Note: This manual is provided for your convenience only - this is not the official source and may not be 100% up to date.

XSL functions

CLXXXIII. XSL functions


The XSL extension implements the XSL standard, performing XSLT transformations using the libxslt library


This extension uses libxslt which can be found at libxslt version 1.1.0 or greater is required.


PHP 5 includes the XSL extension by default and can be enabled by adding the argument --with-xsl[=DIR] to your configure line. DIR is the libxslt installation directory.

Predefined Classes





Many examples in this reference require both an XML and an XSL file. We will use collection.xml and collection.xsl that contains the following:

Example 1. collection.xml

  <title>Fight for your mind</title>
  <artist>Ben Harper</artist>
  <title>Electric Ladyland</title>
  <artist>Jimi Hendrix</artist>

Example 2. collection.xsl

<xsl:stylesheet version="1.0" xmlns:xsl="">
 <xsl:param name="owner" select="'Nicolas Eliaszewicz'"/>
 <xsl:output method="html" encoding="iso-8859-1" indent="no"/>
 <xsl:template match="collection">
  Hey! Welcome to <xsl:value-of select="$owner"/>'s sweet CD collection! 
 <xsl:template match="cd">
  <h1><xsl:value-of select="title"/></h1>
  <h2>by <xsl:value-of select="artist"/> - <xsl:value-of select="year"/></h2>
  <hr />

Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

XSL_CLONE_AUTO (integer)




libxslt version like 10117. Available as of PHP 5.1.2.


libxslt version like 1.1.17. Available as of PHP 5.1.2.


libexslt version like 813. Available as of PHP 5.1.2.


libexslt version like 1.1.17. Available as of PHP 5.1.2.

Table of Contents
XSLTProcessor::__construct -- Creates a new XSLTProcessor object
XSLTProcessor::getParameter -- Get value of a parameter
XSLTProcessor::hasExsltSupport -- Determine if PHP has EXSLT support
XSLTProcessor::importStylesheet -- Import stylesheet
XSLTProcessor::registerPHPFunctions -- Enables the ability to use PHP functions as XSLT functions
XSLTProcessor::removeParameter -- Remove parameter
XSLTProcessor::setParameter -- Set value for a parameter
XSLTProcessor::transformToDoc -- Transform to a DOMDocument
XSLTProcessor::transformToURI -- Transform to URI
XSLTProcessor::transformToXML -- Transform to XML