SimpleXML 関数
目次
- simplexml_import_dom — XML または HTML ノードから SimpleXMLElement オブジェクトを取得する
- simplexml_load_file — XMLファイルをパースし、オブジェクトに代入する
- simplexml_load_string — XML 文字列をオブジェクトに代入する
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User Contributed Notes 37 notes
help 🙂 @ theapotek 🙂 com ¶
13 years ago
If you are having trouble accessing CDATA in your simplexml document, you don't need to str_replace/preg_replace the CDATA out before loading it with simplexml.
You can do this instead, and all your CDATA contents will be merged into the element contents as strings.
$xml = simplexml_load_file($xmlfile,
'SimpleXMLElement', LIBXML_NOCDATA);
cmsa at gmx dot de ¶
17 years ago
I had a problem with entities.
My first solution:
I saved Data that way:
$ENTRY_->
addchild('Nachricht',htmlentities($_POST["blog"]));
Had Entities in the XML-File like:
<!ENTITY auml "&auml">
And I loaded the Data that way:
html_entity_decode($ENTRY->Nachname);
But after saving and
loading the xml-file the entity-entry
<!ENTITY auml "&auml">
disappeared. strange...
My second solution:
With saving the Data this way:
$ENTRY_->
addchild('Nachricht',htmlentities(htmlentities($_POST["blog"])));
I can now load it with html_entity_decode without the
entity-entry in the XML-file!
I tested it with äöü.
Hope it helpes.
joel [from the website] purerave.com ¶
17 years ago
It doesn't mention this anywhere, but creationg a new SimpleXMLElement object from a non-valid string throws an exception. It looks ugly in the php log as it dumps the stack in multiple lines.
The correct way to create a new SimpleXMLElement object is like so:
<?php
$xmlstr = ''; // empty to throw an exception
try {
$xml = new SimpleXMLElement($xmlstr);
} catch (Exception $e) {
// handle the error
echo '$xmlstr is not a valid xml string';
}
?>
brcavanagh AT NO SPAM hotmail.com ¶
19 years ago
If you are looking to use SimpleXML for anything but reading XML documents, you should really reconsider, and use the XML DOM library. By the time you get enough utilities implemented in DOM to handle all the set backs in SimpleXML, you will have defeated the purpose of using SimpleXML. There are a few reasons for this, and there are already many workrounds, but the primairy issues are this
1) No complex node assignment. You cannot switch nodes or replace them.
2) No appending new child nodes
3) Whenever you do something like $new_node = $xml_doc->node you will always get a reference even if you use a clone method, which will crash the script.
Other than that, its a great tool for reading docs.
r dot m dot 0100101 at gmail dot com ¶
11 years ago
This is a slight adjustment to http://www.php.net/manual/en/ref.simplexml.php#103617 's function.
The function given by them would convert a simpleXML to an array but only at the highest level. Once you add the is_array check with the is_object it should convert each level to an array (well it did for me through 3 levels).
function simpleXmlObjectToArray ( $xmlObject, $out = array () )
{
foreach ( (array) $xmlObject as $index => $node )
$out[$index] = ( is_object ( $node ) || is_array($node) )
? simpleXmlObjectToArray ( $node )
: $node;
return $out;
}
Happy Coding!
William Fahria ¶
11 years ago
A simple implementation:
You can inform a direct XML in text format to the function.
function eoXML2Array($xmlContent, $out = array()){
$xmlObject = is_object($xmlContent) ? $xmlContent : simplexml_load_string($xmlContent);
foreach((array) $xmlObject as $index => $node)
$out[$index] = ( is_object($node) || is_array($node) ) ? eoXML2Array( $node ) : $node;
return $out;
}
Usage: $your_array = eoXML2Array(your xml text);
paul at preinheimer dot com ¶
19 years ago
Hi,
If you want to access an element that has a dash in its name, (as is common with the XML documents provided by the Library of Congress, as well as the NWS) you will need to handle it a little bit differently.
You can either use XPATH, which works fine, but will return an array of results every time, even if there is a single result.
eg.
