Php 在Wordpress中使用当前帖子ID获取下一个/上一个帖子ID

我想编写一个自定义的next/prev函数，以便在fancybox弹出窗口中动态显示帖子信息。因此，我需要使用PHP根据当前显示的帖子获取下一个和上一个帖子ID。我知道当前post ID是什么，我可以将其发送到函数ok，但我不知道如何使用该ID获取相邻ID

编辑：这是到目前为止我的代码（不起作用）

获取相邻的帖子（）

使用全局

$post

作为其参考点，因此您需要替换此：

$this_post = get_post($post_id);

为此：

global $post;
$post = get_post($post_id);

WordPress还提供了

get\u next\u post（）

和

get\u previous\u post（）

，您可以在此处使用这些参数，而不是在所有这些参数中使用

get\u nexted\u post（）

。以下是最终产品：

<?php
require_once("../../../wp-blog-header.php");

if (isset($_POST['data'])){
    $post_id = $_POST['data'];
}else{
    $post_id = "";
}
$wp_query->is_single = true;

global $post;
$post = get_post($post_id);

$previous_post = get_previous_post();
$next_post = get_next_post();

$post_id = $next_post->id;
$title = $next_post->post_title;

$dataset = array ( "postid"=>$post_id, "posttitle"=>$title );

//Because we want to use json, we have to place things in an array and encode it for json.
//This will give us a nice javascript object on the front side.

echo json_encode($dataset);

?>

---

我不确定您想在

$dataset

数组中使用哪些键来显示上一篇和下一篇文章的id和标题，所以我现在就不做了。

要让它工作，我必须更改

$next\u post->id到
$next\u post->ID，即大写
ID

我在index.php上的Wordpress中使用了它，如下所示–我在循环的顶部插入了这个：

<div class="work-post" id="<?php the_ID(); ?>">

这是我的代码，效果很好$post_id是当前的post id

function get_previous_post_id( $post_id ) {
    // Get a global post reference since get_adjacent_post() references it
    global $post;
    // Store the existing post object for later so we don't lose it
    $oldGlobal = $post;
    // Get the post object for the specified post and place it in the global variable
    $post = get_post( $post_id );
    // Get the post object for the previous post
    $previous_post = get_previous_post();
    // Reset our global object
    $post = $oldGlobal;
    if ( '' == $previous_post ) 
        return 0;
    return $previous_post->ID; 
} 

function get_next_post_id( $post_id ) {
    // Get a global post reference since get_adjacent_post() references it
    global $post;
    // Store the existing post object for later so we don't lose it
    $oldGlobal = $post;
    // Get the post object for the specified post and place it in the global variable
    $post = get_post( $post_id );
    // Get the post object for the next post
    $next_post = get_next_post();
    // Reset our global object
    $post = $oldGlobal;
    if ( '' == $next_post ) 
        return 0;
    return $next_post->ID; 
} 

然后调用函数。例如：

echo get_previous_post_id( $current_id );
echo get_next_post_id( $current_id );

祝你好运

function get_previous_post_id( $post_id ) {
    // Get a global post reference since get_adjacent_post() references it
    global $post;
    // Store the existing post object for later so we don't lose it
    $oldGlobal = $post;
    // Get the post object for the specified post and place it in the global variable
    $post = get_post( $post_id );
    // Get the post object for the previous post
    $previous_post = get_previous_post();
    // Reset our global object
    $post = $oldGlobal;
    if ( '' == $previous_post ) 
        return 0;
    return $previous_post->ID; 
} 

function get_next_post_id( $post_id ) {
    // Get a global post reference since get_adjacent_post() references it
    global $post;
    // Store the existing post object for later so we don't lose it
    $oldGlobal = $post;
    // Get the post object for the specified post and place it in the global variable
    $post = get_post( $post_id );
    // Get the post object for the next post
    $next_post = get_next_post();
    // Reset our global object
    $post = $oldGlobal;
    if ( '' == $next_post ) 
        return 0;
    return $next_post->ID; 
} 

echo get_previous_post_id( $current_id );
echo get_next_post_id( $current_id );