manage_posts_columns filter-hook . WP 1.5.0

Filters the columns displayed in the Posts list table.

Usage

add_filter( 'manage_posts_columns', 'filter_function_name_4020', 10, 2 );
function filter_function_name_4020( $post_columns, $post_type ){
	// filter...

	return $post_columns;
}

$post_columns(string[])

An associative array of column headings.

$post_type(string)

The post type slug.

Where the hook is called

$posts_columns = apply_filters( 'manage_posts_columns', $posts_columns, $post_type );

Where the hook is used (in WP core)