I've never really used the DOM parser before and now I have a question.
How would I go about extracting the URL from this markup:
<files>
<file path="http://www.thesite.com/download/eysjkss.zip" title="File Name" />
</files>
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3 Answers
Using simpleXML:
$xml = new SimpleXMLElement($xmlstr);
echo $xml->file['path']."\n";
Output:
http://www.thesite.com/download/eysjkss.zip
3 Comments
mellowsoon
Just be careful. The value of $xml->file['path'] isn't a string. It's an instance of SimpleXMLElement.
Alex Jasmin
Indeed. It can cause problems when comparing the value to another string but you can cast this value to a string beforehand
(string)$xml->file['path']
Belgin Fish
yeah but it's still an efficient way of doing it that I didn't know about, I still +1'ed your answer.
To do it with DOM you do
$dom = new DOMDocument;
$dom->load( 'file.xml' );
foreach( $dom->getElementsByTagName( 'file' ) as $file ) {
echo $file->getAttribute( 'path' );
}
You can also do it with XPath:
$dom = new DOMDocument;
$dom->load( 'file.xml' );
$xPath = new DOMXPath( $dom );
foreach( $xPath->evaluate( '/files/file/@path' ) as $path ) {
echo $path->nodeValue;
}
Or as a string value directly:
$dom = new DOMDocument;
$dom->load( 'file.xml' );
$xPath = new DOMXPath( $dom );
echo $xPath->evaluate( 'string(/files/file/@path)' );
You can fetch individual nodes also by traversing the DOM manually
$dom = new DOMDocument;
$dom->preserveWhiteSpace = FALSE;
$dom->load( 'file.xml' );
echo $dom->documentElement->firstChild->getAttribute( 'path' );
Marking this CW, because this has been answered before multiple times (just with different elements), including me, but I am too lazy to find the duplicate.
Comments
you can use PHP Simple HTML DOM Parser,this is a php library。http://simplehtmldom.sourceforge.net/
3 Comments
Phil
Why introduce a 3rd party library when the built-in features are more than adequate for this task?
Sam
It is like jquery,Very convenient
