As japos mentioned. Take care how you use isEmptyElement. After you are done looping through the attributes: isEmptyElement will be false. You can use moveToElement() to move the cursor back to the element and then you can use isEmptyElement like normal again.
Die Klasse XMLReader
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
Einführung
Die Erweiterung XMLReader ist ein fortschreitender XML-Parser (XML-Pull-Parser). Der Reader agiert wie ein Zeiger, der einen Datenstrom durchläuft und jeden vorbeikommenden Knoten der Reihe nach verarbeitet.
Klassenbeschreibung
class XMLReader
{
/* Konstanten */
/* Eigenschaften */
/* Methoden */
}Eigenschaften
- attributeCount
-
Die Anzahl der Attribute des aktuellen Knotens
- baseURI
-
Der Basis-URI des Knotens
- depth
-
Die Tiefe des Knotens im Baum, beginnend mit 0
- hasAttributes
-
Zeigt an, ob der Knoten Attribute besitzt
- hasValue
-
Zeigt an, ob der Knoten einen Text-Wert besitzt
- isDefault
-
Zeigt an, ob das Attribute als Standard aus der DTD übernommen wurde
- isEmptyElement
-
Zeigt an, ob der Knoten ein leeres Element-Tag ist
- localName
-
Der lokale Name des Knotens
- name
-
Der qualifizierte Name des Knotens
- namespaceURI
-
Der URI des Namensraums, welcher mit dem Knoten assoziiert ist
- nodeType
-
Der Typ des Knotens
- prefix
-
Das Präfix, welches mit dem Namespaces des Knotens assoziiert wird
- value
-
Der Text-Wert des Knotens
- xmlLang
-
Der xml:lang-Bereich, in dem sich der Knoten befindet
Vordefinierte Konstanten
XMLReader-Knoten-Typen
XMLReader::NONE-
Kein Typ
XMLReader::ELEMENT-
Start-Element
XMLReader::ATTRIBUTE-
Attribut-Knoten
XMLReader::TEXT-
Text-Knoten
XMLReader::CDATA-
CDATA-Knoten
XMLReader::ENTITY_REF-
Entitätsreferenz-Knoten
XMLReader::ENTITY-
Entitätsdeklarations-Knoten
XMLReader::PI-
Verarbeitungsanweisungs-Knoten
XMLReader::COMMENT-
Kommentar-Knoten
XMLReader::DOC-
Dokument-Knoten
XMLReader::DOC_TYPE-
Dokumenttyp-Knoten
XMLReader::DOC_FRAGMENT-
Dokumentfragment-Knoten
XMLReader::NOTATION-
Notationsknoten
XMLReader::WHITESPACE-
Whitespace-Knoten
XMLReader::SIGNIFICANT_WHITESPACE-
Significant-Whitespace-Knoten
XMLReader::END_ELEMENT-
Schließendes Element
XMLReader::END_ENTITY-
Entitätsende
XMLReader::XML_DECLARATION-
XML-Deklarations-Knoten
XMLReader-Parser-Optionen
XMLReader::LOADDTD-
DTD laden, aber nicht validieren
XMLReader::DEFAULTATTRS-
DTD und Standardattribute laden, aber nicht validieren
XMLReader::VALIDATE-
DTD laden und beim Parsen validieren
XMLReader::SUBST_ENTITIES-
Entitäten ersetzen und Referenzen erweitern
Inhaltsverzeichnis
- XMLReader::close — Beendet die XMLReader-Eingabe
- XMLReader::expand — Gibt eine Kopie des aktuellen Knotens als DOM-Objekt zurück
- XMLReader::getAttribute — Liefert den Wert eines Attributes nach Namen
- XMLReader::getAttributeNo — Gibt den Wert eines Attributes nach Position zurück
- XMLReader::getAttributeNs — Gibt den Wert eines Attributes nach lokalem Namen und URI zurück
- XMLReader::getParserProperty — Zeigt an, ob die angegebene Eigenschaft gesetzt wurde
- XMLReader::isValid — Zeigt an, ob das geparste Dokument valide ist
- XMLReader::lookupNamespace — Prüft, ob ein Namensbereich für einen Präfix vorhanden ist
- XMLReader::moveToAttribute — Zeiger auf benanntes Attribut setzen
- XMLReader::moveToAttributeNo — Move cursor to an attribute by index
- XMLReader::moveToAttributeNs — Move cursor to a named attribute
- XMLReader->moveToElement — Zeiger positionieren auf das Elternelement des aktuellen Attributes
- XMLReader::moveToFirstAttribute — Zeiger auf erstes Attribut setzen
- XMLReader::moveToNextAttribute — Zeiger auf nächstes Attribut setzen
