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run code in 150+ php & hhvm versions
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<?php echo strtotime('1 hour ago');
Output for 5.6.28, 7.0.14 - 7.1.0
1412255714
Output for 7.0.6
1462259763
Output for 7.0.5
1459627401
Output for 7.0.4
1457595528
Output for 7.0.3
1458289100
Output for 7.0.2
1458656210
Output for 7.0.1
1458759185
Output for 7.0.0
1459023934
Output for 5.6.21
1462156556
Output for 5.6.20
1460228471
Output for 5.6.19
1457365589
Output for 5.6.18
1457999490
Output for 5.6.17
1458390735
Output for 5.6.16
1459113189
Output for 5.6.15
1459203469
Output for 5.6.14
1459557426
Output for 5.6.13
1460694679
Output for 5.6.12
1461089944
Output for 5.6.11
1461374480
Output for 5.6.10
1461553564
Output for 5.6.9
1461744301
Output for 5.6.8
1461946379
Output for 5.5.35
1463898206
Output for 5.5.34
1460323330
Output for 5.5.33
1457462608
Output for 5.5.32
1458177953
Output for 5.5.31
1458487065
Output for 5.5.30
1459469670
Output for 5.5.29
1460831898
Output for 5.5.28
1461188052
Output for 5.5.27
1461282755
Output for 5.5.26
1461648740
Output for 5.5.25
1461844251
Output for 5.5.24
1464030698
Output for 5.4.45
1447062662
Output for 5.4.44
1447062663
Output for 5.4.43
1447062664
Output for 5.4.41 - 5.4.42
1447062665
Output for 5.4.39 - 5.4.40
1447062666
Output for 5.4.36 - 5.4.38
1447062667
Output for 5.4.34 - 5.4.35
1447062668
Output for 5.3.29, 5.4.31 - 5.4.32
1447062669
Output for 5.4.28 - 5.4.30
1447062670
Output for 5.4.25 - 5.4.27
1447062671
Output for 5.3.28, 5.4.21 - 5.4.24
1447062672
Output for 5.4.18 - 5.4.20
1447062673
Output for 5.3.26 - 5.3.27, 5.4.15 - 5.4.17
1447062674
Output for 5.3.22 - 5.3.25, 5.4.12 - 5.4.14
1447062675
Output for 5.3.19 - 5.3.21, 5.4.9 - 5.4.11
1447062676
Output for 5.3.15 - 5.3.18, 5.4.6 - 5.4.8
1447062677
Output for 5.3.12 - 5.3.14, 5.4.2 - 5.4.5
1447062678
Output for 5.3.8 - 5.3.11, 5.4.0 - 5.4.1
1447062679
Output for 5.2.15 - 5.2.17, 5.3.4 - 5.3.7
1447062680
Output for 5.2.11 - 5.2.14, 5.3.1 - 5.3.3
1447062681
Output for 4.4.8 - 4.4.9, 5.2.6 - 5.2.10, 5.3.0
1447062682
Output for 4.4.5 - 4.4.7, 5.2.1 - 5.2.5
1447062683
Output for 4.4.2 - 4.4.4, 5.1.2 - 5.2.0
1447062684
Output for 4.3.10 - 4.4.1, 5.0.3 - 5.1.1
1447062685
Output for 5.0.0 - 5.0.2
1447020000
Output for 4.3.3 - 4.3.9
1447062686
Output for 4.3.0 - 4.3.2
1447062687