3v4l.org

run code in 150+ php & hhvm versions
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<?php print_r(strtotime("first day"));
Output for 5.6.28, 7.0.12 - 7.1.0
1372298063
Output for 7.0.6
1462367039
Output for 7.0.5
1459734065
Output for 7.0.4
1457704849
Output for 7.0.3
1458398373
Output for 7.0.2
1458765953
Output for 7.0.1
1458868276
Output for 7.0.0
1459131034
Output for hhvm-3.12.0
1459340380
Output for hhvm-3.10.0
1459448214
Output for 5.6.21
1462263336
Output for 5.6.20
1460335010
Output for 5.6.19
1457473509
Output for 5.6.18
1458110196
Output for 5.6.17
1458498919
Output for 5.6.16
1459220360
Output for 5.6.15
1459309958
Output for 5.6.14
1459662923
Output for 5.6.13
1460801178
Output for 5.6.12
1461198348
Output for 5.6.11
1461481297
Output for 5.6.10
1461660756
Output for 5.6.9
1461851920
Output for 5.6.8
1462054708
Output for 5.5.35
1464006357
Output for 5.5.34
1460429543
Output for 5.5.33
1457571015
Output for 5.5.32
1458295522
Output for 5.5.31
1458595214
Output for 5.5.30
1459575964
Output for 5.5.29
1460939122
Output for 5.5.28
1461296196
Output for 5.5.27
1461389935
Output for 5.5.26
1461756701
Output for 5.5.25
1461952805
Output for 5.5.24
1464138456
Output for 5.4.45
1456029320
Output for 5.4.43 - 5.4.44
1456029321
Output for 5.4.41 - 5.4.42
1456029322
Output for 5.4.39 - 5.4.40
1456029323
Output for 5.4.37 - 5.4.38
1456029324
Output for 5.4.34 - 5.4.36
1456029325
Output for 5.3.29, 5.4.31 - 5.4.32
1456029326
Output for 5.4.28 - 5.4.30
1456029327
Output for 5.4.25 - 5.4.27
1456029328
Output for 5.3.28, 5.4.21 - 5.4.24
1456029329
Output for 5.4.19 - 5.4.20
1456029330
Output for 5.3.25 - 5.3.27, 5.4.16 - 5.4.18
1456029331
Output for 5.3.22 - 5.3.24, 5.4.12 - 5.4.15
1456029332
Output for 5.3.18 - 5.3.21, 5.4.8 - 5.4.11
1456029333
Output for 5.3.14 - 5.3.17, 5.4.4 - 5.4.7
1456029334
Output for 5.3.11 - 5.3.13, 5.4.0 - 5.4.3
1456029335
Output for 5.2.17, 5.3.5 - 5.3.10
1456029336
Output for 5.2.13 - 5.2.16, 5.3.3 - 5.3.4
1456029337
Output for 5.3.2
1454301337
Output for 5.3.0 - 5.3.1
1454301338
Output for 5.2.8 - 5.2.12
1456029338
Output for 4.4.8 - 4.4.9, 5.2.2 - 5.2.7
1456029339
Output for 4.4.3 - 4.4.7, 5.1.5 - 5.2.1
1456029340
Output for 4.4.0 - 4.4.2, 5.0.5 - 5.1.4
1456029341
Output for 4.3.8 - 4.3.11, 5.0.3 - 5.0.4
1456029342
Output for 5.0.0 - 5.0.2
1456009200
Output for 4.3.0 - 4.3.7
1456029343