- XMLReader::next — Zeiger auf nächstes Element setzen und Kinder überspringen
- XMLReader::open — URI angeben, die auf XML-Inhalt verweist, der geparst werden soll
- XMLReader::read — Zeiger auf das nächste Element setzen
- XMLReader::readInnerXml — Erhalte XML des aktuellen Knotens
- XMLReader::readOuterXml — Liest XML des aktuellen Knotens, inklusive den Knoten selbst
- XMLReader::readString — Liest den Inhalt des aktuellen Knotens als Zeichenkette
- XMLReader::setParserProperty — Parser-Optionen setzen
- XMLReader::setRelaxNGSchema — Dateiname oder URI des RelaxNG-Schema setzen
- XMLReader::setRelaxNGSchemaSource — Zeichenkette setzen, die RelaxNG-Schemadaten enthält
- XMLReader::setSchema — Validiert Dokument gegen XSD
- XMLReader::XML — Zeichenkette setzen, deren Inhalt geparst werden soll
add a note
User Contributed Notes 20 notes
Sean Colin Ruiz ¶
7 years ago
james dot ellis at example dot com ¶
15 years ago
The "XML2Assoc" functions noted here should be used with caution... basically they are duplicating the functionality already present in SimpleXML. They may work but they won't scale.
Their are two main uses cases for parsing XML, each suited to either XMLReader or SimpleXML.
1. SimpleXML is an excellent tool for easy access to an XML document tree using native PHP data types. It starts to flounder with massive (> 50M or so) XML documents, as it reads the entire document into memory before it can be processed. SimpleXML will just laugh at you then die when your server runs out of memory (or it will cause a load spike).
2. Aside from the reasoning behind massive XML documents, if you have to deal with massive XML documents, use XMLReader to process them. Don't try and gather an entire XML document into a PHP data structure using XMLReader and a PHP xml2assoc() function, you are reinventing the SimpleXML wheel.
When parsing massive XML documents using XMLReader, gather the data you need to perform an operation then perform it before skipping to the next node. Do not build massive data structures from a massive XML document, your server (and it's admins) will not like you.
jart (at) mail.ru ¶
14 years ago
Guys, I hope this example will help
you can erase prints showing the process-
and it will be a piece of nice code.
<?php
function xml2assoc($xml, $name)
{
print "<ul>";
$tree = null;
print("I'm inside " . $name . "<br>");
while($xml->read())
{
if($xml->nodeType == XMLReader::END_ELEMENT)
{
print "</ul>";
return $tree;
}
else if($xml->nodeType == XMLReader::ELEMENT)
{
$node = array();
print("Adding " . $xml->name ."<br>");
$node['tag'] = $xml->name;
if($xml->hasAttributes)
{
$attributes = array();
while($xml->moveToNextAttribute())
{
print("Adding attr " . $xml->name ." = " . $xml->value . "<br>");
$attributes[$xml->name] = $xml->value;
}
$node['attr'] = $attributes;
}
if(!$xml->isEmptyElement)
{
$childs = xml2assoc($xml, $node['tag']);
$node['childs'] = $childs;
}
print($node['tag'] . " added <br>");
$tree[] = $node;
}
else if($xml->nodeType == XMLReader::TEXT)
{
$node = array();
$node['text'] = $xml->value;
$tree[] = $node;
print "text added = " . $node['text'] . "<br>";
}
}
print "returning " . count($tree) . " childs<br>";
print "</ul>";
return $tree;
}
echo "<PRE>";
$xml = new XMLReader();
$xml->open('test.xml');
$assoc = xml2assoc($xml, "root");
$xml->close();
print_r($assoc);
echo "</PRE>";
?>
It reads this xml:
<test>
<hallo volume="loud"> me <br/> lala </hallo>
<hallo> me </hallo>
</test>
kula_shakerz ¶
11 years ago
Found this in the IXmlReader docs at msdn but it's also valid for XMLReader in PHP.
