if ( empty( $doing_wp_cron ) ) {
if ( empty( $_GET[ 'doing_wp_cron' ] ) ) {
// Called from external script/job. Try setting a lock.
if ( empty( $doing_wp_cron ) ) {
if ( empty( $_GET[ 'doing_wp_cron' ] ) ) {
// Called from external script/job. Try setting a lock.
set_transient( 'doing_cron', $doing_wp_cron );
} else {
$doing_wp_cron = $_GET[ 'doing_wp_cron' ];
set_transient( 'doing_cron', $doing_wp_cron );
} else {
$doing_wp_cron = $_GET[ 'doing_wp_cron' ];