<?php
$xml->xpath('/data/time-layout/start-valid-time');
?>
You can also choose just to encapsulate the element names containing a dash:
<?php $xml->data->{'time-layout'}->{'start-valid-time'} ?>
--
On a only partially related note, dealing with SimpleXML is one of the only times I have employed casting with PHP. While iterating (foreach) through the valid times, echo'ing the element worked great (it merely echo'ed the apropriate time), assigning it to another variable resulted in a SimpleXML object containing the time to be assigned, rather than just the time itself. This was resolved by casting the time to a string:
<?php
foreach($xml->data->{'time-layout'}->{'start-valid-time'} AS $time)
{
$weatherDates[] = (string) $time;
}
?>
brandonkirsch at gmail dot com ¶
11 years ago
Contrary to other notes posted here, SimpleXML *DOES NOT* properly handle non-UTF8 encoded XML documents.
A proper "iso-8859-1" declared and encoded XML document will not parse with SimpleXML for PHP 5.2.17 or 5.5.1 when using extended characters (that is, byte values greater than 127)
DOMDocument, on the other hand, will correctly parse incoming iso-8859-1 XML documents and can also be used to perform character translation to UTF8:
$dom = new DOMDocument();
if($dom->loadXML($fileContents)){ // $fileContents is an XML document with iso-8859-1 encoding specified in the declaration
$dom->encoding = 'utf-8'; // convert document encoding to UTF8
return $dom->saveXML(); // return valid, utf8-encoded XML
andrvm ¶
16 years ago
<?php
/**
* Remove node/nodes xml with xpath
*
* @param SimpleXMLElement $xml
* @param string XPath $path
* @param string ('one'|'child'|'all') $multi
*
* Use:
*
* Example xml file - http://ru2.php.net/manual/ru/ref.simplexml.php
*
* $xml = simplexml_load_file($xmlfile);
*
* //1. remove only 1 node (without child nodes)
* // $path must return only 1 (unique) node without child nodes
* removeNode($xml, '//movie/rating[@type="thumbs"]');
*
* //2. remove 1 node (with 1 child nodes)
* // $path can return any nodes - will be removed only first node
* // with all child nodes
* removeNode($xml, '//characters', 'child')
*
* //3. remove all nodes (with child nodes)
* // $path can return any nodes - will be removed all
* // with child nodes
* removeNode($xml, '//rating', 'all')
*
* $xml->asXML($xmlfile);
*
*/
function removeNode($xml, $path, $multi='one')
{
$result = $xml->xpath($path);
# for wrong $path
if (!isset($result[0])) return false;
switch ($multi) {
case 'all':
$errlevel = error_reporting(E_ALL & ~E_WARNING);
foreach ($result as $r) unset ($r[0]);
error_reporting($errlevel);
return true;
case 'child':
unset($result[0][0]);
return true;
case 'one':
if (count($result[0]->children())==0 && count($result)==1) {
unset($result[0][0]);
return true;
}
default:
return false;
}
}
?>
p.s. after use (if deleted all nodes):
<?php
function trimXml($xmlfile)
{
$dom = new DOMDocument();
$dom->preserveWhiteSpace = false;
if (!$dom->load($xmlfile)) return false;
$dom->formatOutput = true;
if (!$dom->save($xmlfile)) return false;
return true;
}
?>
T CHASSAGNETTE t_chassagnette at yahoo dot fr ¶
19 years ago
Another method to parse an XML Document into a PHP array with SIMPLEXML inspired from Daniel FAIVRE !
<?php
function xml2php($xml)
{
$fils = 0;
$tab = false;
$array = array();
foreach($xml->children() as $key => $value)
{
$child = xml2php($value);
//To deal with the attributes
foreach($node->attributes() as $ak=>$av)
{
$child[$ak] = (string)$av;
}
//Let see if the new child is not in the array
if($tab==false && in_array($key,array_keys($array)))
{
//If this element is already in the array we will create an indexed array
$tmp = $array[$key];
$array[$key] = NULL;
$array[$key][] = $tmp;
$array[$key][] = $child;
$tab = true;
}
elseif($tab == true)
{
//Add an element in an existing array
$array[$key][] = $child;
}
else
{
//Add a simple element
$array[$key] = $child;
}
$fils++;
}
if($fils==0)
{
return (string)$xml;
}
return $array;
}
?>
ngkongs at gmail dot com ¶
16 years ago
fix the function i posted before, have a wrong quote placement
function implode2($glue="", $var){
if ($var){
foreach ($var as $value){
$array[]=strval($value);
}
return implode($glue, $array);
}
else return false;
}
Eric ¶
11 years ago
If the SimpleXMLObject contains an array, adding is_array() allows the function to keep digging for Objects.