You should save the value of $isEmptyElement before processing attributes, or call moveToElement to make $isEmptyElement valid after processing attributes.
$isEmptyElement returns FALSE when XMLReader is positioned on an attribute node, even if attribute's parent element is empty.
godseth at o2 dot pl ¶
16 years ago
Thanks rein_baarsma33 AT hotmail DOT com for bugfixes.
This is my new child of XML parsing method based on my and yours modification.
XML2ASSOC Is a complete solution for parsing ordinary XML
<?php
/**
* XML2Assoc Class to creating
* PHP Assoc Array from XML File
*
* @author godseth (AT) o2.pl & rein_baarsma33 (AT) hotmail.com (Bugfixes in parseXml Method)
* @uses XMLReader
*
*/
class Xml2Assoc {
/**
* Optimization Enabled / Disabled
*
* @var bool
*/
protected $bOptimize = false;
/**
* Method for loading XML Data from String
*
* @param string $sXml
* @param bool $bOptimize
*/
public function parseString( $sXml , $bOptimize = false) {
$oXml = new XMLReader();
$this -> bOptimize = (bool) $bOptimize;
try {
// Set String Containing XML data
$oXml->XML($sXml);
// Parse Xml and return result
return $this->parseXml($oXml);
} catch (Exception $e) {
echo $e->getMessage();
}
}
/**
* Method for loading Xml Data from file
*
* @param string $sXmlFilePath
* @param bool $bOptimize
*/
public function parseFile( $sXmlFilePath , $bOptimize = false ) {
$oXml = new XMLReader();
$this -> bOptimize = (bool) $bOptimize;
try {
// Open XML file
$oXml->open($sXmlFilePath);
// // Parse Xml and return result
return $this->parseXml($oXml);
} catch (Exception $e) {
echo $e->getMessage(). ' | Try open file: '.$sXmlFilePath;
}
}
/**
* XML Parser
*
* @param XMLReader $oXml
* @return array
*/
protected function parseXml( XMLReader $oXml ) {
$aAssocXML = null;
$iDc = -1;
while($oXml->read()){
switch ($oXml->nodeType) {
case XMLReader::END_ELEMENT:
if ($this->bOptimize) {
$this->optXml($aAssocXML);
}
return $aAssocXML;
case XMLReader::ELEMENT:
if(!isset($aAssocXML[$oXml->name])) {
if($oXml->hasAttributes) {
$aAssocXML[$oXml->name][] = $oXml->isEmptyElement ? '' : $this->parseXML($oXml);
} else {
if($oXml->isEmptyElement) {
$aAssocXML[$oXml->name] = '';
} else {
$aAssocXML[$oXml->name] = $this->parseXML($oXml);
}
}
} elseif (is_array($aAssocXML[$oXml->name])) {
if (!isset($aAssocXML[$oXml->name][0]))
{
$temp = $aAssocXML[$oXml->name];
foreach ($temp as $sKey=>$sValue)
unset($aAssocXML[$oXml->name][$sKey]);
$aAssocXML[$oXml->name][] = $temp;
}
if($oXml->hasAttributes) {
$aAssocXML[$oXml->name][] = $oXml->isEmptyElement ? '' : $this->parseXML($oXml);
} else {
if($oXml->isEmptyElement) {
$aAssocXML[$oXml->name][] = '';
} else {
$aAssocXML[$oXml->name][] = $this->parseXML($oXml);
}
}
} else {
$mOldVar = $aAssocXML[$oXml->name];
$aAssocXML[$oXml->name] = array($mOldVar);
if($oXml->hasAttributes) {
$aAssocXML[$oXml->name][] = $oXml->isEmptyElement ? '' : $this->parseXML($oXml);
} else {
if($oXml->isEmptyElement) {
$aAssocXML[$oXml->name][] = '';
} else {
$aAssocXML[$oXml->name][] = $this->parseXML($oXml);
}
}
}
if($oXml->hasAttributes) {
$mElement =& $aAssocXML[$oXml->name][count($aAssocXML[$oXml->name]) - 1];
while($oXml->moveToNextAttribute()) {
$mElement[$oXml->name] = $oXml->value;
}
}
break;
case XMLReader::TEXT:
case XMLReader::CDATA:
$aAssocXML[++$iDc] = $oXml->value;
}
}
return $aAssocXML;
}
/**
* Method to optimize assoc tree.
