WordPress有一个功能wp_get_referer, 它从http标头获取引用url。因此，如果您从一个类别存档转到一篇文章，那么该类别的名称通常会包含在该url中。这意味着您可以开始single.php 像这样：

$refer = wp_get_referer();
if (strpos($refer, \'category/cat1\') != false) {... do something ...}
elseif (strpos($refer, \'category/cat2\') != false) {... do something else ...}
else {... do a default thing ...}

<?php $categories = get_the_category( $post->ID ); ?>

$categories[0]-> term_id;

有关用法的信息，请参阅codex

正如Gaffen所说：“根据访问的类别更改帖子布局”

首先是主题中的类别模板页面（即category.php）

获取类别id并将其存储在WordPress Transient选项中。

global $wp_query;

//get category id (or name, slug) and store to the transient api
$categoryId = $wp_query->queried_object->cat_ID;
set_transient( \'category_id_visited\', $categoryId, 1 * HOUR_IN_SECONDS );

从瞬态中获取值，并相应地更改显示

if ( false === ( $category_id_visited = get_transient( \'category_id_visited\' ) ) ) {
    // this code runs when there is no valid transient set
    //do nothing for now
} else {
    echo \'You came by visiting category: \' . $category_id_visited;
    //delete transient if required, otherwise it will be expired automatically
    delete_transient( \'category_id_visited\' );
}

在你的单曲里。例如，可以使用php

if(has_category(\'layout-1\')) {
  // do layout-1-category stuff here
} elseif (has_category(\'layout-2\')) {
  // layout-2 stuff here
} else {
  // stuff for all the other styles/regular stuff
}

首次获取类别ID：

$cat_id = get_queried_object_id();

$cat_name = get_cat_name($cat_id)

if ($cat_name == \'Cat 1\') {
   // ... url = layout-1
} elseif ($cat_name == \'Cat 2\') {
   // ... url = layout-2
}