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<?php echo strtotime('-' . 0 . ' day');
Output for 5.1.3, 5.2.15, 5.3.0 - 5.3.2, 5.3.5 - 5.3.6, 5.3.8, 5.3.10, 5.3.12 - 5.3.15, 5.3.17, 5.3.26, 5.4.1 - 5.4.4, 5.4.6 - 5.4.7, 5.4.13, 5.4.15 - 5.4.19, 7.0.14 - 7.3.0rc4
1378991069
Output for 7.0.6
1462266543
Output for 7.0.5
1459633685
Output for 7.0.4
1457602281
Output for 7.0.3
1458295935
Output for 7.0.2
1458662979
Output for 7.0.1
1458765655
Output for 7.0.0
1459030351
Output for 5.6.21
1462163114
Output for 5.6.20
1460234931
Output for 5.6.19
1457372217
Output for 5.6.18
1458007636
Output for 5.6.17
1458397477
Output for 5.6.16
1459120199
Output for 5.6.15
1459209950
Output for 5.6.14
1459563736
Output for 5.6.13
1460701071
Output for 5.6.12
1461096620
Output for 5.6.11
1461380960
Output for 5.6.10
1461560086
Output for 5.6.9
1461750892
Output for 5.6.8
1461953087
Output for 5.5.35
1463904712
Output for 5.5.34
1460329821
Output for 5.5.33
1457469175
Output for 5.5.32
1458186072
Output for 5.5.31
1458493696
Output for 5.5.30
1459476097
Output for 5.5.29
1460838350
Output for 5.5.28
1461194906
Output for 5.5.27
1461289840
Output for 5.5.26
1461655405
Output for 5.5.25
1461851314
Output for 5.5.24
1464097880
Output for 5.4.45
1442783452
Output for 5.4.44
1442783448
Output for 5.4.43
1442783443
Output for 5.4.42
1435417544
Output for 5.4.41
1435417542
Output for 5.4.40
1431688369
Output for 5.4.39
1431688368
Output for 5.4.38
1425333295
Output for 5.4.35 - 5.4.37
1423457945
Output for 5.4.34
1423457944
Output for 5.4.32
1410250146
Output for 5.4.31
1410250139
Output for 5.4.29 - 5.4.30
1410250134
Output for 5.4.23, 5.4.28
1410250133
Output for 5.4.27
1410250143
Output for 5.4.26
1410250142
Output for 5.4.25
1410250141
Output for 5.4.24
1410250140
Output for 5.4.22
1410250131
Output for 5.4.21
1410250130
Output for 5.4.20
1410250129
Output for 4.3.1 - 4.4.9, 5.0.3 - 5.1.2, 5.1.4 - 5.2.14, 5.2.16 - 5.2.17, 5.3.3 - 5.3.4, 5.3.7, 5.3.9, 5.3.11, 5.3.16, 5.3.18 - 5.3.25, 5.3.27, 5.4.0, 5.4.5, 5.4.8 - 5.4.12, 5.4.14
1378991068
Output for 5.3.29
1410250135
Output for 5.3.28
1410250132
Output for 5.0.0 - 5.0.2
1378936800
Output for 4.3.0
1442783442