php pagination , wordpress pagination

Php pagination

	<?php
				$total_pages = $product_data->max_num_pages;
				$current_page = (isset($_GET['page'])) ? $_GET['page'] : 1;
				if ($current_page == 1) {
					$prev_page = false;
				} else {
					$prev_page = $current_page - 1;
				}

				if ($current_page == $total_pages) {
					$next_page = false;
				} else {
					$next_page = $current_page + 1;
				}
				$page_prev_array = [];
				$page_next_array = [];
				for ($i = 1; $i <= $total_pages; $i++) {
					if ($current_page == $i) {
						array_push($page_prev_array, $i);
					} elseif ((0 <= ($current_page - $i)) && (($current_page - $i) < 3)) {
						array_push($page_prev_array, $i);
					} elseif ((0 < ($i - $current_page)) && (($i - $current_page) < 4)) {
						array_push($page_next_array, $i);
					}
				}
				if ($total_pages > 8) {
					array_push($page_prev_array, '...');
				}
				$final_array = array_merge($page_prev_array, $page_next_array);
				// var_dump($final_array);
				?>
				<style>
					.page-item.disabled {
						pointer-events: none;
						cursor: default;
					}
				</style>
				<nav aria-label="Page navigation ">
					<ul class="pagination">
						<?php if ($total_pages != 1) { ?>
							<?php if ($prev_page != false) { ?>
								<li class="page-item"><a class="page-link bg-primary" href="?page=<?php echo $prev_page; ?>">Previous</a></li>
							<?php }  ?>
							<?php
							foreach ($final_array as $paginate) { ?>
								<li class="page-item"><a class="page-link <?php echo ($current_page == $paginate) ? 'current-page-paginate-active' : ''; ?>" href="<?php echo ($paginate != '...') ? '?page=' . $paginate : ''; ?>"><?php echo $paginate; ?></a></li>
							<?php } ?>
							<?php if ($next_page != false) { ?>
								<li class="page-item"><a class="page-link bg-primary" href="?page=<?php echo $next_page; ?>">Next</a></li>
							<?php }  ?>
						<?php }  ?>
					</ul>
				</nav>