_maybe_update_themes() │ WP 2.7.0

Checks themes versions only after a duration of time.

This is for performance reasons to make sure that on the theme version checker is not run on every page load.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

null. Nothing (null).

Usage

_maybe_update_themes();

Changelog

Since 2.7.0 Introduced.

_maybe_update_themes() code WP 7.0

wp-includes/update.php 
function _maybe_update_themes() {
	$current = get_site_transient( 'update_themes' );

	if ( isset( $current->last_checked )
		&& 12 * HOUR_IN_SECONDS > ( time() - $current->last_checked )
	) {
		return;
	}

	wp_update_themes();
}