What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



xml_set_processing_instruction_handler — Sets the processing instruction handler for the specified XML parser.


int xml_set_processing_instruction_handler(parserID, handler);
resource parserID: Reference to a valid parser
string handler: Function to be used as the event handler


TRUE on success; FALSE on error


Handles instruction processing. Setting the handler toFALSE or an empty string disables the handler. The function returns FALSE if the parser is invalid or the handler was not created.

The function prototype should have the following parameters:

Parameter Description
parser Reference to the XML parser that uses this function
target Target of the processing instruction
data Processing data to be sent to the parser


PHP 3 >= 3.0.6, PHP 4 >= 4.0b1


Example 1436. Set processing instruction handler

function instruction_handler($parser, $target, $data)  {
   print "Target: $target<BR />";
      print "Data: $data<BR /><BR />";

$xmlfile = 'myxmlfile.xml';
$xmlparser = xml_parser_create();
xml_set_processing_instruction_handler($xmlparser, "instruction_handler");

// open a file and read data from it for parsing
$fp = fopen($xmlfile, 'r');
while ($xmldata = fread($fp, 1024)) {

     // parse the data chunk
      if (!xml_parse($xmlparser, $xmldata, feof($fp))) {

            // if parsing fails print the error description and line number
            die( print "ERROR: "
              . xml_error_string(xml_get_error_code($xmlparser))
              . "<BR />"
              . "Line: "
              . xml_get_current_line_number($xmlparser)
              . "<BR />"
              . "Column: "
              . xml_get_current_column_number($xmlparser)
              . "<BR />");

// free the parser memory

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2005, Jelsoft Enterprises Ltd.
Copyright © 2001 - 2005, ThinkDing LLC. All Rights Reserved.