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<?php $str = '05/21/2018 ghijkl 06/12/2018 mnopqrst'; $result = preg_split('@(\b\d{1,2}/\d{1,2}/\d{4}\b)@', $str, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); var_dump($result);

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145.51 ms | 405 KiB | 5 Q