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<?php echo strtotime('now') - strtotime("2016-1-17 14:25:00"); ?>
Output for 5.6.28, 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
96
Output for 7.3.32 - 7.3.33, 8.0.13
-3504
Output for 7.0.6
10794640
Output for 7.0.5
6632827
Output for 7.0.4
4606480
Output for 7.0.3
5302976
Output for 7.0.2
5671010
Output for 7.0.1
5768370
Output for 7.0.0
6030746
Output for 5.6.21
9163303
Output for 5.6.20
7234173
Output for 5.6.19
4376684
Output for 5.6.18
5013796
Output for 5.6.17
5400915
Output for 5.6.16
6120136
Output for 5.6.15
6209512
Output for 5.6.14
7612453
Output for 5.6.13
7701189
Output for 5.6.12
8099024
Output for 5.6.11
8467771
Output for 5.6.10
8561723
Output for 5.6.9
8754197
Output for 5.6.8
8957389
Output for 5.5.35
10927576
Output for 5.5.34
7328666
Output for 5.5.33
4474186
Output for 5.5.32
5200914
Output for 5.5.31
5498884
Output for 5.5.30
6475392
Output for 5.5.29
7839067
Output for 5.5.28
8197395
Output for 5.5.27
8289643
Output for 5.5.26
8657812
Output for 5.5.25
8857405
Output for 5.5.24
11040883

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154.71 ms | 401 KiB | 179 Q