RegexIterator::setPregFlags
The documentation is a bit sparse for SimpleXmlIterator. Here is an example showing the use of its methods. xml2Array and sxiToArray work together to convert an XML document to an associative array structure.
The contents of cats.xml:
======================================
<cats>
<cat>
<name>Jack</name>
<age>2</age>
<color>grey</color>
<color>white</color>
</cat>
<cat>
<name>Maxwell</name>
<age>12</age>
<color>orange</color>
<color>black</color>
</cat>
</cats>
======================================
<?php
function xml2array($fname){
$sxi = new SimpleXmlIterator($fname, null, true);
return sxiToArray($sxi);
}
function sxiToArray($sxi){
$a = array();
for( $sxi->rewind(); $sxi->valid(); $sxi->next() ) {
if(!array_key_exists($sxi->key(), $a)){
$a[$sxi->key()] = array();
}
if($sxi->hasChildren()){
$a[$sxi->key()][] = sxiToArray($sxi->current());
}
else{
$a[$sxi->key()][] = strval($sxi->current());
}
}
return $a;
}
// Read cats.xml and print the results:
$catArray = xml2array('cats.xml');
print_r($catArray);
?>
Results (reformatted a bit for compactness and clarity):
======================================
Array(
[cat] => Array(
[0] => Array(
[name] => Array( [0] => Jack )
[age] => Array( [0] => 2 )
[color] => Array( [0] => grey,
[1] => white )
)
[1] => Array(
[name] => Array( [0] => Maxwell )
[age] => Array( [0] => 12 )
[color] => Array( [0] => orange
[1] => black )
)
)
)
La classe SimpleXMLIterator
Introduction
La classe SimpleXMLIterator fournit des itérations récursives sur tous les éléments d'un objet SimpleXMLElement.
Synopsis de la classe
SimpleXMLIterator
SimpleXMLIterator
extends
SimpleXMLElement
implements
RecursiveIterator
,
Traversable
,
Iterator
,
Countable
{
/* Méthodes */
}Sommaire
- SimpleXMLIterator::current — Retourne l'entrée courante de SimpleXML
- SimpleXMLIterator::getChildren — Retourne un itérateur pour l'entrée courante, si c'est un objet SimpleXML
- SimpleXMLIterator::hasChildren — Indique si l'entrée courante de SimpleXML est un objet
- SimpleXMLIterator::key — Retourne la clé courante SimpleXML
- SimpleXMLIterator::next — Se déplace sur l'entrée SimpleXML suivante
- SimpleXMLIterator::rewind — Replace le pointeur SimpleXML au début
- SimpleXMLIterator::valid — Vérifie si une ressource SimpleXML contient d'autres entrées
add a note
User Contributed NotesSimpleXMLIterator
ratfactor at gmail dot com
20-Jul-2009 12:08
20-Jul-2009 12:08
David Lanstein
18-Jan-2009 02:40
18-Jan-2009 02:40
Unlike the DirectoryIterator, for one, you'll need to call $it->rewind() before using the iterator in a for() or while() loop. Calling foreach() does rewind the iterator before iteration.