I have used PHP with simplexml to parse RSS using standard elements before like <title> <pubDate> etc. But how would I parse something custom to the feed like <xCal:location> or <xCal:dtstart> that uses an xCal data element?
Something like $item->xCal:dtstart will error out. How would I collect this data element?
A sample of a feed like this: http://www.trumba.com/calendars/vd.rss?mixin=236393%2c236288
Try like this:
$feedUrl = 'http://www.trumba.com/calendars/vd.rss?mixin=236393%2c236288';
$rawFeed = file_get_contents($feedUrl);
$xml = new SimpleXmlElement($rawFeed);
$ns = $xml->getNamespaces(true);
//print_r($ns);
$xCal = $xml->channel->children($ns['xCal']);
echo ($xCal->version)."<br />";
foreach($xml->channel->item as $item)
{
//print_r($item);
$itemxTrumba=$item->children($ns['x-trumba']);
echo $itemxTrumba->masterid."<br />";
}
//print_r($xCal);
The "something custom" is an XML namespace. Search for existing answers regarding SimpleXML and namespaces.
Basically, what you need is the ->children() method: $item->children('xCal', true)->dtStart
Related
Given the php code:
$xml = <<<EOF
<articles>
<article>
This is a link
<link>Title</link>
with some text following it.
</article>
</articles>
EOF;
function traverse($xml) {
$result = "";
foreach($xml->children() as $x) {
if ($x->count()) {
$result .= traverse($x);
}
else {
$result .= $x;
}
}
return $result;
}
$parser = new SimpleXMLElement($xml);
traverse($parser);
I expected the function traverse() to return:
This is a link Title with some text following it.
However, it returns only:
Title
Is there a way to get the expected result using simpleXML (obviously for the purpose of consuming the data rather than just returning it as in this simple example)?
There might be ways to achieve what you want using only SimpleXML, but in this case, the simplest way to do it is to use DOM. The good news is if you're already using SimpleXML, you don't have to change anything as DOM and SimpleXML are basically interchangeable:
// either
$articles = simplexml_load_string($xml);
echo dom_import_simplexml($articles)->textContent;
// or
$dom = new DOMDocument;
$dom->loadXML($xml);
echo $dom->documentElement->textContent;
Assuming your task is to iterate over each <article/> and get its content, your code will look like
$articles = simplexml_load_string($xml);
foreach ($articles->article as $article)
{
$articleText = dom_import_simplexml($article)->textContent;
}
node->asXML();// It's the simple solution i think !!
So, the simple answer to my question was: Simplexml can't process this kind of XML. Use DomDocument instead.
This example shows how to traverse the entire XML. It seems that DomDocument will work with any XML whereas SimpleXML requires the XML to be simple.
function attrs($list) {
$result = "";
foreach ($list as $attr) {
$result .= " $attr->name='$attr->value'";
}
return $result;
}
function parseTree($xml) {
$result = "";
foreach ($xml->childNodes AS $item) {
if ($item->nodeType == 1) {
$result .= "<$item->nodeName" . attrs($item->attributes) . ">" . parseTree($item) . "</$item->nodeName>";
}
else {
$result .= $item->nodeValue;
}
}
return $result;
}
$xmlDoc = new DOMDocument();
$xmlDoc->loadXML($xml);
print parseTree($xmlDoc->documentElement);
You could also load the xml using simpleXML and then convert it to DOM using dom_import_simplexml() as Josh said. This would be useful, if you are using simpleXml to filter nodes for parsing, e.g. using XPath.
However, I don't actually use simpleXML, so for me that would be taking the long way around.
$simpleXml = new SimpleXMLElement($xml);
$xmlDom = dom_import_simplexml($simpleXml);
print parseTree($xmlDom);
Thank you for all the help!
You can get the text node of a DOM element with simplexml just by treating it like a string:
foreach($xml->children() as $x) {
$result .= "$x"
However, this prints out:
This is a link
with some text following it.
TitleTitle
..because the text node is treated as one block and there is no way to tell where the child fits in inside the text node. The child node is also added twice because of the other else {}, but you can just take that out.
Sorry if I didn't help much, but I don't think there's any way to find out where the child node fits in the text node unless the xml is consistent (but then, why not use tags). If you know what element you want to strip the text out of, strip_tags() will work great.
This has already been answered, but CASTING TO STRING ( i.e. $sString = (string) oSimpleXMLNode->TagName) always worked for me.
