原生的wordpress程序中，新建的分类中是没有填写seo标题关键词和描述的，出于优化考虑，很多时候我们需要给分类添加独立的字段，使其可以独立添加title、description、keywords，也就是我们说的三大标签。

这样的方式既不会影响导航也不会影响栏目的链接，实现方法如下：

1、在主题文件目录创建一个seo.php的文件，将下面的代码复制到文件中并保存。

<?php

//给分类目录添加 SEO标题、关键词、描述

//添加页面 挂载字段

add_action( 'category_add_form_fields', 'category_term_field' );//分类

add_action( 'post_tag_add_form_fields', 'category_term_field' );//标签

function category_term_field() {

wp_nonce_field( basename( __FILE__ ), 'category_term_field_nonce' );

//wp_enqueue_script('dreamc_term_fields', get_template_directory_uri(). '/js/termmeta-upload.js');

echo '<div class="form-field category-term-field">';

echo '<label for="category-term-seo_title">SEO标题</label>';

echo '<input type="text" name="category_term_seo_title" id="category-term-seo_title" value="" />';

echo '</div>';

echo '<div class="form-field category-term-field">';

echo '<label for="category-term-seo_keywords">SEO关键词</label>';

echo '<textarea name="category_term_seo_keywords" id="category-term-seo_keywords"></textarea>';

echo '</div>';

echo '<div class="form-field category-term-field">';

echo '<label for="category-term-seo_description">SEO描述</label>';

echo '<textarea name="category_term_seo_description" id="category-term-seo_description"></textarea>';

echo '</div>';

}

//分类扩展信息 编辑界面

add_action( 'category_edit_form_fields', 'edit_category_term_field' );//分类

add_action( 'post_tag_edit_form_fields', 'edit_category_term_field' );//标签

function edit_category_term_field( $term ) {

//获取数据

$category_title = get_term_meta( $term->term_id, 'category_seo_title', true );

$category_keywords = get_term_meta( $term->term_id, 'category_seo_keywords', true );

$category_des = get_term_meta( $term->term_id, 'category_seo_des', true );

echo '<tr class="form-field category-term-field-wrap">';

echo '<th scope="row"><label for="category-term-title">SEO标题</label></th>';

echo '<td>';

echo wp_nonce_field( basename( __FILE__ ), 'category_term_field_nonce' );

echo '<input type="text" name="category_term_title" id="category-term-title" value="'.$category_title.'"/>';

echo '</td>';

echo '</tr>';

echo '<tr class="form-field category-term-field-wrap">';

echo '<th scope="row"><label for="category-term-keywords">SEO关键词</label></th>';

echo '<td>';

echo '<textarea name="category_term_keywords" id="category-term-keywords">'.$category_keywords.'</textarea>';

echo '</td>';

echo '</tr>';

echo '<tr class="form-field category-term-field-wrap">';

echo '<th scope="row"><label for="category-term-des">SEO描述</label></th>';

echo '<td>';

echo '<textarea name="category_term_des" id="category-term-des">'.$category_des.'</textarea>';

echo '</td>';

echo '</tr>';

}

//保存数据

add_action( 'create_category', 'save_category_term_field' );

add_action( 'edit_category', 'save_category_term_field' );//分类

add_action( 'create_post_tag', 'save_category_term_field' );

add_action( 'edit_post_tag', 'save_category_term_field' );//标签

function save_category_term_field( $term_id ) {

if ( ! isset( $_POST['category_term_field_nonce'] ) || ! wp_verify_nonce( $_POST['category_term_field_nonce'], basename( __FILE__ ) ) )

return;

//获取

$category_title = isset( $_POST['category_term_title'] ) ? $_POST['category_term_title'] : '';

$category_keywords = isset( $_POST['category_term_keywords'] ) ? $_POST['category_term_keywords'] : '';

$category_des = isset( $_POST['category_term_des'] ) ? $_POST['category_term_des'] : '';

//更新

if( '' === $category_title){delete_term_meta( $term_id, 'category_seo_title' );}else{update_term_meta( $term_id, 'category_seo_title', $category_title );}

if( '' === $category_keywords){delete_term_meta( $term_id, 'category_seo_keywords' );}else{update_term_meta( $term_id, 'category_seo_keywords', $category_keywords );}

if( '' === $category_des){delete_term_meta( $term_id, 'category_seo_des' );}else{update_term_meta( $term_id, 'category_seo_des', $category_des );}

}

;?>

2、然后打开该目录中的functions.php文件，加上如下代码：

//调用seo信息

include("seo.php");

3、最后在分类模板中使用如下代码调用相关字段

<title><?php echo get_term_meta( $cat, 'category_seo_title', true );?></title>

<meta name="keywords" content="<?php echo get_term_meta( $cat, 'category_seo_keywords', true );?>" />

<meta name="description" content="<?php echo get_term_meta( $cat, 'category_seo_des', true );?>" />

这样就实现了wordpress分类单独分类的seo标题关键词和描述了！