Extract content from multiple pages of same website - php

Question

I have this script to extract data from multiple pages of the same website. There are some 120 pages.
Here is the code I'm using to get for a single page.
$html = file_get_contents('https://www.example.com/product?page=1');
$dom = new DOMDocument;
#$dom->loadHTML($html);
$links = $dom->getElementsByTagName('div');
foreach ($links as $link){
file_put_contents('products.txt', $link->getAttribute('data-product-name') .PHP_EOL, FILE_APPEND);
}
How can I do it for multiple pages? The links for that specific pages are incremental like the next page will be https://www.example.com/product?page=2 and so on. How can I do it without creating different files for each link?

Answer 1

What about this :
function extractContent($page)
{
$html = file_get_contents('https://www.example.com/product?page='.$page);
$dom = new DOMDocument;
#$dom->loadHTML($html);
$links = $dom->getElementsByTagName('div');
foreach ($links as $link) {
// skip empty attributes
if (empty($link->getAttribute('data-product-name'))) {
continue;
}
file_put_contents('products.txt', $link->getAttribute('data-product-name') .PHP_EOL, FILE_APPEND);
}
}
for ($i=1; $i<=120; $i++) {
extractContent($i);
}