3v4l.org

run code in 300+ PHP versions simultaneously
<?php function incrementWithSwitch($date, $invert) { $timezone = $date->getTimezone(); $date = $date->setTimezone(new DateTimeZone('UTC')); $date = $date->modify(($invert ? '-' : '+') . '1 hour'); $date = $date->setTimezone($timezone); $date = $date->setTime((int)$date->format('H'), 0); return $date; } function incrementWithoutSwitch($date, $invert) { $date = $date->modify(($invert ? '-' : '+') . '1 hour'); return $date; } $tz = new \DateTimeZone("Europe/London"); $dtWith = \DateTimeImmutable::createFromFormat("!Y-m-d H:i:s", "2021-03-28 04:00:00", $tz); $dtWithout = $dtWith; $invert = true; for ($i = 0; $i < 4; $i++) { print "\nRound {$i}:"; $dtWith = incrementWithSwitch($dtWith, $invert); $dtWithout = incrementWithoutSwitch($dtWithout, $invert); print "With switch: ". $dtWith->format(\DateTime::RFC3339); print " :: Without switch: ". $dtWithout->format(\DateTime::RFC3339); } print "\n---\n"; $dtWith = \DateTimeImmutable::createFromFormat("!Y-m-d H:i:s", "2021-03-28 00:00:00"); $dtWithout = $dtWith; $invert = false; for ($i = 0; $i < 4; $i++) { print "\nRound {$i}:"; $dtWith = incrementWithSwitch($dtWith, $invert); $dtWithout = incrementWithoutSwitch($dtWithout, $invert); print "With switch: ". $dtWith->format(\DateTime::RFC3339); print " :: Without switch: ". $dtWithout->format(\DateTime::RFC3339); }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0040.01116.63
8.3.50.0070.01116.65
8.3.40.0120.00618.93
8.3.30.0130.00618.79
8.3.20.0000.00724.18
8.3.10.0000.00824.66
8.3.00.0080.00026.16
8.2.180.0110.00725.92
8.2.170.0150.00019.21
8.2.160.0100.00322.96
8.2.150.0050.00225.66
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0040.00426.35
8.2.110.0030.00620.91
8.2.100.0030.00918.03
8.2.90.0060.00317.86
8.2.80.0000.00919.02
8.2.70.0030.00717.88
8.2.60.0000.00818.05
8.2.50.0040.00418.05
8.2.40.0000.01218.39
8.2.30.0080.00018.14
8.2.20.0070.00018.08
8.2.10.0040.00419.39
8.2.00.0020.00519.52
8.1.280.0120.00625.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00622.13
8.1.230.0030.00921.03
8.1.220.0040.00417.77
8.1.210.0040.00418.77
8.1.200.0060.00317.60
8.1.190.0060.00317.48
8.1.180.0000.00818.10
8.1.170.0000.00918.84
8.1.160.0000.00719.13
8.1.150.0000.00819.04
8.1.140.0050.00218.98
8.1.130.0000.00820.14
8.1.120.0000.00817.66
8.1.110.0060.00317.74
8.1.100.0000.00917.64
8.1.90.0070.00017.69
8.1.80.0050.00217.79
8.1.70.0000.00917.63
8.1.60.0060.00317.69
8.1.50.0040.00417.76
8.1.40.0040.00417.62
8.1.30.0030.00617.83
8.1.20.0040.00417.87
8.1.10.0060.00317.71
8.1.00.0100.00017.80
8.0.300.0040.00418.99
8.0.290.0000.00817.00
8.0.280.0000.00718.54
8.0.270.0040.00418.25
8.0.260.0000.00718.64
8.0.250.0060.00317.30
8.0.240.0000.00817.35
8.0.230.0000.00817.26
8.0.220.0000.00817.12
8.0.210.0030.00317.23
8.0.200.0050.00317.15
8.0.190.0030.00517.25
8.0.180.0000.00717.15
8.0.170.0000.00917.27
8.0.160.0040.00417.25
8.0.150.0050.00317.14
8.0.140.0040.00417.22
8.0.130.0030.00313.66
8.0.120.0000.00717.17
8.0.110.0080.00017.29
8.0.100.0030.00517.25
8.0.90.0090.00017.07
8.0.80.0070.01117.21
8.0.70.0020.00517.09
8.0.60.0040.00417.03
8.0.50.0000.00817.10
8.0.30.0090.01217.11
8.0.20.0120.00917.22
8.0.10.0070.01417.38
8.0.00.0250.01517.31
7.4.330.0050.00015.55
7.4.320.0070.00016.79
7.4.300.0030.00316.79
7.4.290.0000.00816.62
7.4.280.0040.00416.78
7.4.270.0000.00716.77
7.4.260.0030.00313.60
7.4.250.0070.00016.81
7.4.240.0030.00316.79
7.4.230.0030.00316.78
7.4.220.0040.00316.85
7.4.210.0070.00916.77
7.4.200.0000.00716.89
7.4.160.0120.00916.84
7.4.150.0070.01316.77
7.4.140.0060.01316.63
7.4.130.0250.02516.64
7.4.120.0070.00716.73
7.4.110.0030.01116.92
7.4.100.0040.01016.76
7.4.90.0000.01416.76
7.4.80.0060.00916.59
7.4.70.0110.00416.89
7.4.60.0070.00716.75
7.4.50.0040.01116.58
7.4.40.0060.00916.64
7.4.30.0060.00916.61
7.4.20.0110.00316.71
7.4.10.0070.00716.76
7.4.00.0090.00616.65
7.3.330.0030.00316.58
7.3.320.0070.00013.71
7.3.310.0020.00516.66
7.3.300.0070.00016.70
7.3.290.0090.01016.67
7.3.280.0130.00616.68
7.3.270.0100.01016.63
7.3.260.0070.00716.75
7.3.250.0090.00616.66
7.3.240.0030.01016.63
7.3.230.0030.01316.73
7.3.220.0100.00316.57
7.3.210.0110.00316.61
7.3.200.0030.01216.57
7.3.190.0040.01016.60
7.3.180.0100.00316.69
7.3.170.0030.01016.57
7.3.160.0040.01116.55
7.3.150.0090.00616.61
7.3.140.0210.00016.63
7.3.130.0090.00616.63
7.3.120.0030.01116.63
7.3.110.0090.00916.58
7.3.100.0000.01516.54
7.3.90.0100.00916.82
7.3.80.0060.00916.59
7.3.70.0070.00716.70
7.3.60.0070.00716.71
7.3.50.0060.01216.75
7.3.40.0000.01416.71
7.3.30.0100.00716.76
7.3.20.0060.00916.82
7.3.10.0040.01116.74
7.3.00.0110.00716.73

preferences:
64.03 ms | 400 KiB | 5 Q