<?php
function xml2array ( $xmlObject, $out = array () )
{
foreach ( (array) $xmlObject as $index => $node )
$out[$index] = ( is_object ( $node ) || is_array ( $node ) ) ? xml2array ( $node ) : $node;
return $out;
}
?>
Douglas Marsh ¶
15 years ago
SimpleXML is really nice for loading/converting XML data into native PHP data structures. I was considering crude searching of SVG for the width/height and since it really is an XML file... I found a SUPER easy method for parsing out the information I wanted:
<?php
// putting incomplete SVG data inline for readability
$RawXML = <<< XML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg
xmlns:dc="http://www.example.com/dc"
xmlns:cc="http://www.example.com/cc"
xmlns:rdf="http://www.example.com/rdf"
xmlns:svg="http://www.example.com/svg"
xmlns="http://www.example.com/"
xmlns:sodipodi="http://www.example.com/sodipodi"
xmlns:inkscape="http://www.example.com/inkscape"
id="svg2"
sodipodi:version="0.32"
inkscape:version="0.46"
width="586.25"
height="743.75"
xml:space="preserve"
sodipodi:docname="some_svg_file.svg"
inkscape:output_extension="org.inkscape.output.svg.inkscape">
<!-- portions removed to keep this short -->
</svg>
XML;
$svg = new SimpleXMLElement($RawXML);
$height = $svg['height'];
$width = $svg['width'];
echo "The width x height is: ${width} x ${height} \n";
?>
daniel dot oconnor at gmail dot com ¶
18 years ago
SimpleXML handles namespaces, but it's not documented very well here at all.
If you wanted to parse, say, an open office manifest file or a piece of RDF/XML, you have to get elements and attributes by the namespace url.
Example:
<?php
function display($in) {
if (file_exists($in)) {
$xml = simplexml_load_file($in);
} else {
throw new Exception($in . " does not exist");
}
$manifest = $xml->children('http://openoffice.org/2001/manifest');
foreach ($manifest->xpath('//manifest:file-entry') as $file) {
foreach ($file->attributes('http://openoffice.org/2001/manifest') as $key => $value) {
print "Key:" . $key . "\n";
print "Value:" . $value . "\n";
}
}
}
?>
File: manifest.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE manifest:manifest PUBLIC "-//OpenOffice.org//DTD Manifest 1.0//EN" "Manifest.dtd">
<manifest:manifest xmlns:manifest="http://openoffice.org/2001/manifest">
<manifest:file-entry manifest:media-type="application/vnd.sun.xml.writer" manifest:full-path="/"/>
<manifest:file-entry manifest:media-type="application/vnd.sun.xml.ui.configuration" manifest:full-path="Configurations2/"/>
<manifest:file-entry manifest:media-type="application/binary" manifest:full-path="layout-cache"/>
<manifest:file-entry manifest:media-type="text/xml" manifest:full-path="content.xml"/>
<manifest:file-entry manifest:media-type="text/xml" manifest:full-path="styles.xml"/>
<manifest:file-entry manifest:media-type="text/xml" manifest:full-path="meta.xml"/>
<manifest:file-entry manifest:media-type="" manifest:full-path="Thumbnails/thumbnail.png"/>
<manifest:file-entry manifest:media-type="" manifest:full-path="Thumbnails/"/>
<manifest:file-entry manifest:media-type="text/xml" manifest:full-path="settings.xml"/>
</manifest:manifest>
onPHP5.com ¶
17 years ago
It does not say in the docs, but SimpleXML will convert all text into UTF-8, if the source XML declaration has another encoding. Eg, if the source has the following XML decl:
<?xml version="1.0" encoding="windows-1251" ?>
all the text in the resulting SimpleXMLElement will be in UTF-8 automatically.
Arnaud Bienvenu ¶
18 years ago
As of PHP 5.1.4, trying to iterate on a non-existent node will actually create that node.
<?