* ( Deleting 0 index when element
* have one attribute / value )
*
* @param array $mData
*/
public function optXml(&$mData) {
if (is_array($mData)) {
if (isset($mData[0]) && count($mData) == 1 ) {
$mData = $mData[0];
if (is_array($mData)) {
foreach ($mData as &$aSub) {
$this->optXml($aSub);
}
}
} else {
foreach ($mData as &$aSub) {
$this->optXml($aSub);
}
}
}
}
}
?>
[EDIT BY danbrown AT php DOT net: Fixes were also provided by "Alex" and (qdog AT qview DOT org) in user notes on this page (since removed).]
dkrnl at yandex dot ru ¶
11 years ago
Wrapper XMLReader class, for simple SAX-reading huge xml:
https://github.com/dkrnl/SimpleXMLReader
Usage example: http://github.com/dkrnl/SimpleXMLReader/blob/master/examples/example1.php
<?php
/**
* Simple XML Reader
*
* @license Public Domain
* @author Dmitry Pyatkov(aka dkrnl) <dkrnl@yandex.ru>
* @url http://github.com/dkrnl/SimpleXMLReader
*/
class SimpleXMLReader extends XMLReader
{
/**
* Callbacks
*
* @var array
*/
protected $callback = array();
/**
* Add node callback
*
* @param string $name
* @param callback $callback
* @param integer $nodeType
* @return SimpleXMLReader
*/
public function registerCallback($name, $callback, $nodeType = XMLREADER::ELEMENT)
{
if (isset($this->callback[$nodeType][$name])) {
throw new Exception("Already exists callback $name($nodeType).");
}
if (!is_callable($callback)) {
throw new Exception("Already exists parser callback $name($nodeType).");
}
$this->callback[$nodeType][$name] = $callback;
return $this;
}
/**
* Remove node callback
*
* @param string $name
* @param integer $nodeType
* @return SimpleXMLReader
*/
public function unRegisterCallback($name, $nodeType = XMLREADER::ELEMENT)
{
if (!isset($this->callback[$nodeType][$name])) {
throw new Exception("Unknow parser callback $name($nodeType).");
}
unset($this->callback[$nodeType][$name]);
return $this;
}
/**
* Run parser
*
* @return void
*/
public function parse()
{
if (empty($this->callback)) {
throw new Exception("Empty parser callback.");
}
$continue = true;
while ($continue && $this->read()) {
if (isset($this->callback[$this->nodeType][$this->name])) {
$continue = call_user_func($this->callback[$this->nodeType][$this->name], $this);
}
}
}
/**
* Run XPath query on current node
*
* @param string $path
* @param string $version
* @param string $encoding
* @return array(SimpleXMLElement)
*/
public function expandXpath($path, $version = "1.0", $encoding = "UTF-8")
{
return $this->expandSimpleXml($version, $encoding)->xpath($path);
}
/**
* Expand current node to string
*
* @param string $version
* @param string $encoding
* @return SimpleXMLElement
*/
public function expandString($version = "1.0", $encoding = "UTF-8")
{
return $this->expandSimpleXml($version, $encoding)->asXML();
}
/**
* Expand current node to SimpleXMLElement
*
* @param string $version
* @param string $encoding
* @param string $className
* @return SimpleXMLElement
*/
public function expandSimpleXml($version = "1.0", $encoding = "UTF-8", $className = null)
{
$element = $this->expand();
$document = new DomDocument($version, $encoding);
$node = $document->importNode($element, true);
$document->appendChild($node);
return simplexml_import_dom($node, $className);
