Wordpress 的 bootstrap4 两个分页函数

一：在主题 functions 文件 或者自定义目录并引入

<?php


function wp_bootstrap_4_pagination()
{

    if (is_singular()) {
        return;
    }

    global $wp_query;

    /** Check number of pages **/
    if ($wp_query->max_num_pages <= 1) {
        return;
    }

    $paged = get_query_var('paged') ? absint(get_query_var('paged')) : 1;
    $max = intval($wp_query->max_num_pages);

    /** Add current page to the array */
    if ($paged >= 1) {
        $links[] = $paged;
    }

    /** Add the pages around the current page to the array */
    if ($paged >= 3) {
        $links[] = $paged - 1;
        $links[] = $paged - 2;
    }

    if (($paged + 2) <= $max) {
        $links[] = $paged + 2;
        $links[] = $paged + 1;
    }

    echo '<div class="pagination-container"><ul class="pagination">' . "\n";

    /** Previous Post Link */
    if (get_previous_posts_link()) {
        printf('<li class="page-item">%s</li>' . "\n", get_previous_posts_link());
    }

    /** Link to first page, plus ellipses if necessary */
    if (!in_array(1, $links)) {
        $class = 1 == $paged ? ' class="page-item active"' : ' class="page-item"';

        printf('<li%s><a class="page-link" href="%s">%s</a></li>' . "\n", $class, esc_url(get_pagenum_link(1)), '1');

        if (!in_array(2, $links)) {
            echo '<li>…</li>';
        }

    }

    /** Link to current page, plus 2 pages in either direction if necessary */
    sort($links);
    foreach ((array) $links as $link) {
        $class = $paged == $link ? ' class="page-item active"' : ' class="page-item"';
        printf('<li%s><a class="page-link" href="%s">%s</a></li>' . "\n", $class, esc_url(get_pagenum_link($link)), $link);
    }

    /** Link to last page, plus ellipses if necessary */
    if (!in_array($max, $links)) {
        if (!in_array($max - 1, $links)) {
            echo '<li>…</li>' . "\n";
        }

        $class = $paged == $max ? ' class="page-item active"' : ' class="page-item"';
        printf('<li%s><a class="page-link" href="%s">%s</a></li>' . "\n", $class, esc_url(get_pagenum_link($max)), $max);
    }

    /** Next Post Link */
    if (get_next_posts_link()) {
        printf('<li class="page-item">%s</li>' . "\n", get_next_posts_link());
    }

    echo '</ul></div>' . "\n";

}

/*
 * Custom Attribute for links
 */

add_filter('next_posts_link_attributes', 'wp_boostrap_4_pagination_posts_link_attributes');
add_filter('previous_posts_link_attributes', 'wp_boostrap_4_pagination_posts_link_attributes');

function wp_boostrap_4_pagination_posts_link_attributes()
{
    return 'class="page-link"';
}

在模板中使用

<?php wp_bootstrap_4_pagination();?>

二：

function ribs_pagenavi($before = '', $after = '', $p = 1)

{

	if (is_singular()) return;

	global $wp_query, $paged;

	$max_page = $wp_query->max_num_pages;

	if ($max_page <= 1) return;

	if (empty($paged)) $paged = 1;

	echo $before . '<ul class="pagination mb-0">' . "\n";

	if ($paged == 1) echo '<li class="page-item disable prev"><a class="page-link">上一页</a></li>';

	if ($paged > 1) echo "<li class='page-item prev'><a class='page-link' href='", esc_html(get_pagenum_link($paged - 1)), "' title='上一页'>上一页</a></li>";

	if ($paged > $p + 1) p_link(1, '首页');

	if ($paged > $p + 2) echo '<li class="page-item disable"><a class="page-link">...</a></li>';

	for ($i = $paged - $p; $i <= $paged + $p; $i++) {

		if ($i > 0 && $i <= $max_page) $i == $paged ? print "<li class='page-item active'><span class='page-link'>{$i}<span class='sr-only'>(current)</span></span></li>" : p_link($i);
	}
	
	if ($paged < $max_page - $p - 1) echo '<li class="page-item disable"><a class="page-link">...</a></li>';

	if ($paged < $max_page - $p) p_link($max_page, '尾页');


	if ($paged < $max_page) echo "<li class='page-item next'><a class='page-link' href='", esc_html(get_pagenum_link($paged + 1)), "' title='下一页'>下一页</a></li>";

	if ($paged == $max_page) echo '<li class="page-item disable next"><a class="page-link">下一页</a></li>';

	echo '</ul>' . $after . "\n";

}

function p_link($i, $title = '', $linktype = '')

{

	if ($title == '') $title = "第 {$i} 页";

	if ($linktype == '') {

	$linktext = $i;

} else {

	$linktext = $linktype;

}

	echo "<li class='page-item'><a class='page-link' href='", esc_html(get_pagenum_link($i)), "' title='{$title}'>{$linktext}</a></li>";

}

在模板中使用

<?php  ribs_pagenavi('<nav class="post-pagenavi my-5">', '</nav>', 1); ?>