_set_cron_array() │ WP 2.1.0

Updates the cron option with the new cron array.

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.

Return

true|false|WP_Error. True if cron array updated. False or WP_Error on failure.

Usage

_set_cron_array( $cron, $wp_error );
$cron(array[]) (required)
Array of cron info arrays from _get_cron_array().
$wp_error(true|false)
Whether to return a WP_Error on failure.
Default: false

Changelog

Since 2.1.0 Introduced.
Since 5.1.0 Return value modified to outcome of update_option().
Since 5.7.0 The $wp_error parameter was added.

_set_cron_array() code WP 6.7.1

wp-includes/cron.php 
function _set_cron_array( $cron, $wp_error = false ) {
	if ( ! is_array( $cron ) ) {
		$cron = array();
	}

	$cron['version'] = 2;

	$result = update_option( 'cron', $cron, true );

	if ( $wp_error && ! $result ) {
		return new WP_Error(
			'could_not_set',
			__( 'The cron event list could not be saved.' )
		);
	}

	return $result;
}