}
/**
* Expand current node to DomDocument
*
* @param string $version
* @param string $encoding
* @return DomDocument
*/
public function expandDomDocument($version = "1.0", $encoding = "UTF-8")
{
$element = $this->expand();
$document = new DomDocument($version, $encoding);
$node = $document->importNode($element, true);
$document->appendChild($node);
return $document;
}
}
?>
desk_ocean at msn dot com ¶
16 years ago
make some modify from Sergey Aikinkulov's note
<?php
function xml2assoc(&$xml){
$assoc = NULL;
$n = 0;
while($xml->read()){
if($xml->nodeType == XMLReader::END_ELEMENT) break;
if($xml->nodeType == XMLReader::ELEMENT and !$xml->isEmptyElement){
$assoc[$n]['name'] = $xml->name;
if($xml->hasAttributes) while($xml->moveToNextAttribute()) $assoc[$n]['atr'][$xml->name] = $xml->value;
$assoc[$n]['val'] = xml2assoc($xml);
$n++;
}
else if($xml->isEmptyElement){
$assoc[$n]['name'] = $xml->name;
if($xml->hasAttributes) while($xml->moveToNextAttribute()) $assoc[$n]['atr'][$xml->name] = $xml->value;
$assoc[$n]['val'] = "";
$n++;
}
else if($xml->nodeType == XMLReader::TEXT) $assoc = $xml->value;
}
return $assoc;
}
?>
add else if($xml->isEmptyElement)
may be some xml has emptyelement
boukeversteegh at gmail dot com ¶
15 years ago
XML to ASSOCIATIVE ARRAY
Improved algorithm based on Sergey Aikinkulov's. The problem was that it would overwrite nodes if they had the same tag name. Because of that <a><b/><b/><a> would be read as if <a><b/><a/>. This algorithm handles it better and outputs an easy to understand array:
<?php
function xml2assoc($xml) {
$tree = null;
while($xml->read())
switch ($xml->nodeType) {
case XMLReader::END_ELEMENT: return $tree;
case XMLReader::ELEMENT:
$node = array('tag' => $xml->name, 'value' => $xml->isEmptyElement ? '' : xml2assoc($xml));
if($xml->hasAttributes)
while($xml->moveToNextAttribute())
$node['attributes'][$xml->name] = $xml->value;
$tree[] = $node;
break;
case XMLReader::TEXT:
case XMLReader::CDATA:
$tree .= $xml->value;
}
return $tree;
}
?>
Usage:
myxml.xml:
------
<PERSON>
<NAME>John</NAME>
<PHONE type="home">555-555-555</PHONE>
</PERSON>
----
<?
$xml = new XMLReader();
$xml->open('myxml.xml');
$assoc = xml2assoc($xml);
$xml->close();
print_r($assoc);
?>
Outputs:
Array
(
[0] => Array
(
[tag] => PERSON
[value] => Array
(
[0] => Array
(
[tag] => NAME
[value] => John
)
[1] => Array
(
[tag] => PHONE
[value] => 555-555-555
[attributes] => Array
(
[type] => home
)
)
)
)
)
For reasons that have to do with recursion, it returns an array with the ROOT xml node as the first childNode, rather than to return only the ROOT node.
japos dot trash at googlemail dot com ¶
14 years ago
Take care about how to use XMLReader::$isElementEmpty. I don't know if it is a bug or not, but $isElementEmpty is set for the current context and NOT just for the element. If you move your cursor to an attribute, $isElementEmpty will ALWAYS be false.
<?php
$xml = new XMLReader();
$xml->XML('<tag attr="value" />');
$xml->read();
var_dump($xml->isEmptyElement);
$xml->moveToNextAttribute();
var_dump($xml->isEmptyElement);
?>
will output
(bool) true
(bool) false
So be sure to store $isEmptyElement before moving the cursor.
