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<?php $x1 = strtotime('00-00-00 00:00:00'); $x2 = strtotime('0000-00-00 00:00:00'); echo date (DATE_RFC2822, $x1)."\n"; echo date (DATE_RFC2822, $x2)."\n"; echo date (DATE_RFC2822, 0)."\n";

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55.23 ms | 402 KiB | 5 Q