PHP Programming - getElementById in PHP5

Author

getElementById in PHP5

mananvyas@gmail.com

2006-10-30, 7:04 pm

Hi,

I am working on PHP5 and all the xmldom related extensions are
installed and on properly.
I am trying to execute following code but some how not working.

$doc = new DomDocument();
$doc->validateOnParse = true;
$doc->load('abc.xml');
//xml file contains one element with this id
$elem = $doc->getElementById( 'eee' );

if(is_null($elem)) {
echo "<br>IT IS NULL";
}
else {
echo "<br>NOT NULL.";
}

The output shows me null every time...
Why is that?????

Thanks in advance
Manan Vyas

Andy Hassall

2006-10-30, 7:05 pm

On 30 Oct 2006 04:45:50 -0800, mananvyas@gmail.com wrote:

>I am working on PHP5 and all the xmldom related extensions are
>installed and on properly.
>I am trying to execute following code but some how not working.
>
>
> $doc = new DomDocument();
> $doc->validateOnParse = true;
> $doc->load('abc.xml');
> //xml file contains one element with this id
> $elem = $doc->getElementById( 'eee' );
>
> if(is_null($elem)) {
> echo "<br>IT IS NULL";
> }
> else {
> echo "<br>NOT NULL.";
> }
>
>The output shows me null every time...
>Why is that?????

The manual hints towards why:

"According to the DOM standard this requires a DTD which defines the attribute
ID to be of type ID. You need to validate your document with
DOMDocument->validate() or DOMDocument->validateOnParse before using this
function."

You've set validateOnParse, but you haven't posted the contents of abc.xml.

Does it include a DTD that defines ID?

There is a link in the user contributed notes to the following site that
explains all:

http://blog.bitflux.ch/wiki/GetElementById_Pitfalls

--
Andy Hassall :: andy@andyh.co.uk :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

Mans

2006-10-30, 7:05 pm

Hey Friend,

Its working now...THANKS A LOT FRIEND...
Again thanks for your help and reply.

Regards,
Manan Vyas

Andy Hassall wrote:

> On 30 Oct 2006 04:45:50 -0800, mananvyas@gmail.com wrote:
>
>
> The manual hints towards why:
>
> "According to the DOM standard this requires a DTD which defines the attribute
> ID to be of type ID. You need to validate your document with
> DOMDocument->validate() or DOMDocument->validateOnParse before using this
> function."
>
> You've set validateOnParse, but you haven't posted the contents of abc.xml.
>
> Does it include a DTD that defines ID?
>
> There is a link in the user contributed notes to the following site that
> explains all:
>
> http://blog.bitflux.ch/wiki/GetElementById_Pitfalls
>
> --
> Andy Hassall :: andy@andyh.co.uk :: http://www.andyh.co.uk
> http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

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