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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/xslt.xml, last change in rev 1.1 -->
<refentry id="function.xslt-set-error-handler">
<refnamediv>
<refname>xslt_set_error_handler</refname>
<refpurpose>Set an error handler for a XSLT processor</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>void</type><methodname>xslt_set_error_handler</methodname>
<methodparam><type>resource</type><parameter>xh</parameter></methodparam>
<methodparam><type>mixed</type><parameter>handler</parameter></methodparam>
</methodsynopsis>
<para>
Set an error handler function for the XSLT processor given by
<parameter>xh</parameter>, this function will be called whenever an
error occurs in the XSLT transformation (this function is also called
for notices).
</para>
<para>
The user function needs to accept four parameters: the XSLT processor,
the error level, the error code and an array of messages. The function
can be shown as:
<methodsynopsis>
<methodname><replaceable>error_handler</replaceable></methodname>
<methodparam><type>resource</type><parameter>xh</parameter></methodparam>
<methodparam><type>int</type><parameter>error_level</parameter></methodparam>
<methodparam><type>int</type><parameter>error_code</parameter></methodparam>
<methodparam><type>array</type><parameter>messages</parameter></methodparam>
</methodsynopsis>
</para>
</refsect1>
<refsect1>
&reftitle.examples;
<example>
<title><function>xslt_set_error_handler</function> Example</title>
<programlisting role="php">
<![CDATA[
<?php
// Our XSLT error handler
function xslt_error_handler($handler, $errno, $level, $info)
{
// for now, let's just see the arguments
var_dump(func_get_args());
}
// XML content :
$xml='<?xml version="1.0"?>
<para>
oops, I misspelled the closing tag
</pata>';
// XSL content :
$xsl='<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<strong><xsl:value-of select="para"/></strong>
</xsl:template>
</xsl:stylesheet>';
$xh = xslt_create();
xslt_set_error_handler($xh, "xslt_error_handler");
echo xslt_process($xh, 'arg:/_xml', 'arg:/_xsl',
NULL, array("/_xml" => $xml, "/_xsl" => $xsl));
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
array(4) {
[0]=>
resource(1) of type (XSLT Processor)
[1]=>
int(3)
[2]=>
int(0)
[3]=>
array(6) {
["msgtype"]=>
string(5) "error"
["code"]=>
string(1) "2"
["module"]=>
string(9) "Sablotron"
["URI"]=>
string(9) "arg:/_xml"
["line"]=>
string(1) "4"
["msg"]=>
string(34) "XML parser error 7: mismatched tag"
}
}
]]>
</screen>
</example>
</refsect1>
<refsect1>
&reftitle.seealso;
<para>
<function>xslt_set_object</function> if you want to use an
object method as handler.
</para>
</refsect1>
</refentry>
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