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 )
)
)
)
The SimpleXMLIterator class
Introducere
The SimpleXMLIterator provides recursive iteration over all nodes of a SimpleXMLElement object.
Sinopsisul clasei
SimpleXMLIterator
SimpleXMLIterator
extends
SimpleXMLElement
implements
RecursiveIterator
,
Traversable
,
Iterator
,
Countable
{
/* Methods */
}Cuprins
- SimpleXMLIterator::current — Returns the current element
- SimpleXMLIterator::getChildren — Returns the sub-elements of the current element
- SimpleXMLIterator::hasChildren — Checks whether the current element has sub elements.
- SimpleXMLIterator::key — Return current key
- SimpleXMLIterator::next — Move to next element
- SimpleXMLIterator::rewind — Rewind to the first element
- SimpleXMLIterator::valid — Check whether the current element is valid
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.