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run code in 200+ php & hhvm versions
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<?php $orderNumber = '002086S023Y9'; if (preg_match('/(.*[A-Z])[0-9a-z]$/', $orderNumber, $matches) === 0) { echo $orderNumber; } echo $matches[1];
Output for 4.3.0 - 7.2.0
002086S023Y