Try this:
$parser = new SimpleXMLElement($xml);
echo html_entity_decode(strip_tags($parser->asXML()));
That's pretty much equivalent to:
$parser = simplexml_load_string($xml);
echo dom_import_simplexml($parser)->textContent;
Like #tandu said, it's not possible, but if you can modify your XML, this will work:
$xml = <<<EOF
<articles>
<article>
This is a link
</article>
<link>Title</link>
<article>
with some text following it.
</article>
</articles>
I have an XML file that looks like the example on this site: http://msdn.microsoft.com/en-us/library/ee223815(v=sql.105).aspx
I am trying to parse the XML file using something like this:
$data = file_get_contents('http://mywebsite here');
$xml = new SimpleXMLElement($data);
$str = $xml->Author;
echo $str;
Unfortunately, this is not working, and I suspect it is due to the namespaces. I can dump the $xml using asXML() and it correctly shows the XML data.
I understand I need to insert namespaces somehow, but I'm not sure how. How do I parse this type of XML file?
All you need is to register the namespace
$sxe = new SimpleXMLElement($data);
$sxe->registerXPathNamespace("diffgr", "urn:schemas-microsoft-com:xml-diffgram-v1");
$data = $sxe->xpath("//diffgr:diffgram") ;
$data = $data[0];
echo "<pre>";
foreach($data->Results->RelevantResults as $result)
{
echo $result->Author , PHP_EOL ;
}
Output
Ms.Kim Abercrombie
Mr.GustavoAchong
Mr. Samuel N. Agcaoili
See Full code In Action
I have a string with xml-like data:
<header>Article header</header>
<description>This article is about you</description>
<text>some <b>html</b> text</text>
I need to parse it into variables/object/array "header", "description", "text".
What is the best way to do this? I tried $vars = simplexml_load_string($content), but it does not work, because it is not 100% pure xml (no <?xml...).
So, should I use preg_match? Is it the only way?
Your XML string looks like (though may or may not be) an XML document fragment. PHP can work with this using the DOMDocumentFragment class.
$doc = new DOMDocument;
$frag = $doc->createDocumentFragment();
$frag->appendXML($content);
$parsed = array();
foreach ($frag->childNodes as $element) {
if ($element->nodeType === XML_ELEMENT_NODE) {
$parsed[$element->nodeName] = $element->textContent;
}
}
echo $parsed['description']; // This article is about you
With a string like that, simlexml_load_string should work.
Because of the 3rd tag, if you try to get that it will fail, and not return the correct value (because there is a sub part within the tag.
Try something like this, which might work for you:
$xml = simplexml_load_string($content)
$text = $xml->text->asXML();
You should also take a look at this documentation: http://www.php.net/manual/en/simplexmlelement.asxml.php. They also do the same thing with the string. You might wanna use this option instead of simplexml_load_string too
$xml = new SimpleXMLElement($string);
I have an xml file that I need to parse through and get values. Below is a snippit of xml
<?xml version="1.0"?>
<mobile>
<userInfo>
</userInfo>
<CATALOG>
<s0>
<SUB0>
<DESCR>Paranormal Studies</DESCR>
<SUBJECT>147</SUBJECT>
</SUB0>
</s0>
<sA>
<SUB0>
<DESCR>Accounting</DESCR>
<SUBJECT>ACCT</SUBJECT>
</SUB0>
<SUB1>
<DESCR>Accounting</DESCR>
<SUBJECT>ACCTG</SUBJECT>
</SUB1>
<SUB2>
<DESCR>Anatomy</DESCR>
<SUBJECT>ANATOMY</SUBJECT>
</SUB2>
<SUB3>
<DESCR>Anthropology</DESCR>
<SUBJECT>ANTHRO</SUBJECT>
</SUB3>
<SUB4>
<DESCR>Art</DESCR>
<SUBJECT>ART</SUBJECT>
</SUB4>
<SUB5>
<DESCR>Art History</DESCR>
<SUBJECT>ARTHIST</SUBJECT>
</SUB5>
</sA>
So, I need to grab all the child elements of <sA> and then there are more elements called <sB> etc
But I do not know how to get all of the child elements with <sA>, <sB>, etc.
How about this:
$xmlstr = LoadTheXMLFromSomewhere();
$xml = new simplexml_load_string($xmlstr);
$result = $xml->xpath('//sA');
foreach ($result as $node){
//do something with node
}
PHP does have a nice class to access XML, which is called SimpleXml for a reason, consider heavily using that if your code is going to access only a part of the XML (aka query the xml). Also, consider doing queries using XPath, which is the best way to do it
Notice that I did the example with sA nodes only, but you can configure your code for other node types really easily.
