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<?php var_dump(date('YmdHis', $_SERVER['REQUEST_TIME']));
Output for 5.1.0 - 5.1.6, 5.2.0 - 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
string(14) "20160613145730"
Output for 7.3.32 - 7.3.33, 8.0.13
string(14) "20160613125730"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
Notice: Undefined index: REQUEST_TIME in /in/7jA2A on line 3 string(14) "19700101010000"

preferences:
222.49 ms | 402 KiB | 385 Q