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function is not described

_upgrade_cron_array() WP 2.1.0

Upgrade a Cron info array.

This function upgrades the Cron info array to version 2.

No Hooks.

Return

Array. An upgraded Cron info array.

Usage

_upgrade_cron_array( $cron );
$cron(array) (required)
Cron info array from _get_cron_array().

Code of upgrade cron array: wp-includes/cron.php VER 5.1.1

<?php
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;
}