How can PHP beginners correctly implement a formula to calculate the image number on each page of a gallery?

To calculate the image number on each page of a gallery, PHP beginners can use the formula: ($page_number - 1) * $images_per_page + $image_index. This formula takes into account the current page number, the number of images per page, and the index of the image on that page. By implementing this formula in their code, beginners can accurately determine the image number on each page of the gallery.

$page_number = 2; // Current page number
$images_per_page = 10; // Number of images per page
$image_index = 5; // Index of the image on the page

$image_number = ($page_number - 1) * $images_per_page + $image_index;
echo "Image number on page $page_number: $image_number";