Hope I can help!
you should look into simplexml_load_string() as I'm pretty sure it would make your life a lot easier. It returns a StdObject that you can use like so:
$xml = simplexml_load_string(<your huge xml string>);
foreach ($xml->hpt_mobile->CATALOG->sA as $value){
// do things with sA children
}
$xml = new DOMDocument();
$xml->load('path_to_xml');
$htp = $xml->getElementsByTagName('hpt_mobile')[0];
$catalog = $htp->getElementsByTagName('CATALOG')[0]
$nodes = $catalog->getElementsByTagName('sA')->childNodes;
Given the php code:
$xml = <<<EOF
<articles>
<article>
This is a link
<link>Title</link>
with some text following it.
</article>
</articles>
EOF;
function traverse($xml) {
$result = "";
foreach($xml->children() as $x) {
if ($x->count()) {
$result .= traverse($x);
}
else {
$result .= $x;
}
}
return $result;
}
$parser = new SimpleXMLElement($xml);
traverse($parser);
I expected the function traverse() to return:
This is a link Title with some text following it.
However, it returns only:
Title
Is there a way to get the expected result using simpleXML (obviously for the purpose of consuming the data rather than just returning it as in this simple example)?
There might be ways to achieve what you want using only SimpleXML, but in this case, the simplest way to do it is to use DOM. The good news is if you're already using SimpleXML, you don't have to change anything as DOM and SimpleXML are basically interchangeable:
// either
$articles = simplexml_load_string($xml);
echo dom_import_simplexml($articles)->textContent;
// or
$dom = new DOMDocument;
$dom->loadXML($xml);
echo $dom->documentElement->textContent;
Assuming your task is to iterate over each <article/> and get its content, your code will look like
$articles = simplexml_load_string($xml);
foreach ($articles->article as $article)
{
$articleText = dom_import_simplexml($article)->textContent;
}
node->asXML();// It's the simple solution i think !!
So, the simple answer to my question was: Simplexml can't process this kind of XML. Use DomDocument instead.
This example shows how to traverse the entire XML. It seems that DomDocument will work with any XML whereas SimpleXML requires the XML to be simple.
function attrs($list) {
$result = "";
foreach ($list as $attr) {
$result .= " $attr->name='$attr->value'";
}
return $result;
}
function parseTree($xml) {
$result = "";
foreach ($xml->childNodes AS $item) {
if ($item->nodeType == 1) {
$result .= "<$item->nodeName" . attrs($item->attributes) . ">" . parseTree($item) . "</$item->nodeName>";
}
else {
$result .= $item->nodeValue;
}
}
return $result;
}
$xmlDoc = new DOMDocument();
$xmlDoc->loadXML($xml);
print parseTree($xmlDoc->documentElement);
You could also load the xml using simpleXML and then convert it to DOM using dom_import_simplexml() as Josh said. This would be useful, if you are using simpleXml to filter nodes for parsing, e.g. using XPath.
However, I don't actually use simpleXML, so for me that would be taking the long way around.
$simpleXml = new SimpleXMLElement($xml);
$xmlDom = dom_import_simplexml($simpleXml);
print parseTree($xmlDom);
Thank you for all the help!
You can get the text node of a DOM element with simplexml just by treating it like a string:
foreach($xml->children() as $x) {
$result .= "$x"
However, this prints out:
This is a link
with some text following it.
TitleTitle
..because the text node is treated as one block and there is no way to tell where the child fits in inside the text node. The child node is also added twice because of the other else {}, but you can just take that out.
Sorry if I didn't help much, but I don't think there's any way to find out where the child node fits in the text node unless the xml is consistent (but then, why not use tags). If you know what element you want to strip the text out of, strip_tags() will work great.
This has already been answered, but CASTING TO STRING ( i.e. $sString = (string) oSimpleXMLNode->TagName) always worked for me.
Try this:
$parser = new SimpleXMLElement($xml);
echo html_entity_decode(strip_tags($parser->asXML()));
That's pretty much equivalent to:
$parser = simplexml_load_string($xml);
echo dom_import_simplexml($parser)->textContent;
Like #tandu said, it's not possible, but if you can modify your XML, this will work:
$xml = <<<EOF
<articles>
<article>
This is a link
</article>
<link>Title</link>
<article>
with some text following it.
</article>
</articles>