为城市创建自定义分类法，然后使用get_the_terms() 在图像URL中显示术语slug。

可供替代的

如果您只想要最后一个slug，那么可以使用PHP。将此放置在文件的最顶部get_header() :

<?php
    /* Grab the link. */
    $link = $_SERVER[\'PHP_SELF\'];
    /* Separate the url. */
    $array = explode( \'/\', $link );
    /* Count your way backwards. */
    $last_slug = count( $array ) - 2;
    $the_city = $array[$last_slug];
?>

OR

<?php
    /* Grab the link. */
    $link = $_SERVER[\'REQUEST_URI\'];
    /* Separate the url. */
    $array = explode( \'/\', $link );
    /* Grab the second to last element in the array. */
    $the_city = prev( $array );
?>

USAGE: Use the following for your image tag:

<img src="<?php echo bloginfo(\'url\'); ?>/wp-content/uploads/cities/<?php echo $the_city; ?>-140x140.jpg" alt=" " />

尝试此功能：

function misha_get_last_cat_slug() {

    $categories = get_the_category();
        $last_category = $categories[0];

        foreach($categories as $category) {
            if($category->parent == $last_category->cat_ID ) {
                $last_category = $category;
            }
        }
        return $last_category->slug;

}

<img src="<?php echo bloginfo(\'url\'); ?>/wp-content/uploads/cities/<?php echo misha_get_last_cat_slug() ?>-140x140.jpg" alt=" " />