How to set selector in php-html-parser?

Question

PHP

There is a library https://github.com/paquettg/php-html-parser/
The search for an html block with the desired id is searched like this:

$dom = new Dom;
$dom->loadFromFile('tests/big.html');
$contents = $dom->find('#block-id');

We have html code:

<div id="project1"></div>
<div id="project2"></div>
<div id="project3"></div>
<div id="project4"></div>

How to iterate over blocks in a loop, how to pass a selector? The code below doesn't work:

for($i = 0; $i < 5; $i++){
$contents = $dom->find('#project' . $i);
}

If set explicitly, in the form $contents = $dom->find('#project1' ), then it searches.

Answer 1

Maybe the problem is in the index which is from scratch?