<?php $str = '123-12-123'; preg_match('/\d{3}\-\d(\d\-\d{3}|)/', $str, $matches); var_dump($matches); $str = '1-1-1'; preg_match('/\d{3}\-\d{2}\-\d{3}/', $str, $matches); var_dump($matches);
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Value for `_results` contains invalid data `array`