how to add a custom attributes with PHP Simple HTML DOM Parser - php

Question

I am working with a project that require the use of PHP Simple HTML Dom Parser, and I need a way to add a custom attribute to a number of elements based on class name.
I am able to loop through the elements with a foreach loop, and it would be easy to set a standard attribute such as href, but I can't find a way to add a custom attribute.
The closest I can guess is something like:
foreach($html -> find(".myelems") as $element) {
$element->myattr="customvalue";
}
but this doesn't work.
I have seen a number of other questions on similar topics, but they all suggest using an alternative method for parsing html (domDocument etc.). In my case this is not an option, as I must use Simple HTML DOM Parser.

Answer 1

Did you try it? Try this example (Sample: adding data tags).
include 'simple_html_dom.php';
$html_string = '
<style>.myelems{color:green}</style>
<div>
<p class="myelems">text inside 1</p>
<p class="myelems">text inside 2</p>
<p class="myelems">text inside 3</p>
<p>simple text 1</p>
<p>simple text 2</p>
</div>
';
$html = str_get_html($html_string);
foreach($html->find('div p[class="myelems"]') as $key => $p_tags) {
$p_tags->{'data-index'} = $key;
}
echo htmlentities($html);
Output:
<style>.myelems{color:green}</style>
<div>
<p class="myelems" data-index="0">text inside 1</p>
<p class="myelems" data-index="1">text inside 2</p>
<p class="myelems" data-index="2">text inside 3</p>
<p>simple text 1</p>
<p>simple text 2</p>
</div>

Answer 2

Well, I think it's too old post but still i think it will help somebody like me :)
So in my case I added custom attribute to an image tag
$markup = file_get_contents('pathtohtmlfile');
//Create a new DOM document
$dom = new DOMDocument;
//Parse the HTML. The # is used to suppress any parsing errors
//that will be thrown if the $html string isn't valid XHTML.
#$dom->loadHTML($markup);
//Get all images tags
$imgs = $dom->getElementsByTagName('img');
//Iterate over the extracted images
foreach ($imgs as $img)
{
$img->setAttribute('customAttr', 'customAttrVal');
}