3v4l.org

run code in 200+ php & hhvm versions
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<?php echo strtotime('now'); - strtotime("2016-01-17 13:36:18"); echo strtotime('now'); ?>
based on Zkatc
Output for 5.6.28, 7.0.20 - 7.2.0
14530378921453037892
Output for 7.0.6
14638317421463831742
Output for 7.0.5
14596699291459669929
Output for 7.0.4
14576435821457643582
Output for 7.0.3
14583400781458340078
Output for 7.0.2
14587081121458708112
Output for 7.0.1
14588054721458805472
Output for 7.0.0
14590678481459067848
Output for 5.6.21
14622004051462200405
Output for 5.6.20
14602712751460271275
Output for 5.6.19
14574137861457413786
Output for 5.6.18
14580508981458050898
Output for 5.6.17
14584380171458438017
Output for 5.6.16
14591572381459157238
Output for 5.6.15
14592466141459246614
Output for 5.6.14
14606495551460649555
Output for 5.6.13
14607382911460738291
Output for 5.6.12
14611361261461136126
Output for 5.6.11
14615048731461504873
Output for 5.6.10
14615988251461598825
Output for 5.6.9
14617912991461791299
Output for 5.6.8
14619944911461994491
Output for 5.5.35
14639646781463964678
Output for 5.5.34
14603657681460365768
Output for 5.5.33
14575112871457511287
Output for 5.5.32
14582380161458238016
Output for 5.5.31
14585359861458535986
Output for 5.5.30
14595124941459512494
Output for 5.5.29
14608761681460876168
Output for 5.5.28
14612344971461234497
Output for 5.5.27
14613267451461326745
Output for 5.5.26
14616949141461694914
Output for 5.5.25
14618945071461894507
Output for 5.5.24
14640779871464077987
Output for 5.4.44 - 5.4.45
14530378951453037895
Output for 5.4.41 - 5.4.43
14530378961453037896
Output for 5.4.39 - 5.4.40
14530378971453037897
Output for 5.4.35 - 5.4.38
14530378981453037898
Output for 5.3.29, 5.4.31 - 5.4.34
14530378991453037899
Output for 5.4.26 - 5.4.30
14530379001453037900
Output for 5.3.28, 5.4.21 - 5.4.25
14530379011453037901
Output for 5.3.26 - 5.3.27, 5.4.16 - 5.4.20
14530379021453037902
Output for 5.3.22 - 5.3.25, 5.4.12 - 5.4.15
14530379031453037903