Description
void 
xslt_set_error_handler ( resource xh, mixed handler)
     Set an error handler function for the XSLT processor given by 
     xh, this function will be called whenever an 
     error occurs in the XSLT transformation (this function is also called
     for notices).
    
     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:
     error_handler ( resource xh, int error_level, int error_code, array messages)
    
     
| 例子 1. xslt_set_error_handler() Example | 
<?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));
 
 ?>
 | 
 
       This example will output something similar to:
       | 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"
  }
} | 
 | 
    
     Instead of a function name, an array containing an object reference and
     a method name can also be supplied.