When inserting XML DOM Elements inside existing XML DOM Elements that I loaded from an XML file using the following code, none of my new elements were formatted correctly, they just showed up on one line:
<?php
$dom = DOMDocument::load('file.xml');
$dom->formatOutput = true;
//$dom->add some new elements with child nodes somewhere inside the loaded XML using insertBefore();
$dom->saveXML();
//output: everything looks normal but the new nodes are all on one line.
?>
I found I could pass LIBXML_NOBLANKS to the load method and it would reformat the whole document, including my added stuff:
<?php
$dom = DOMDocument::load('file.xml', LIBXML_NOBLANKS);
$dom->formatOutput = true;
//$dom->add some new elements with child nodes somewhere inside the loaded XML using insertBefore();
$dom->saveXML();
//output: everything looks newly formatted, including new nodes
?>
Hope this helps, took me hours of trial and error to figure this out!
Constantes pré-definidas
As contantes abaixo são definidas por esta extensão e somente estarão disponíveis quando a extensão foi compilada com o PHP ou carregada dinamicamente durante a execução.
-
LIBXML_COMPACT(integer) -
Ativa a otimização de alocação de pequenos nodes. Isto pode tornar rápida sua
aplicação sem necessitar modificar o código.
Nota:
Somente disponível na Libxml >= 2.6.21
-
LIBXML_DTDATTR(integer) - Padrão de atributos DTD
-
LIBXML_DTDLOAD(integer) - Carrega o subset externo
-
LIBXML_DTDVALID(integer) - Valida com o DTD
-
LIBXML_NOBLANKS(integer) - Remove nodes em branco
-
LIBXML_NOCDATA(integer) - Fundi CDATA com text nodes
-
LIBXML_NOEMPTYTAG(integer) -
Expande tags vazias (e.g.
<br/>para<br></br>)Nota:
Esta opção está somente disponível atualmente nas funções DOMDocument::save e DOMDocument::saveXML.
-
LIBXML_NOENT(integer) - Substitue entidades
-
LIBXML_NOERROR(integer) - Suprime mensagens de erro
-
LIBXML_NONET(integer) - Desabilita o acesso a rede quando carregando documentos
-
LIBXML_NOWARNING(integer) - Suprime avisos
-
LIBXML_NOXMLDECL(integer) -
Retira a declaração do XML quando salva o documento
Nota:
Somente disponível na Libxml >= 2.6.21
-
LIBXML_NSCLEAN(integer) - Remove declarações redundantes de namespaces
-
LIBXML_XINCLUDE(integer) - Implementa substituições XInclude
-
LIBXML_ERR_ERROR(integer) - A recoverable error
-
LIBXML_ERR_FATAL(integer) - Um erro fatal
-
LIBXML_ERR_NONE(integer) - Sem erros
-
LIBXML_ERR_WARNING(integer) - Um simples aviso
-
LIBXML_VERSION(integer) - Versão da libxml como 20605 ou 20617
-
LIBXML_DOTTED_VERSION(string) - Versão da libxml como 2.6.5 ou 2.6.17
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User Contributed Notes 4 notes
@oneseventeen ¶
13 years ago
vetalstar at mail dot ru ¶
6 years ago
LIBXML_DOTTED_VERSION option doesn't work.
libxml version: 2.9.4
<?php
echo LIBXML_DOTTED_VERSION;
$xml = new SimpleXMLElement('<fasa_request id="1234567"/>', LIBXML_NOXMLDECL);
?>
siraic at gmail dot com ¶
3 years ago
The name of the constant LIBXML_NOENT is very misleading. Adding this flag actually causes the parser to load and insert the external entities. Omitting it leaves the tags untouched, which is probably what you want.
zachatwork at gmail dot com ¶
14 years ago
Note: The LIBXML_NOXMLDECL constant is defined in this library but is not supported by DOMDocument (yet).
See also: http://bugs.php.net/bug.php?id=47137
<?php
print "PHP_VERSION: ".PHP_VERSION."\n";
print "LIBXML_VERSION: ".LIBXML_VERSION."\n";
print "LIBXML_NOXMLDECL: ".LIBXML_NOXMLDECL."\n";
$dom = new DomDocument();
$dom->loadXML("<foo />");
# This should work but doesn't.
print "DOMDocument doesn't honor LIBXML_NOXMLDECL:\n";
print $dom->saveXML(null,LIBXML_NOXMLDECL);
# This works, and will still work after the above is fixed.
print "Forwards compatible workaround:\n";
$lines = explode("\n", $dom->saveXML(null, LIBXML_NOXMLDECL), 2);
if(!preg_match('/^\<\?xml/', $lines[0]))
print $lines[0];
print $lines[1];
?>
PHP_VERSION: 5.3.1-0.dotdeb.1
LIBXML_VERSION: 20632
LIBXML_NOXMLDECL: 2
DOMDocument doesn't honor LIBXML_NOXMLDECL:
<?xml version="1.0"?>
<foo/>
Forwards compatible workaround:
<foo/>
