3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo strtotime('first day of this month');
Output for 5.6.28, 7.0.14 - 7.1.0
1401625295
Output for 7.0.6
1462119282
Output for 7.0.5
1459517521
Output for 7.0.4
1456869746
Output for 7.0.3
1456871247
Output for 7.0.2
1456823409
Output for 7.0.1
1456822163
Output for 7.0.0
1456833244
Output for 5.6.21
1462127490
Output for 5.6.20
1459506737
Output for 5.6.19
1456860449
Output for 5.6.18
1456818690
Output for 5.6.17
1456801380
Output for 5.6.16
1456837030
Output for 5.6.15
1456839990
Output for 5.6.14
1459535284
Output for 5.6.13
1459538038
Output for 5.6.12
1459505680
Output for 5.6.11
1459527084
Output for 5.6.10
1459534705
Output for 5.6.9
1459469704
Output for 5.6.8
1459497971
Output for 5.5.35
1462086795
Output for 5.5.34
1459514861
Output for 5.5.33
1456823650
Output for 5.5.32
1456856157
Output for 5.5.31
1456811838
Output for 5.5.30
1459521348
Output for 5.5.29
1459502675
Output for 5.5.28
1459515923
Output for 5.5.27
1459521457
Output for 5.5.26
1459544404
Output for 5.5.25
1459485249
Output for 5.5.24
1462102470
Output for 5.4.45
1441073890
Output for 5.4.44
1441073887
Output for 5.4.43
1441073883
Output for 5.4.42
1435770492
Output for 5.4.41
1430456465
Output for 5.4.40
1430463976
Output for 5.4.39
1430463975
Output for 5.4.38
1422829323
Output for 5.4.36 - 5.4.37
1422770839
Output for 5.4.34 - 5.4.35
1414822256
Output for 5.4.31 - 5.4.32
1409544729
Output for 5.4.30
1409544727
Output for 5.4.11 - 5.4.29
1401625300
Output for 5.3.23 - 5.3.28, 5.4.0 - 5.4.10
1401625301
Output for 5.3.29
1409544728
Output for 5.3.8 - 5.3.22
1401625302
Output for 5.3.0 - 5.3.7
1401625303
Output for 5.1.0 - 5.2.17
Output for 4.3.0 - 5.0.5
-1