wp_ajax_hidden_columns() │ WP 3.1.0

Handles hidden columns via AJAX.

No Hooks.

Returns

null. Nothing (null).

Usage

wp_ajax_hidden_columns();

Changelog

Since 3.1.0 Introduced.

wp_ajax_hidden_columns() code WP 7.0

wp-admin/includes/ajax-actions.php 
function wp_ajax_hidden_columns() {
	check_ajax_referer( 'screen-options-nonce', 'screenoptionnonce' );
	$page = $_POST['page'] ?? '';

	if ( sanitize_key( $page ) !== $page ) {
		wp_die( 0 );
	}

	$user = wp_get_current_user();
	if ( ! $user ) {
		wp_die( -1 );
	}

	$hidden = ! empty( $_POST['hidden'] ) ? explode( ',', $_POST['hidden'] ) : array();
	update_user_meta( $user->ID, "manage{$page}columnshidden", $hidden );

	wp_die( 1 );
}