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Using PHP and XML with Apache Cocoon
Stage 1) Static XML
How to write XML is outside of the scope of this article, but here is a simple XML page called phpbuilder.xml so you can see how it is laid out.
Initially we have our "Prolog" including a declaration that tells Cocoon that we want to do an XSLT transformation:
<?xml version="1.0"?> <?xml-stylesheet href="phpbuilder.xsl" type="text/xsl"?> <?cocoon-process type="xslt"?>
Now we write out our body elements that contain a message that you've seen once or twice before:
My browser (almost certainly) wants HTML, so I use an XSL page to make sense out of the XML:
<?xml version="1.0"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:template match="phpbuilder"> <xsl:processing-instruction name="cocoon-format">type="text/html" <html> <head> <title>XML/XSL/Cocoon Transformation</title> </head> <body> <p> <h1><div align="center"> <xsl:value-of select="heading" /> </div></h1> </p> <p> <xsl:value-of select="message" /> </p> </body> </html> </xsl:template> </xsl:stylesheet>
Notice that the HTML is embedded in the Stylesheet with references to my "heading"
and my message
Also notice that all of my HTML tags have their end equivalents, e.g. </p>.
You cannot get away without closing a particular tag with XML as it does not conform, if you had a
tag such as <br>, it would be written <br/> which indicates that it is an empty tag.
By saving the above example out as phpbuilder.xsl and navigating to my phpbuilder.xml file on a server with Cocoon installed, I would get the resulting HTML:
This is an XML/XSL Transformation – Stage 1
Hello World
'); ?>
