# XSLT Functions

## Introduction

This PHP extension provides a processor independent API to XSLT transformations. Currently this extension only supports the Sablotron library from the Ginger Alliance. Support is planned for other libraries, such as the Xalan library or the libxslt library.

XSLT (Extensible Stylesheet Language (XSL) Transformations) is a language for transforming XML documents into other XML documents. It is a standard defined by The World Wide Web Consortium (W3C). Information about XSLT and related technologies can be found at » http://www.w3.org/TR/xslt.

> Note: This extension is different than the sablotron extension distributed with versions of PHP prior to PHP 4.1.0, currently only the new XSLT extension in PHP 4.1.0 is supported. If you need support for the old extension, please ask your questions on the PHP mailing lists.

> Note: This extension has been moved to the » PECL repository and is no longer bundled with PHP as of PHP 5.0.0.

> Note: If you need xslt support with PHP 5 you can use the XSL extension.

## Requirements

This extension uses Sablotron and expat, which can both be found at » http://www.gingerall.org/sablotron.html. Binaries are provided as well as source.

## Installation

On Unix, run configure with the --enable-xslt --with-xslt-sablot options. The Sablotron library should be installed somewhere your compiler can find it.

Make sure you have the same libraries linked to the Sablotron library as those, which are linked with PHP. The configuration options: --with-expat-dir=DIR --with-iconv-dir=DIR are there to help you specify them. When asking for support, always mention these directives, and whether there are other versions of those libraries installed on your system somewhere. Naturally, provide all the version numbers.

Caution

Be sure your Sablot library is linked to -lstdc++ as otherwise your configure will fail, or PHP will fail to run or load.

> Note: JavaScript E-XSLT support If you compiled Sablotron with JavaScript support, you must specify the option: --with-sablot-js=DIR.

> Note: Note to Win32 Users In order for this extension to work, there are DLL files that must be available to the Windows system PATH. See the FAQ titled "How do I add my PHP directory to the PATH on Windows" for information on how to do this. Although copying DLL files from the PHP folder into the Windows system directory also works (because the system directory is by default in the systems PATH), it is not recommended. This extension requires the following files to be in the PATH: sablot.dll, expat.dll, and iconv.dll
> For PHP <= 4.2.0, the file iconv.dll is not required.

## Runtime Configuration

This extension has no configuration directives defined in php.ini.

## Resource Types

This extension defines a XSLT processor resource returned by xslt_create().

## 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.

`XSLT_OPT_SILENT` (integer)
  Drop all logging and error reporting. This is a generic option for all backends that may be added in the future.
`XSLT_SABOPT_PARSE_PUBLIC_ENTITIES` (integer)

  Tell Sablotron to parse public entities. By default this has been turned off.

`XSLT_SABOPT_DISABLE_ADDING_META` (integer)

  Do not add the meta tag "Content-Type" for HTML output. The default is set during compilation of Sablotron.

`XSLT_SABOPT_DISABLE_STRIPPING` (integer)
  Suppress the whitespace stripping (on data files only).
`XSLT_SABOPT_IGNORE_DOC_NOT_FOUND` (integer)
  Consider unresolved documents (the document() function) non-lethal.
`XSLT_SABOPT_FILES_TO_HANDLER` (integer)
`XSLT_ERR_UNSUPPORTED_SCHEME` (integer)
  Error return code, for scheme handlers.

## Table of Contents

- xslt_backend_info — Returns the information on the compilation settings of the backend
- xslt_backend_name — Returns the name of the backend
- xslt_backend_version — Returns the version number of Sablotron
- xslt_create — Create a new XSLT processor
- xslt_errno — Returns an error number
- xslt_error — Returns an error string
- xslt_free — Free XSLT processor
- xslt_getopt — Get options on a given xsl processor
- xslt_process — Perform an XSLT transformation
- xslt_set_base — Set the base URI for all XSLT transformations
- xslt_set_encoding — Set the encoding for the parsing of XML documents
- xslt_set_error_handler — Set an error handler for a XSLT processor
- xslt_set_log — Set the log file to write log messages to
- xslt_set_object — Sets the object in which to resolve callback functions
- xslt_set_sax_handler — Set SAX handlers for a XSLT processor
- xslt_set_sax_handlers — Set the SAX handlers to be called when the XML document gets processed
- xslt_set_scheme_handler — Set Scheme handlers for a XSLT processor
- xslt_set_scheme_handlers — Set the scheme handlers for the XSLT processor
- xslt_setopt — Set options on a given xsl processor