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run code in 200+ php & hhvm versions
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<?php $t = microtime(true); var_dump('YmdHis', $t);
Output for 7.2.0
string(6) "YmdHis" float(1396879381.0051)
Output for 5.3.2, 5.3.5, 5.3.28, 7.1.7
string(6) "YmdHis" float(1396879381.0027)
Output for 7.1.5 - 7.1.6
string(6) "YmdHis" float(1396879381.0123)
Output for 7.1.0
string(6) "YmdHis" float(1396879381.0061)
Output for 5.3.12, 7.0.20
string(6) "YmdHis" float(1396879381.0025)
Output for 7.0.14
string(6) "YmdHis" float(1396879381.0038)
Output for 7.0.6
string(6) "YmdHis" float(1462227423.7205)
Output for 7.0.5
string(6) "YmdHis" float(1459597870.9841)
Output for 7.0.4
string(6) "YmdHis" float(1457560006.8693)
Output for 7.0.3
string(6) "YmdHis" float(1458252677.1802)
Output for 7.0.2
string(6) "YmdHis" float(1458550462.9358)
Output for 7.0.1
string(6) "YmdHis" float(1458721996.3948)
Output for 7.0.0
string(6) "YmdHis" float(1458992409.3961)
Output for 5.6.28
string(6) "YmdHis" float(1396879381.0045)
Output for 5.6.21
string(6) "YmdHis" float(1462123375.7251)
Output for 5.6.20
string(6) "YmdHis" float(1460185633.8802)
Output for 5.6.19
string(6) "YmdHis" float(1457291332.2356)
Output for 5.6.18
string(6) "YmdHis" float(1457939316.18)
Output for 5.6.17
string(6) "YmdHis" float(1458355628.3797)
Output for 5.6.16
string(6) "YmdHis" float(1459081413.7733)
Output for 5.6.15
string(6) "YmdHis" float(1459171293.1315)
Output for 5.6.14
string(6) "YmdHis" float(1459526729.5962)
Output for 5.6.13
string(6) "YmdHis" float(1460664134.9934)
Output for 5.6.12
string(6) "YmdHis" float(1461056727.6874)
Output for 5.6.11
string(6) "YmdHis" float(1461342249.2658)
Output for 5.6.10
string(6) "YmdHis" float(1461520926.7165)
Output for 5.6.9
string(6) "YmdHis" float(1461711974.8353)
Output for 5.6.8
string(6) "YmdHis" float(1461912038.8461)
Output for 5.6.7
string(6) "YmdHis" float(1464106848.4879)
Output for 5.5.35
string(6) "YmdHis" float(1463862945.41)
Output for 5.5.34
string(6) "YmdHis" float(1460292091.9797)
Output for 5.5.33
string(6) "YmdHis" float(1457427209.2894)
Output for 5.5.32
string(6) "YmdHis" float(1458064663.0519)
Output for 5.5.31
string(6) "YmdHis" float(1458452494.9421)
Output for 5.5.30
string(6) "YmdHis" float(1459438074.0889)
Output for 5.5.29
string(6) "YmdHis" float(1460801049.4984)
Output for 5.5.28
string(6) "YmdHis" float(1461154467.2139)
Output for 5.5.27
string(6) "YmdHis" float(1461250487.3454)
Output for 5.5.26
string(6) "YmdHis" float(1461615372.869)
Output for 5.5.25
string(6) "YmdHis" float(1461810185.7912)
Output for 5.5.24
string(6) "YmdHis" float(1462010592.0161)
Output for 5.4.45
string(6) "YmdHis" float(1441970040.3466)
Output for 5.4.44
string(6) "YmdHis" float(1441970037.9567)
Output for 5.4.43
string(6) "YmdHis" float(1437234748.5337)
Output for 5.4.42
string(6) "YmdHis" float(1436350501.5015)
Output for 5.4.41
string(6) "YmdHis" float(1432600413.4314)
Output for 5.4.40
string(6) "YmdHis" float(1430503400.5253)
Output for 5.4.39
string(6) "YmdHis" float(1430503399.593)
Output for 5.4.38
string(6) "YmdHis" float(1425133926.1985)
Output for 5.4.37
string(6) "YmdHis" float(1423094217.3122)
Output for 5.4.36
string(6) "YmdHis" float(1423094216.9949)
Output for 5.4.35
string(6) "YmdHis" float(1416058991.4215)
Output for 5.4.34
string(6) "YmdHis" float(1416058990.9648)
Output for 5.4.32
string(6) "YmdHis" float(1409369549.2099)
Output for 5.4.31
string(6) "YmdHis" float(1409369545.7895)
Output for 5.4.30
string(6) "YmdHis" float(1409369542.1358)
Output for 5.4.29
string(6) "YmdHis" float(1409369541.8401)
Output for 5.4.28
string(6) "YmdHis" float(1409369541.2373)
Output for 5.4.27
string(6) "YmdHis" float(1396879381.0064)
Output for 5.4.26
