Accessing Node element in xml using Xpath

Question

I'm uploading xml file and accessing values in a php class. Everything is going smooth but when i try to access $middle_of_month value I have a debug error called

"Call to undefined method DOMNodeList::getElementsByTagName()"

Here's how xml looks like

...
<Fdr>
  <MiddleOfMonth>
      <Data Value="0" MonthNumber="1" />
      ...

I get the other tags correct I verified with debug.

$fdr             = $key->getElementsByTagName(tag_constants::TAG_FDR);
$middle_of_month = $fdr->getElementsByTagName(tag_constants::TAG_MIDDLE_OF_MONTH);

I have the error in $middle_of_month line. I debugged like 2 hours and still couldn't figure out what's wrong. Any help would be appreciated

Edit :

tag_constants::TAG_FDR -> Fdr
tag_constants::TAG_MIDDLE_OF_MONTH ->MiddleOfMonth

Edit 2 :

$middle_of_month = $fdr->item(0)->getElementsByTagName(tag_constants::TAG_MIDDLE_OF_MONTH);

seems to solve the problem

should TAG_MIDDLE_OF_MONTH ->MiddleOfMont be TAG_MIDDLE_OF_MONTH ->MiddleOfMonth? May be you just mistyped? — ITemius
– ITemius, Commented Sep 18, 2013 at 6:41
Sorry, i mistyped here, in code it's correct. I editted here — FreshPro
– FreshPro, Commented Sep 18, 2013 at 6:45
And I added a control to see if $fdr is null or not and it's not null — FreshPro
– FreshPro, Commented Sep 18, 2013 at 6:49

Telic · Accepted Answer · 2013-09-18 06:52:59Z

2

getElementsByTagName() returns a NodeList, and as the error implies, NodeLists do not in turn have this method (only Elements and Documents do).

You will need to pick an item from $fdr to run getElementsByTagName() on; perhaps like:

$fdr->item(0)->getElementsByTagName(tag_constants::TAG_MIDDLE_OF_MONTH);

answered Sep 18, 2013 at 6:52

Telic

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