Add a Custom Column to the WordPress Posts List

You can add your own column to the list of posts in the dashboard. This example adds a Words column with the number of words of each post. It needs two hooks: one to add the column title, and one to print the value for each row.

<?php
// 1. Add the column after the title
add_filter( 'manage_posts_columns', function ( $columns ) {
	$new = array();
	foreach ( $columns as $key => $label ) {
		$new[ $key ] = $label;
		if ( 'title' === $key ) {
			$new['tc_words'] = 'Words';
		}
	}
	return $new;
} );

// 2. Print the value of each row
add_action( 'manage_posts_custom_column', function ( $column, $post_id ) {
	if ( 'tc_words' === $column ) {
		echo (int) str_word_count( wp_strip_all_tags( get_post_field( 'post_content', $post_id ) ) );
	}
}, 10, 2 );

Test it

The list shows the values of the new column: 5 for our new post and 15 for the sample post “Hello world!”. To make the column sortable, add the filter manage_edit-post_sortable_columns and handle the order in pre_get_posts. For a custom post type use manage_{post_type}_posts_columns.

• Previous Code

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