Add ID column in admin tables

add_action( 'admin_init', function () {

// Get all public post types

	$post_types = get_post_types( array(), 'names' );

	function wpcode_add_post_id_column( $columns ) {

		$columns['wpcode_post_id'] = 'ID'; // 'ID' is the column title

		return $columns;

	}

	function wpcode_show_post_id_column_data( $column, $post_id ) {

		if ( 'wpcode_post_id' === $column ) {

			echo '<code>' . absint( $post_id ) . '</code>';

		}

	}

	foreach ( $post_types as $post_type ) {

		// Add new column to the posts list

		add_filter( "manage_{$post_type}_posts_columns", 'wpcode_add_post_id_column' );

		// Fill the new column with the post ID

		add_action( "manage_{$post_type}_posts_custom_column", 'wpcode_show_post_id_column_data', 10, 2 );

	}

} );