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# xslt_set_sax_handlers

(PHP 4 >= 4.0.6, PECL)

xslt_set_sax_handlers -- Set the SAX handlers to be called when the XML document gets processed

## Description

void xslt_set_sax_handlers ( resource processor, array handlers )

xslt_set_sax_handlers() registers the SAX handlers for the document, given a XSLT processor resource.

handlers should be an array in the following format:

`<?php $handlers = array( "document" => array( "start_doc", "end_doc"), "element" => array( "start_element", "end_element"), "namespace" => array( "start_namespace", "end_namespace"), "comment" => "comment", "pi" => "pi", "character" => "characters" ); ?>`

Where the functions follow the syntax described for the scheme handler functions.

> Note: The given array does not need to contain all of the different sax handler elements (although it can), but it only needs to conform to "handler" => "function" format described above.

Each of the individual SAX handler functions are in the format below:

- start_doc ( resource processor )

- end_doc ( resource processor )

- start_element ( resource processor, string name, array attributes )

- end_element ( resource processor, string name )

- start_namespace ( resource processor, string prefix, string uri )

- end_namespace ( resource processor, string prefix )

- comment ( resource processor, string contents )

- pi ( resource processor, string target, string contents )

- characters ( resource processor, string contents )

Using xslt_set_sax_handlers() doesn't look very different than running a SAX parser like xml_parse() on the result of an xslt_process() transformation.

## Examples

Example 1. xslt_set_sax_handlers() Example
`<?php // From ohlesbeauxjours at yahoo dot fr // Here's a simple example that applies strtoupper() on // the content of every <auteur> tag and then displays the // resulting XML tree: $xml='<?xml version="1.0"?> <books> <book> <title>Mme Bovary</title> <author>Gustave Flaubert</author> </book> <book> <title>Mrs Dalloway</title> <author>Virginia Woolf</author> </book> </books>'; $xsl='<?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="html" encoding="ISO-8859-1" indent="no" omit-xml-declaration="yes"/> <xsl:template match="/"> <xsl:for-each select="books/book"> <livre> <auteur><xsl:value-of select="author/text()"/></auteur> </livre> </xsl:for-each> </xsl:template> </xsl:stylesheet>'; // Handlers : function start_document() { // start reading the document } function end_document() { // end reading the document } function start_element($parser, $name, $attributes) { global $result,$tag; $result .= "<". $name . ">"; $tag = $name; } function end_element($parser, $name) { global $result; $result .= "</" . $name . ">"; } function characters($parser, $data) { global $result,$tag; if ($tag == "auteur" ) { $data = strtoupper($data); } $result .= $data; } // Transformation : $xh = xslt_create(); $handlers = array("document" => array("start_document","end_document"), "element" => array("start_element","end_element"), "character" => "characters"); xslt_set_sax_handlers($xh, $handlers); xslt_process($xh, 'arg:/_xml', 'arg:/_xsl', NULL, array("/_xml"=>$xml, "/_xsl"=>$xsl)); xslt_free($xh); ?>`

You can also use xslt_set_object() if you want to implement your handlers in an object.

Example 2. Object oriented handler
`<?php // This is the object oriented version of the previous example class data_sax_handler { var $buffer, $tag, $attrs; var $_xh; function data_sax_handler($xml, $xsl) { // our xslt resource $this->_xh = xslt_create(); xslt_set_object($this->_xs, $this); // configure sax handlers $handlers = array( "document" => array('start_document', 'end_document'), "element" => array('start_element', 'end_element'), "character" => 'characters' ); xslt_set_sax_handlers($this->_xh, $handlers); xslt_process($this->_xh, 'arg:/_xml', 'arg:/_xsl', NULL, array("/_xml"=>$xml, "/_xsl"=>$xsl)); xslt_free($this->_xh); } function start_document() { // start reading the document } function end_document() { // complete reading the document } function start_element($parser, $name, $attributes) { $this->tag = $name; $this->buffer .= "<" . $name . ">"; $this->attrs = $attributes; } function end_element($parser, $name) { $this->tag = ''; $this->buffer .= "</" . $name . ">"; } function characters($parser, $data) { if ($this->tag == 'auteur') { $data = strtoupper($data); } $this->buffer .= $data; } function get_buffer() { return $this->buffer; } } $exec = new data_sax_handler($xml, $xsl); ?>`
Both examples will output:
    <livre>
       <auteur>GUSTAVE FLAUBERT</auteur>
    </livre>
    <livre>
       <auteur>VIRGINIA WOOLF</auteur>
    </livre>

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