PxL ¶
15 years ago
A basic parser
<?php
function xml2assoc($xml) {
$arr = array();
if (!preg_match_all('|\<\s*?(\w+).*?\>(.*)\<\/\s*\\1.*?\>|s', $xml, $m)) return $xml;
if (is_array($m[1]))
for ($i = 0;$i < sizeof($m[1]); $i++) $arr[$m[1][$i]] = xml2assoc($m[2][$i]);
else $arr[$m[1]] = xml2assoc($m[2]);
return $arr;
}
?>
orion at ftf-hq dot dk ¶
18 years ago
Some more documentation (i.e. examples) would be nice :-)
This is how I read some mysql parameters in an xml file:
<?php
$xml = new XMLReader();
$xml->open("config.xml");
$xml->setParserProperty(2,true); // This seems a little unclear to me - but it worked :)
while ($xml->read()) {
switch ($xml->name) {
case "mysql_host":
$xml->read();
$conf["mysql_host"] = $xml->value;
$xml->read();
break;
case "mysql_username":
$xml->read();
$conf["mysql_user"] = $xml->value;
$xml->read();
break;
case "mysql_password":
$xml->read();
$conf["mysql_pass"] = $xml->value;
$xml->read();
break;
case "mysql_database":
$xml->read();
$conf["mysql_db"] = $xml->value;
$xml->read();
break;
}
}
$xml->close();
?>
The XML file used:
<?xml version='1.0'?>
<MySQL_INIT>
<mysql_host>localhost</mysql_host>
<mysql_database>db_database</mysql_database>
<mysql_username>root</mysql_username>
<mysql_password>password</mysql_password>
</MySQL_INIT>
Sergey Aikinkulov ¶
16 years ago
Next version xml2assoc with some improve fixes:
- no doubled data
- no buffer arrays
<?php
/*
Read XML structure to associative array
--
Using:
$xml = new XMLReader();
$xml->open([XML file]);
$assoc = xml2assoc($xml);
$xml->close();
*/
function xml2assoc($xml) {
$assoc = null;
while($xml->read()){
switch ($xml->nodeType) {
case XMLReader::END_ELEMENT: return $assoc;
case XMLReader::ELEMENT:
$assoc[$xml->name][] = array('value' => $xml->isEmptyElement ? '' : xml2assoc($xml));
if($xml->hasAttributes){
$el =& $assoc[$xml->name][count($assoc[$xml->name]) - 1];
while($xml->moveToNextAttribute()) $el['attributes'][$xml->name] = $xml->value;
}
break;
case XMLReader::TEXT:
case XMLReader::CDATA: $assoc .= $xml->value;
}
}
return $assoc;
}
?>
lee8oi at gmail dot com ¶
12 years ago
Sometimes you have an unusual URL that doesn't actually point to an xml file but still returns xml as output (Like the Battlefield Heroes generated syndication urls). Using get_file_contents(url) you can retrieve the xml data from these urls and pass it as a variable for processing as an XML String.
Unfortunately simpleXML or xml DOM cannot process all xml strings. Some have error boxes added to the end of them (such as Battlefield Heroes syndicated news). These boxes cause an end of file sort of error and closes out the script. XMLReader grabs data from these strings without error.
eef dot vreeland at gmail dot com ¶
7 years ago
Please discard my previous note; I pressed 'Add Note' too quickly
About (non-)self-closing tags:
A) <tag></tag>
$xmlRdr->isEmptyElement => false
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => false
B) <tag />
$xmlRdr->isEmptyElement => true
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => false
C) <tag attribute="value"></tag>
$xmlRdr->isEmptyElement => false
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => true
D) <tag attribute="value" />
$xmlRdr->isEmptyElement => true
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => true
... and always use the '===' operator when testing properties
eef dot vreeland at gmail dot com ¶
7 years ago
Note that when:
A) <tag></tag>
$xmlRdr->isEmptyElement => false
$xmlRdr->hasValue => true
$xmlRdr->value => ''
$xmlRdr->hasAttributes => false
B) <tag />
$xmlRdr->isEmptyElement => true
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => false
C) <tag attribute="value"></tag>
$xmlRdr->isEmptyElement => false
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => true
D) <tag attribute="value" />
$xmlRdr->isEmptyElement => true
$xmlRdr->hasValue => false
$xmlRdr->value => ''
$xmlRdr->hasAttributes => true
casella dot email at google dot mail dot com ¶
12 years ago
To verify that all nodes are read without error/warning you can use this code:
<?php
$endofxml = false;
$xml_url = "example.xml";
$reader = new XMLReader();
if(!$reader->open($xml_url)){
print "Error to open XML: $xml_url\n";
} else {
while ($reader->read()) {
$firstnode = (!isset($firstnode)) ? $reader->name : $firstnode;
/*
DO SOMETHING
*/
if ($reader->nodeType == XMLReader::END_ELEMENT && $reader->name == $firstnode) {
$endofxml = true;
}
}
}
if($endofxml) {
print "no error found";
} else {
print "error found";
}
?>
This code is useful to trap $reader->read() error/warning.
