument) to load an XML document from a file or a string.

$simplexml=simplexml_load_file("file://C:/PHP/catalog.xml");

The simplexml_load_file() converts the XML document to an object of type SimpleXMLElement, and returns the root element in the XML document. As an example, output the value of the title element of the article in the first journal element.

print $simplexml->journal->article->title;

As the $simplexml object represents the root element in the XML document parsed, the value of the title attribute in the root element, catalog, is obtained as shown below.

print   $simplexml['title'];

The attributes of an element may be output using attributes(). For example, obtain the attributes in the root element.

$attributes=$simplexml->attributes();

Output the publisher attribute.

print $attributes['publisher'];

The output is shown below.

The Java XPath API
XML Zone
IBM developerWorks

Top 5 reasons to deploy VMware with Tegile

Next page: Transform XML

More from The Register

next story
Preview redux: Microsoft ships new Windows 10 build with 7,000 changes
Latest bleeding-edge bits borrow Action Center from Windows Phone
Google opens Inbox – email for people too thick to handle email
Print this article out and give it to someone tech-y if you get stuck
Microsoft promises Windows 10 will mean two-factor auth for all
Sneak peek at security features Redmond's baking into new OS
UNIX greybeards threaten Debian fork over systemd plan
'Veteran Unix Admins' fear desktop emphasis is betraying open source
Entity Framework goes 'code first' as Microsoft pulls visual design tool
Visual Studio database diagramming's out the window
Google+ goes TITSUP. But WHO knew? How long? Anyone ... Hello ...
Wobbly Gmail, Contacts, Calendar on the other hand ...
DEATH by PowerPoint: Microsoft warns of 0-day attack hidden in slides
Might put out patch in update, might chuck it out sooner
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.