wordpress标签添加关键词、描述

显示

/* 添加input框 */
add_action( 'post_tag_add_form_fields', 'misha_add_term_fields' );
function misha_add_term_fields( $taxonomy ) {
    echo '<div class="form-field">
	<label for="tag-keywords">关键词</label>
	<input type="text" name="tag-keywords" id="tag-keywords" />
	<p>Field keywords may go here.</p>
	</div>';
    echo '<div class="form-field">
	<label for="tag-description">描述</label>
	<input type="text" name="tag-description" id="tag-description" />
	<p>Field description may go here.</p>
	</div>';
}

/* 编辑input框 */
add_action( 'post_tag_edit_form_fields', 'misha_edit_term_fields', 10, 2 );
function misha_edit_term_fields( $term, $taxonomy ) {
    $keywords_value = get_term_meta( $term->term_id, 'tag-keywords', true );
    echo '<tr class="form-field">
	<th>
		<label for="tag-keywords">关键词</label>
	</th>
	<td>
		<input name="tag-keywords" id="tag-keywords" type="text" value="' . esc_attr( $keywords_value ) .'" />
		<p class="description">Field description may go here.</p>
	</td>
	</tr>';
    $value = get_term_meta( $term->term_id, 'tag-description', true );
    echo '<tr class="form-field">
	<th>
		<label for="tag-description">描述</label>
	</th>
	<td>
		<input name="tag-description" id="tag-description" type="text" value="' . esc_attr( $value ) .'" />
		<p class="description">Field description may go here.</p>
	</td>
	</tr>';
}

/* 保存 */
add_action( 'created_post_tag', 'misha_save_term_fields' );
add_action( 'edited_post_tag', 'misha_save_term_fields' );
function misha_save_term_fields( $term_id ) {
    update_term_meta(
        $term_id,
        'tag-keywords',
        sanitize_text_field( $_POST[ 'tag-keywords' ] )
    );
    update_term_meta(
        $term_id,
        'tag-description',
        sanitize_text_field( $_POST[ 'tag-description' ] )
    );
}

使用

functions.php

function get_current_tag_id() {
    $current_tag = single_tag_title('', false);//获得当前TAG标签名称
    $tags = get_tags();//获得所有TAG标签信息的数组
    foreach($tags as $tag) {
        if($tag->name == $current_tag) return $tag->term_id; //获得当前TAG标签ID，其中term_id就是tag ID
    }
}

tag页面

<?php $str = get_term_meta(get_current_tag_id());echo $str['tag-keywords'][0]?>
<?php $str = get_term_meta(get_current_tag_id());echo $str['tag-description'][0]?>