itari ¶
16 years ago
<?php
function parseXML($node,$seq,$path) {
global $oldpath;
if (!$node->read())
return;
if ($node->nodeType != 15) {
print '<br/>'.$node->depth;
print '-'.$seq++;
print ' '.$path.'/'.($node->nodeType==3?'text() = ':$node->name);
print $node->value;
if ($node->hasAttributes) {
print ' [hasAttributes: ';
while ($node->moveToNextAttribute()) print '@'.$node->name.' = '.$node->value.' ';
print ']';
}
if ($node->nodeType == 1) {
$oldpath=$path;
$path.='/'.$node->name;
}
parseXML($node,$seq,$path);
}
else parseXML($node,$seq,$oldpath);
}
$source = "<tag1>this<tag2 id='4' name='foo'>is</tag2>a<tag2 id='5'>common</tag2>record</tag1>";
$xml = new XMLReader();
$xml->XML($source);
print htmlspecialchars($source).'<br/>';
parseXML($xml,0,'');
?>
Output:
<tag1>this<tag2 id='4' name='foo'>is</tag2>a<tag2 id='5'>common</tag2>record</tag1>
0-0 /tag1
1-1 /tag1/text() = this
1-2 /tag1/tag2 [hasAttributes: @id = 4 @name = foo ]
2-3 /tag1/text() = is
1-4 /text() = a
1-5 /tag2 [hasAttributes: @id = 5 ]
2-6 /text() = common
1-7 /text() = record
andrei_antal at yahoo dot com ¶
15 years ago
<?php
//Pull certain elements
$reader = new XMLReader();
$reader->open($xmlfile);
while ($reader->read()) {
switch ($reader->nodeType) {
case (XMLREADER::ELEMENT):
if ($reader->name == "Code")
{
$reader->read();
$code = trim($reader->value);
echo "$code\n";
break;
}
if ($reader->name == "Name")
{
$reader->read();
$customername = trim( $reader->value );
echo "$name\n";
break;
}
if ($reader->name == "Camp")
{
$camp = trim($reader->getAttribute("ID"));
echo "$camp\n";
break;
}
}
}
?>
Mike De Smet ¶
12 years ago
For those of you getting xml files that do not contain duplicate elements (in the same element), the following converter converts to arrays with key/value mapping (thus overwriting duplicate elements!):
Note this is untested with attributes although I built in support.
<?php
function xml2assoc($xml, array &$target = array()) {
while ($xml->read()) {
switch ($xml->nodeType) {
case XMLReader::END_ELEMENT:
return $target;
case XMLReader::ELEMENT:
$name = $xml->name;
$target[$name] = $xml->hasAttributes ? array() : '';
if (!$xml->isEmptyElement) {
$target[$name] = array();
xml2assoc($xml, $target[$name]);
}
if ($xml->hasAttributes)
while($xml->moveToNextAttribute())
$target[$name]['@'.$xml->name] = $xml->value;
break;
case XMLReader::TEXT:
case XMLReader::CDATA:
$target = $xml->value;
}
}
return $target;
}
?>
jnettles at inccrra dot org ¶
15 years ago
Just in case someone is confused, if you're wanting to simply pass a string of XML instead of an entire file, you would do this.
<?php
$foo = new XMLReader();
$foo->xml($STRING);
?>
.... where $STRING holds your XML. You cannot pass it like $foo = $STRING or $foo->xml = $STRING.
