PHP dom getAttribute with HTML5 attributes

Question

How are we supposed to check the value for the following HTML5 attributes?

<input type="text" required />

Or this:

<video src="" autoplay></video>

This is the code I use:

$dom->loadHTML($html);
$xpath = new DOMXPath($dom);    
$result = $xpath->query('//input');

foreach($result as $item) var_dump($item->getAttribute('required'));

The required attribute may or may not be set, the result stays the same:

string(0) ""

If getAttribute would return null instead of an empty string when the attribute is not defined it would make more sense.

I am aware we can use something like required="required" but I can't be sure that the attribute is in that form since the code that gets parse may differ.

meder omuraliev · Accepted Answer · 2011-02-28 18:05:01Z

2

I think the rule is that if the attribute exists, then apply the action. So try hasAttribute('required')

answered Feb 28, 2011 at 18:05

meder omuraliev

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1 Comment

DADU Over a year ago

Great! This seems to work correctly. Why did I overlook that function?

Mr Coder · Accepted Answer · 2011-02-28 18:04:11Z

2

try

$item['required']

instead of

$item->getAttribute('required')

answered Feb 28, 2011 at 18:04

Mr Coder

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2 Comments

DADU Over a year ago

$item is an object so we can't treat it like an array.

Mr Coder Over a year ago

In php if you implement ArrayAccess then any object can be used as array . (Bassically __set , __get magic function ) simplexml is not exception to it

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