WordPress Bootstrap Pagination

functions.php

<?php

class BootstrapPagination {
	public static function render() {
	    global $wp_query;
	    $current = max(1, absint(get_query_var('paged')));
	    $pagination = paginate_links(array(
		   'base' => str_replace(PHP_INT_MAX, '%#%', esc_url(get_pagenum_link(PHP_INT_MAX))),
		   'format' => '?paged=%#%',
		   'current' => $current,
		   'total' => $wp_query->max_num_pages,
		   'type' => 'array',
		   'prev_text' => '&laquo;',
		   'next_text' => '&raquo;',
	    ));
 
	    if (!empty($pagination)) {
		   $output = '<nav aria-label="Page navigation">
		   <ul class="pagination">';
		   foreach ($pagination as $key => $page_link) {
			  $output .= '<li class="page-link' . (strpos($page_link, ' current') !== false ? ' active' : '') . '">' . $page_link . '</li>';
		   }
		   $output .= '</ul></nav>';
		   return apply_filters('sa_bootstrap_paginate_links', $output);
	    }
 
	    return '';
	}
 }


// echo BootstrapPagination::render();