_upgrade_cron_array() WordPress Function

The upgrade_cron_array() function is used to upgrade the cron array to the new format. The new format is an associative array of arrays with the following keys: 'time', 'schedule', 'args', and 'interval'. The 'time' key is used to store the time when the event should run, the 'schedule' key is used to store the recurrence schedule for the event, the 'args' key is used to store the arguments for the event, and the 'interval' key is used to store the interval for the event.

_upgrade_cron_array( array $cron ) #

function _upgrade_cron_array( $cron ) {
	if ( isset( $cron['version'] ) && 2 == $cron['version'] ) {
		return $cron;
	}

	$new_cron = array();

	foreach ( (array) $cron as $timestamp => $hooks ) {
		foreach ( (array) $hooks as $hook => $args ) {
			$key                                     = md5( serialize( $args['args'] ) );
			$new_cron[ $timestamp ][ $hook ][ $key ] = $args;
		}
	}

	$new_cron['version'] = 2;
	update_option( 'cron', $new_cron );
	return $new_cron;
}