(PHP 4, PHP 5, PHP 7, PHP 8)

xml_parser_set_optionConfigura las opciones en un intérprete XML


xml_parser_set_option(XMLParser $parser, int $option, string|int $value): bool

Configura una opción en un intérprete XML.



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


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.


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.

Historial de cambios

Versión Descripción
8.0.0 parser expects an XMLParser instance now; previously, a valid xml resource was expected.
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User Contributed Notes 9 notes

15 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:

function callback_cdata($parser, $cdata)

// ... continue processing ...
pupeno at pupeno dot com
21 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:
Thank you.
j[no_spam_please] at [thx]jessepearson dot net
17 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'];
17 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];
ksavage at achaean dot com
19 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.


= "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)) {
} else {

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

$xml_parser = xml_parser_create();
xml_parse_into_struct($xml_parser, $data, $vals, $index);

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


Worked like a dream for me. Enjoy!
ta at NOSPAM dot magicsquare dot info
21 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
matt at mcbridematt dot dhs dot org
21 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
chris at wildcharacters dot com
22 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
anony at mous dot com
24 years ago
Disable case folding or your code will be violating the XML 1.0 specification.
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