我试图显示自定义帖子类型的父类别和子类别，它们由类别的第一个字母分隔
我所拥有的。
A.
Apples
B.
Bananas
C.
Coconuts
我想要什么
A.
Apples<br />
-Red<br />
-Green<br />
B.
Bananas
C.
Coconuts
这是我现在掌握的代码。我也需要它来显示子类别。提前感谢。
<?php
$list = \'\';
$args = array(
\'hide_empty\' => true, // Set this to true to hide terms with no posts
\'hierarchical\' => true,
\'pad_counts\' => false
);
$tags = get_terms(\'type\',$args);
$groups = array( );
if( $tags && is_array( $tags ) ) {
foreach( $tags as $tag ) {
$first_letter = strtoupper( $tag->name[0] );
$groups[ $first_letter ][] = $tag;
}
if( !empty( $groups ) ) {
$index_line = \'\';
foreach( $groups as $letter => $tags ) {
$list .= \'<h4><p id="\' . apply_filters( \'the_title\', $letter ) . \'"><strong>\'. apply_filters( \'the_title\', $letter ) .\'</strong></P></h4><hr><ul>\';
foreach( $tags as $tag ) {
$name = apply_filters( \'the_title\', $tag->name );
$list .= \'<li><a href="\' . get_term_link( $tag ) . \'" title="\' . sprintf(__(\'View all posts tagged with %s\', \'\'), $tag->name) . \'">\' . $tag->name . \' </a></li>\';
}
$list .= \'</ul>\';
}
$list .= \'\';
}
} else $list .= \'<p>Sorry, but no tags were found</p>\';
print ($index_line);
print ($list);
最合适的回答,由SO网友:simonthesorcerer 整理而成
您只需使用get_term_children() 作用
更改您的行：
foreach( $tags as $tag ) {
$name = apply_filters( \'the_title\', $tag->name );
$list .= \'<li><a href="\' . get_term_link( $tag ) . \'" title="\' . sprintf(__(\'View all posts tagged with %s\', \'\'), $tag->name) . \'">\' . $tag->name . \' </a></li>\';
}
。。。到
foreach( $tags as $tag ) {
$name = apply_filters( \'the_title\', $tag->name );
$list .= \'<li><a href="\' . get_term_link( $tag ) . \'" title="\' . sprintf(__(\'View all posts tagged with %s\', \'\'), $tag->name) . \'">\' . $tag->name . \' </a>\';
// show children in their own ul
if($children = get_term_children($tag->ID, \'type\')) {
$list .= \'<ul>\';
foreach($children as $child) {
$list .= \'<li><a href="\' . get_term_link( $child ) . \'" title="\' . sprintf(__(\'View all posts tagged with %s\', \'\'), $child->name) . \'">\' . $tag->name . \' </a></li>\';
}
$list .= \'</ul>\';
}
// close li after this one
$list .= \'</li>\';
}
（未经测试）
如果使用递归方法，可以使此方法更加漂亮；）但我觉得应该这样。
