通过分类名获取分类ID 描述 译文 按名称检索类别编号。
描述
按名称检索类别编号。
用法
<?php get_cat_ID( $cat_name ) ?>参数
$cat_name
(string) (可选) Default is ‘General‘ and can be any category name.
默认值: ‘General’
返回值
(integer if 0, string if ID)
0 if failure and ID of category on success.
示例
/* ———————————-
* wordpress函数
* ———————————- */
<?php
$category_id = get_cat_ID(‘Category Name’);
<!— Start the Loop. —>
<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<!— Test if the current post is in category “Category Name”. —>
<!— If it is, the div box is given the CSS class “post-cat-special”. —>
<!— Otherwise, the div box is given the CSS class “post”. —>
<?php if ( in_category($category_id) ) { ?>
<div class=“post-cat-special”>
<?php } else { ?>
<div class=“post”>
<?php } ?>
</div>
<!— Stop The Loop (but note the “else:” – see next line). —>
<?php endwhile; else: ?>
<!— The very first “if” tested to see if there were any Posts to —>
<!— display. This “else” part tells what do if there weren‘t any. —>
<p>Sorry, no posts matched your criteria.</p>
<!— REALLY stop The Loop. —>
<?php endif; ?>历史
添加于 版本: 1.0.0
源文件
get_cat_ID() 函数的代码位于 wp-includes/category.php.
/* ———————————-
* wordpress函数
* ———————————- */
/**
* Retrieve the ID of a category from its name.
*
* @since 1.0.0
*
* @param string $cat_name Category name.
* @return int 0, if failure and ID of category on success.
*/
function get_cat_ID( $cat_name ) {
$cat = get_term_by( ‘name’, $cat_name, ‘category’ );
if ( $cat )
return $cat->term_id;
return 0;
}