I'm new to PHP, with little practice of OOP, and I'm trying to extend
the DomDocument class (in DOM) with a method that runs an XPath
selection:
class ExtDomDocument extends DomDocument {
public function selectNodes($xpath) {
$processor = new DOMXPath($this);
return $processor->query($xpath);
}
}
This runs fine, but it seems better to me to have the DOMXPath object
instantiated in the constructor (so this is done only once and it can
be used by additional methods). The following code doesn't work but
I'd like to do something along those lines:
class ExtDomDocument extends DomDocument {
private $processor;
function __construct() {
parent::__construct();
$processor = new DOMXPath($this);
}
public function selectNodes($xpath) {
$processor = new DOMXPath($this);
return $processor->query($xpath);
}
}
I'll be grateful for your help.
Nicolas
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