$xml = simplexml_load_string('<root></root>');
foreach($xml->b as $dummy);
echo $xml->asXML();
?>
Gives :
<?xml version="1.0"?>
<root><b/></root>
You might think it is a bug, but PHP developers seam to consider it as a feature : http://bugs.php.net/bug.php?id=39164
julien dot breiner at laposte dot net ¶
13 years ago
Merge two xml only with SimpleXML :
<?php
private function mergeXML(&$base, $add)
{
$new = $base->addChild($add->getName());
foreach ($add->attributes() as $a => $b) {
$new[$a] = $b;
}
foreach ($add->children() as $child) {
$this->mergeXML($new, $child);
}
}?>
Use : <?php mergeXML($xmlElement, simplexml_load_string($toMerge)) ?>
nelson_menezes at yahoo dot co dot uk ¶
19 years ago
Note that SimpleXML expects to both read and output XML in UTF-8 encoding. You'll need to add a line such as this at the top of your input XML file if it isn't saved in UTF-8 (adjust to whatever encoding used):
<?xml version="1.0" encoding="ISO-8859-1" ?>
On the output side of things, if you're not serving/handling UTF-8, you'll need to use utf8_decode() [red. but that will only work for ISO-8859-1, not other encodings]. Common mistake: http://bugs.php.net/bug.php?id=28154
k dot antczak at livedata dot pl ¶
13 years ago
A quick snippet which converts XML Object into array:
<?php
function xml2array ( $xmlObject, $out = array () )
{
foreach ( (array) $xmlObject as $index => $node )
$out[$index] = ( is_object ( $node ) ) ? xml2array ( $node ) : $node;
return $out;
}
?>
Have fun! ;-)
james dot ellis at gmail dot com ¶
16 years ago
While SimpleXML is a powerful tool, developers using it to process and handle large XML documents & strings should take into careful consideration its memory usage requirements.
SimpleXML requires the entire XML tree to be available prior to any processing actions on that tree -- this requires the entire tree to be in memory. Ok for a 40kb XML file but when dealing with > 100MB files you will see performance degradation, especially if you have a busy server.
An alternative to processing large XML files is the XMLReader class, which operates in streaming mode, of which an excellent tutorial is presented here:
http://www.ibm.com/developerworks/library/x-pullparsingphp.html
XML is an incredibly verbose format. If you are dealing with large data structures, especially in web services, do you you actually need to represent the data as an XML tree? - other serialisation formats such as JSON, Serialised PHP, Google Protocol Buffers (http://code.google.com/p/protobuf/) and even CSV can remarkably reduce processing time, bandwidth and load when dealing with large files. A 110MB XML file can become a 65MB CSV file, with the same data in it, simply because the data identifiers (tags) are only represented once in the entire document.
m0sh3 at hotmail dot com ¶
16 years ago
Be aware of quirks like this one:
<?php
$a = new SimpleXMLElement('<a><b/></a>');
$a->b = 'test & test';
$a->c = 'test & test';
print_r($a);
/*
OUTPUT:
SimpleXMLElement Object
(
[b] => test & test
[c] => test & test
)
*/
codje2 at lboro dot ac dot uk ¶
17 years ago
Sometimes it's nice to mix up data storage types. This is a very simple SQL to XML converter. Feed it a SQL query and it outputs the result in XML.
The first paramater should be a mysql_query result
(optional)The second is the xml name for each row (i.e the second depth of XML)
(optional)The third is the name of the XML document, the root name
<?php
$result=mysql_query("SELECT * FROM users");
sql_to_xml($result,"users","members");
function sql_to_xml($mysql_result,$row_name="row",$doc_name="root")
{
$xml= new SimpleXMLElement("<$doc_name></$doc_name>");
while($line=mysql_fetch_assoc($mysql_result))
{
$row=$xml->addChild($row_name);
foreach($line as $column => $value)
{
$row->$column="$value";
}
}
return $xml->asXML();
}
?>
karsten dot bruch at bms-verlage dot de ¶
17 years ago
When creating a new XML document and adding text with umlauts and such
<?php $SimpleXMLElement->asXML(); ?>
will silently NOT output any content with umlauts.
Use htmlentities () while adding Umlauts & co to solve the "problem"