有时我们需要查看某篇文章或者分类的ID，需要将鼠标放在文章或者分类名称上，然后查看浏览器状态栏上链接中的数字才能获得ID号，不够直观，可以将下面的代码添加到当前主题 functions.php 文件中，之后会在后台文章、分类等列表后面直接显示ID号：

WordPress后台直接显示文章、页面、分类、标签和用户等ID号

// Prepend the new column to the columns array

function ssid_column($cols) {

$cols[‘ssid’] = ‘ID’;

return $cols;

}

// Echo the ID for the new column

function ssid_value($column_name, $id) {

if ($column_name == ‘ssid’)

echo $id;

}

function ssid_return_value($value, $column_name, $id) {

if ($column_name == ‘ssid’)

$value = $id;

return $value;

}

// Output CSS for width of new column

function ssid_css() {

?>

<style type=”text/css”>

#ssid { width: 50px; } /* Simply Show IDs */

</style>

<?php

}

// Actions/Filters for various tables and the css output

function ssid_add() {

add_action(‘admin_head’, ‘ssid_css’);

add_filter(‘manage_posts_columns’, ‘ssid_column’);

add_action(‘manage_posts_custom_column’, ‘ssid_value’, 10, 2);

add_filter(‘manage_pages_columns’, ‘ssid_column’);

add_action(‘manage_pages_custom_column’, ‘ssid_value’, 10, 2);

add_filter(‘manage_media_columns’, ‘ssid_column’);

add_action(‘manage_media_custom_column’, ‘ssid_value’, 10, 2);

add_filter(‘manage_link-manager_columns’, ‘ssid_column’);

add_action(‘manage_link_custom_column’, ‘ssid_value’, 10, 2);

add_action(‘manage_edit-link-categories_columns’, ‘ssid_column’);

add_filter(‘manage_link_categories_custom_column’, ‘ssid_return_value’, 10, 3);

foreach ( get_taxonomies() as $taxonomy ) {

add_action(“manage_edit-${taxonomy}_columns”, ‘ssid_column’);

add_filter(“manage_${taxonomy}_custom_column”, ‘ssid_return_value’, 10, 3);

}

add_action(‘manage_users_columns’, ‘ssid_column’);

add_filter(‘manage_users_custom_column’, ‘ssid_return_value’, 10, 3);

add_action(‘manage_edit-comments_columns’, ‘ssid_column’);

add_action(‘manage_comments_custom_column’, ‘ssid_value’, 10, 2);

}

add_action(‘admin_init’, ‘ssid_add’);