打印上一篇文章的链接。

原型

previous_post( string $format = '%', string $previous = 'previous post: ', string $title = 'yes', string $in_same_cat = 'no', int $limitprev = 1, string $excluded_categories = '' )

参数

$format (string) (Optional)

$previous (string) (Optional)

$title (string) (Optional)

$in_same_cat (string) (Optional)

$limitprev (int) (Optional)

$excluded_categories (string) (Optional)

源文件

路径:wp-includes/deprecated.php

<?php
...
function previous_post($format='%', $previous='previous post: ', $title='yes', $in_same_cat='no', $limitprev=1, $excluded_categories='') {
	_deprecated_function( __FUNCTION__, '2.0.0', 'previous_post_link()' );
	if ( empty($in_same_cat) || 'no' == $in_same_cat )
		$in_same_cat = false;
	else
		$in_same_cat = true;
	$post = get_previous_post($in_same_cat, $excluded_categories);
	if ( !$post )
		return;
	$string = '<a href="'.get_permalink($post->ID).'">'.$previous;
	if ( 'yes' == $title )
		$string .= apply_filters('the_title', $post->post_title, $post->ID);
	$string .= '</a>';
	$format = str_replace('%', $string, $format);
	echo $format;
}
...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/previous_post/