Last updated: Sun, 25 Nov 2007

xml_parser_set_option

(PHP 4, PHP 5)

xml_parser_set_option — Set options in an XML parser

Popis

bool xml_parser_set_option ( resource $parser , int $option , mixed $value )

Sets an option in an XML parser.

Parametre

parser

A reference to the XML parser to set an option in.

option

Which option to set. See below.

The following options are available:

**XML parser options**
Option constant	Data type	Description
`XML_OPTION_CASE_FOLDING`	integer	Controls whether case-folding is enabled for this XML parser. Enabled by default.
`XML_OPTION_SKIP_TAGSTART`	integer	Specify how many characters should be skipped in the beginning of a tag name.
`XML_OPTION_SKIP_WHITE`	integer	Whether to skip values consisting of whitespace characters.
`XML_OPTION_TARGET_ENCODING`	string	Sets which target encoding to use in this XML parser.By default, it is set to the same as the source encoding used by xml_parser_create(). Supported target encodings are ISO-8859-1, US-ASCII and UTF-8.

value

The option's new value.

Vrátené hodnoty

This function returns FALSE if parser does not refer to a valid parser, or if the option could not be set. Else the option is set and TRUE is returned.

xml_set_character_data_handler

xml_parser_get_option

Last updated: Sun, 25 Nov 2007

add a note User Contributed Notes
xml_parser_set_option

www.thomaskoch.it
31-Jul-2008 02:22


The option XML_OPTION_SKIP_WHITE has no effect in my PHP 5.2.6 (with expat-1.95.8-5). To skip cdata composed of white space only, simply check for that at the beginning of your cdata callback function:



<?php

function callback_cdata($parser, $cdata)

{

 if(!trim($cdata))

  return;



 // ... continue processing ...

}

?>

maschoen at pobox dot com
11-Oct-2007 12:19


I'm a little confused about using xml_parser_set_option and xml_parser_get_option with XML_OPTION_SKIP_WHITE and XML_OPTION_SKIP_TAGSTART.



Looking at the source code, ...set_option() accepts both ...SKIP_WHITE and ...SKIP_TAGSTART, and sets a program variables.  On the other hand, ...get_option() returns an error for both.   I'm not sure of the code actually uses the variables properly, although it does reference the set variables.  This does look like an oversite.

j[no_spam_please] at [thx]jessepearson dot net
08-Mar-2007 08:08


In the function below, you need to update two lines if you don't want php to throw warnings. 



change these two:

           $elements[$index]['attributes'] = $tag['attributes'];

           $elements[$index]['content'] = $tag['value'];



to this:

      $elements[$index]['attributes'] = empty($tag['attributes']) ? "" : $tag['attributes'];

      $elements[$index]['content']    = empty($tag['value']) ? "" : $tag['value'];

06-Sep-2006 07:56


A little mod to a function posted here...



function xml_to_array( $file )

{

    $parser = xml_parser_create();

    xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, 0 );

    xml_parser_set_option( $parser, XML_OPTION_SKIP_WHITE, 1 );

    xml_parse_into_struct( $parser, file_get_contents($file), $tags );

    xml_parser_free( $parser );

    

    $elements = array();

    $stack = array();

    foreach ( $tags as $tag )

    {

        $index = count( $elements );

        if ( $tag['type'] == "complete" || $tag['type'] == "open" )

        {

            $elements[$index] = array();

            $elements[$index]['name'] = $tag['tag'];

            $elements[$index]['attributes'] = $tag['attributes'];

            $elements[$index]['content'] = $tag['value'];

            

            if ( $tag['type'] == "open" )

            {    # push

                $elements[$index]['children'] = array();

                $stack[count($stack)] = &$elements;

                $elements = &$elements[$index]['children'];

            }

        }

        

        if ( $tag['type'] == "close" )

        {    # pop

            $elements = &$stack[count($stack) - 1];

            unset($stack[count($stack) - 1]);

        }

    }

    return $elements[0];

}

matt at mcbridematt dot dhs dot org
16-Dec-2002 05:56


Re: anony at mous dot com

case folding is a violation of the XHTML specification. xhtml is all in lowercase to be inline with the DOM

pupeno at pupeno dot com
16-Nov-2002 01:14


XML is case sensitive, then, from my point of view, disabling case folding doesn't goes against xml 1.0 specifications but the contrary, disabling case folding allow us to distiguish between diferent cases of the same letter ('a' and 'A') which of XML are two diferent things.

From my point of view, disabling case folding is a good practice and I think it should be disabled by default.

More information on:

http://www.isacat.net/2001/xml/case.htm

and

http://www.w3.org/TR/REC-xml

Thank you.

ta at NOSPAM dot magicsquare dot info
09-Jul-2002 04:52


XML_OPTION_SKIP_WHITE works for me (linux, php 4.2.1)



phpinfo says :



XML Support active 

XML Namespace Support active 

EXPAT Version expat_1.95.2 



i guess it depends on expat version/presence

chris at wildcharacters dot com
21-Oct-2001 07:32


The two 'skip' tags are not available to windows users using PHP 4.0.4.  The following:





$skipWhite = xml_parser_get_option ($xmlParser,XML_OPTION_SKIP_WHITE);


$skipTagStart = xml_parser_get_option ($xmlParser,XML_OPTION_SKIP_TAGSTART);





generates the following errors:


Warning: xml_parser_get_option: unknown option in c:/program files/abria merlin/apache/htdocs/xml/sax_test.php on line 230

anony at mous dot com
20-Apr-2000 05:26


Disable case folding or your code will be violating the XML 1.0 specification.

add a note

xml_set_character_data_handler

xml_parser_get_option

Last updated: Sun, 25 Nov 2007