PHP HTML DomDocument getElementById problems

Question

A little new to PHP parsing here, but I can\'t seem to get PHP\'s DomDocument to return what is clearly an identifiable node. The HTML loaded will come from the \'net so ca

Answer 1

The Manual explains why:

For this function to work, you will need either to set some ID attributes with DOMElement->setIdAttribute() or a DTD which defines an attribute to be of type ID. In the later case, you will need to validate your document with DOMDocument->validate() or DOMDocument->validateOnParse before using this function.

By all means, go for valid HTML & provide a DTD.

Quick fixes:

1. Call $dom->validate(); and put up with the errors (or fix them), afterwards you can use $dom->getElementById(), regardless of the errors for some reason.
2. Use XPath if you don't feel like validing: $x = new DOMXPath($dom); $el = $x->query("//*[@id='bid']")->item(0);
3. Come to think of it: if you just set validateOnParse to true before loading the HTML, if would also work ;P

.

$dom = new DOMDocument();
$html ='
Hello World.
';
$dom->validateOnParse = true; //
     
 

        
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