string(6) "YmdHis" float(1396879381.0111)
Output for 5.4.21, 5.4.25
string(6) "YmdHis" float(1396879381.006)
Output for 5.4.24
string(6) "YmdHis" float(1396879381.0041)
Output for 5.4.23
string(6) "YmdHis" float(1396879381.0047)
Output for 5.4.17, 5.4.22
string(6) "YmdHis" float(1396879381.0043)
Output for 5.4.20
string(6) "YmdHis" float(1396879381.0109)
Output for 5.4.19
string(6) "YmdHis" float(1396879381.0076)
Output for 5.4.18
string(6) "YmdHis" float(1396879381.004)
Output for 5.4.16
string(6) "YmdHis" float(1396879381.0062)
Output for 5.4.15
string(6) "YmdHis" float(1396879381.0063)
Output for 5.3.22, 5.4.0, 5.4.8, 5.4.14
string(6) "YmdHis" float(1396879381.0035)
Output for 5.2.1, 5.3.15 - 5.3.16, 5.3.27, 5.4.7, 5.4.13
string(6) "YmdHis" float(1396879381.0024)
Output for 5.1.2, 5.3.1, 5.3.10, 5.3.13, 5.3.25, 5.4.9, 5.4.11 - 5.4.12
string(6) "YmdHis" float(1396879381.0022)
Output for 5.4.3, 5.4.10
string(6) "YmdHis" float(1396879381.0037)
Output for 5.4.6
string(6) "YmdHis" float(1396879381.003)
Output for 5.1.6 - 5.2.0, 5.2.9, 5.2.12, 5.2.17, 5.3.4, 5.3.6, 5.3.11, 5.3.17, 5.3.20 - 5.3.21, 5.4.2, 5.4.5
string(6) "YmdHis" float(1396879381.0023)
Output for 5.3.8, 5.4.4
string(6) "YmdHis" float(1396879381.0031)
Output for 5.2.4, 5.2.13, 5.2.15, 5.3.24, 5.4.1
string(6) "YmdHis" float(1396879381.0026)
Output for 5.3.29
string(6) "YmdHis" float(1409369542.737)
Output for 5.3.0, 5.3.3, 5.3.9, 5.3.26
string(6) "YmdHis" float(1396879381.0032)
Output for 5.2.14, 5.3.18, 5.3.23
string(6) "YmdHis" float(1396879381.0034)
Output for 5.3.14, 5.3.19
string(6) "YmdHis" float(1396879381.0021)
Output for 5.3.7
string(6) "YmdHis" float(1396879381.0036)
Output for 5.2.5, 5.2.16
string(6) "YmdHis" float(1396879381.0018)
Output for 5.1.4, 5.2.7, 5.2.10 - 5.2.11
string(6) "YmdHis" float(1396879381.0019)
Output for 5.2.8
string(6) "YmdHis" float(1396879381.0028)
Output for 5.2.3, 5.2.6
string(6) "YmdHis" float(1396879381.0017)
Output for 5.1.5, 5.2.2
string(6) "YmdHis" float(1396879381.0016)
Output for 5.1.3
string(6) "YmdHis" float(1396879381.0015)
Output for 5.1.1
string(6) "YmdHis" float(1396879381.0013)
Output for 5.1.0
string(6) "YmdHis" float(1396879381.0042)
Output for 5.0.5
string(6) "YmdHis" float(1396879381.0009)
Output for 5.0.4
string(6) "YmdHis" float(1396879381.0006)
Output for 5.0.1, 5.0.3
string(6) "YmdHis" float(1396879381.0007)
Output for 5.0.2
string(6) "YmdHis" float(1396879381.0008)
Output for 5.0.0
string(6) "YmdHis" float(1396879381.0005)
Output for 4.4.9
string(6) "YmdHis" string(21) "0.00013100 1396879381"
Output for 4.4.8
string(6) "YmdHis" string(21) "0.00012700 1396879381"
Output for 4.3.5, 4.4.7
string(6) "YmdHis" string(21) "0.00017000 1396879381"
Output for 4.4.6
string(6) "YmdHis" string(21) "0.00014500 1396879381"
Output for 4.3.3, 4.4.5
string(6) "YmdHis" string(21) "0.00010700 1396879381"
Output for 4.4.4
string(6) "YmdHis" string(21) "0.00016200 1396879381"
Output for 4.4.3
string(6) "YmdHis" string(21) "0.00011600 1396879381"
Output for 4.4.2
string(6) "YmdHis" string(21) "0.00013200 1396879381"
Output for 4.4.1
string(6) "YmdHis" string(21) "0.00013600 1396879381"
Output for 4.3.8, 4.4.0
string(6) "YmdHis" string(21) "0.00012500 1396879381"
Output for 4.3.11
string(6) "YmdHis" string(21) "0.00019600 1396879381"
Output for 4.3.10
string(6) "YmdHis" string(21) "0.00010600 1396879381"
Output for 4.3.9
string(6) "YmdHis" string(21) "0.00009600 1396879381"
Output for 4.3.4, 4.3.7
string(6) "YmdHis" string(21) "0.00015600 1396879381"
Output for 4.3.6
string(6) "YmdHis" string(21) "0.00013500 1396879381"
Output for 4.3.2
string(6) "YmdHis" string(21) "0.00019800 1396879381"
Output for 4.3.1
string(6) "YmdHis" string(21) "0.00016000 1396879381"
Output for 4.3.0
string(6) "YmdHis" string(21) "0.61358200 1441970035"