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run code in 300+ PHP versions simultaneously
<?php var_dump(strtotime('0001-01-01T00:00:00')); var_dump(date('Y-m-d', strtotime('0001-01-01T00:00:00'))); exit;
Output for 5.2.6 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(-62135597972) string(10) "0001-01-01"
Output for 7.3.32 - 7.3.33, 7.4.26, 8.0.13
int(-62135596800) string(10) "0001-01-01"
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.5
bool(false) string(10) "1970-01-01"
Output for 5.0.0 - 5.0.5
int(978303600) string(10) "2001-01-01"
Output for 4.3.5 - 4.3.11, 4.4.0 - 4.4.9
int(978332400) string(10) "2001-01-01"
Output for 4.3.0 - 4.3.4
int(978282000) string(10) "2000-12-31"

preferences:
214.63 ms | 401 KiB | 354 Q