SunshinePHP Developer Conference 2015

xml_parser_set_option

(PHP 4, PHP 5)

xml_parser_set_optionConfigura las opciones en un intérprete XML

Descripción

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

Configura una opción en un intérprete XML.

Parámetros

parser

Identificador del recurso del intérprete XML sobre el que se va a configurar el valor de la opción.

option

Cual es la opción para configurar. Véase más abajo.

Estan disponibles las siguientes opciones:

Opciones del intérprete XML
Option constant Data type Description
XML_OPTION_CASE_FOLDING integer Controla si case-folding está activada para este intérprete XML. Por defecto activado.
XML_OPTION_SKIP_TAGSTART integer Especifica el número de caracteres que seran omitidos al principio del nombre de una etiqueta.
XML_OPTION_SKIP_WHITE integer Especifica si hay que omitir los valores que consistan en espacios en blanco.
XML_OPTION_TARGET_ENCODING string Configura cual será el target encoding (codificación de caracteres de salida) para usar en este intérprete XML. Por defecto se establece la misma codificación de la fuente fuente usada por xml_parser_create(). Las codificaciones de destino soportadas son ISO-8859-1, US-ASCII y UTF-8.

value

El nuevo valor para la opción.

Valores devueltos

Devuelve TRUE si se ha establecido el nuevo valor para la opción. Puede devolver FALSE si: parser no se refiere a un intérprete válido, o si la opción no se ha podido configurar.

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User Contributed Notes 10 notes

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1
www.thomaskoch.it
6 years ago
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 ...
}
?>
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1
maschoen at pobox dot com
7 years ago
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.
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1
Anonymous
8 years ago
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];
}
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0
ksavage at achaean dot com
9 years ago
Had one heck of a time getting curl to send my XML request.  Tried a lot of different things, FINALLY ended up with this. 

Im making a curl request to paymentech / Orbital 's payment gateway.   Essentially, I took the same header i made for the fsockopen() request, and used it for this curl request. (Hostinc company didnt allow fsockopen().

You'll note that this specific gateway requires a custom content type header.  Thats what gave me the most trouble.  When using the CURLOPT_HTTPHEADER, and CURLOPT_POSTFIELDS together, it doesnt matter, it sends the default post header because of CURLOPT_POSTFIELDS.

<?php

$url
= "https://example.com";
$page = "/proccessing_page.cgi";

$post_string = "<YourXML>All XML stuff Here</YourXML>";

      
$header  = "POST ".$page." HTTP/1.0 \r\n";
       
$header .= "MIME-Version: 1.0 \r\n";
       
$header .= "Content-type: application/PTI26 \r\n";
       
$header .= "Content-length: ".strlen($post_string)." \r\n";
       
$header .= "Content-transfer-encoding: text \r\n";
       
$header .= "Request-number: 1 \r\n";
       
$header .= "Document-type: Request \r\n";
       
$header .= "Interface-Version: Test 1.4 \r\n";
       
$header .= "Connection: close \r\n\r\n";
       
$header .= $post_string;
       
       
$ch = curl_init();
       
curl_setopt($ch, CURLOPT_URL,$url);
      
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
       
curl_setopt($ch, CURLOPT_TIMEOUT, 4);
       
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);

       
$data = curl_exec($ch);         if (curl_errno($ch)) {
           print
curl_error($ch);
        } else {
          
curl_close($ch);
        }

// use XML Parser on $data, and your set!

       
$xml_parser = xml_parser_create();
       
xml_parser_set_option($xml_parser,XML_OPTION_CASE_FOLDING,0);
       
xml_parser_set_option($xml_parser,XML_OPTION_SKIP_WHITE,1);
       
xml_parse_into_struct($xml_parser, $data, $vals, $index);
       
xml_parser_free($xml_parser);

// $vals = array of XML tags.  Go get em!

?>

Worked like a dream for me.  Enjoy!
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0
matt at mcbridematt dot dhs dot org
11 years ago
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
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0
pupeno at pupeno dot com
11 years ago
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.
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0
ta at NOSPAM dot magicsquare dot info
12 years ago
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
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0
chris at wildcharacters dot com
12 years ago
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
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0
anony at mous dot com
14 years ago
Disable case folding or your code will be violating the XML 1.0 specification.
up
-1
j[no_spam_please] at [thx]jessepearson dot net
7 years ago
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'];
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