RegexIterator::setPregFlags
Here's a simple function to convert an XML string to an array -
<?php
// PHP5.3 and above only
function parse($str) {
$f = function($iter) {
foreach($iter as $key=>$val)
$arr[$key][] = ($iter->hasChildren())?
call_user_func (__FUNCTION__, $val)
: strval($val);
return $arr;
};
return $f(new SimpleXmlIterator($str, null));
}
?>
PHP 5.2 and below do not have anonymous functions.
But you can create a helper function to achieve the same thing -
<?php
function parse($str) {
return parseHelper(new SimpleXmlIterator($str, null));
}
function parseHelper($iter) {
foreach($iter as $key=>$val)
$arr[$key][] = ($iter->hasChildren())?
call_user_func (__FUNCTION__, $val)
: strval($val);
return $arr;
}
?>
Using it is straightforward enough -
<?php
$xml = '
<movies>
<movie>abcd</movie>
<movie>efgh</movie>
<movie>hijk</movie>
</movies>';
var_dump(parse($xml));
?>
This will output -
array
'movie' =>
array
0 => string 'abcd' (length=4)
1 => string 'efgh' (length=4)
2 => string 'hijk' (length=4)
A classe SimpleXMLIterator
Introdução
...
Sinopse da classe
SimpleXMLIterator
extends
SimpleXMLElement
implements
RecursiveIterator
,
Traversable
,
Iterator
,
Countable
{
/* Métodos */
}Índice
- SimpleXMLIterator::current — Retorna o elemento atual do SimpleXML
- SimpleXMLIterator::getChildren — Retorna um iterador para o elemento atual se ele for um objeto SimpleXML
- SimpleXMLIterator::hasChildren — Retorna se o elemento atual é um objeto SimpleXML
- SimpleXMLIterator::key — Retorna a chave atual do SimpleXML
- SimpleXMLIterator::next — Avança para o próximo elemento
- SimpleXMLIterator::rewind — Recomeça o SimpleXML
- SimpleXMLIterator::valid — Verifica se o SimpleXML possui mais elementos
User Contributed Notes
SimpleXMLIterator
SimpleXMLIterator
ajnsit dot NOSPAM at gmail dot com
17-Mar-2011 07:14
17-Mar-2011 07:14
ratfactor at gmail dot com
19-Jul-2009 02:08
19-Jul-2009 02:08
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 )
)
)
)
David Lanstein
17-Jan-2009 04:40
17-Jan-2009 04:40
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.