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"); $dtWithout = $dtWith; $invert = true; for ($i = 0; $i < 3; $i++) { print "\nRound {$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 < 3; $i++) { print "\nRound {$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)
8.3.40.0140.00718.96
8.3.30.0070.00718.96
8.3.20.0080.00024.18
8.3.10.0040.00424.66
8.3.00.0040.00426.16
8.2.170.0040.01119.08
8.2.160.0100.00722.96
8.2.150.0080.00025.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00626.16
8.2.110.0080.00422.39
8.2.100.0110.00018.15
8.2.90.0000.00919.38
8.2.80.0060.00318.41
8.2.70.0030.00618.00
8.2.60.0040.00418.18
8.2.50.0000.00818.05
8.2.40.0030.00520.00
8.2.30.0040.00418.28
8.2.20.0000.00818.03
8.2.10.0040.00419.52
8.2.00.0000.00719.52
8.1.270.0120.00624.66
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0030.00623.98
8.1.230.0040.00717.83
8.1.220.0030.00617.79
8.1.210.0080.00018.77
8.1.200.0030.00617.60
8.1.190.0080.00417.60
8.1.180.0000.00818.10
8.1.170.0080.00018.75
8.1.160.0050.00219.17
8.1.150.0000.00718.95
8.1.140.0000.00819.00
8.1.130.0000.00720.14
8.1.120.0000.00817.72
8.1.110.0040.00417.78
8.1.100.0000.00717.77
8.1.90.0070.00017.64
8.1.80.0030.00617.78
8.1.70.0040.00417.72
8.1.60.0030.00617.79
8.1.50.0000.00817.76
8.1.40.0030.00517.57
8.1.30.0040.00417.89
8.1.20.0060.00317.77
8.1.10.0000.00817.68
8.1.00.0080.00017.71
8.0.300.0040.00418.77
8.0.290.0060.00616.98
8.0.280.0050.00318.68
8.0.270.0060.00318.33
8.0.260.0000.00618.67
8.0.250.0060.00317.22
8.0.240.0080.00017.15
8.0.230.0030.00717.19
8.0.220.0040.00417.26
8.0.210.0000.00817.21
8.0.200.0000.00717.32
8.0.190.0000.00817.25
8.0.180.0000.00717.22
8.0.170.0060.00317.13
8.0.160.0080.00017.18
8.0.150.0000.00717.25
8.0.140.0000.00717.12
8.0.130.0030.00313.54
8.0.120.0040.00417.18
8.0.110.0080.00017.09
8.0.100.0000.00817.04
8.0.90.0070.00317.18
8.0.80.0090.00517.20
8.0.70.0000.00817.11
8.0.60.0050.00217.23
8.0.50.0040.00417.02
8.0.30.0090.01317.19
8.0.20.0120.00917.32
8.0.10.0030.01317.40
8.0.00.0120.00317.23
7.4.330.0020.00215.55
7.4.320.0030.00316.79
7.4.300.0060.00016.82
7.4.290.0070.00316.62
7.4.280.0040.00416.77
7.4.270.0070.00016.90
7.4.260.0060.00013.48
7.4.250.0000.00816.84
7.4.240.0030.00316.85
7.4.230.0050.00316.77
7.4.220.0000.00716.55
7.4.210.0110.00616.77
7.4.200.0000.00716.85
7.4.160.0130.00716.78
7.4.150.0060.00916.82
7.4.140.0000.01416.76
7.4.130.0120.00316.87
7.4.120.0050.01116.76
7.4.110.0090.00616.72
7.4.100.0200.00016.82
7.4.90.0110.00716.82
7.4.80.0030.01716.82
7.4.70.0090.00916.83
7.4.60.0120.00416.67
7.4.50.0120.00816.64
7.4.40.0090.00616.61
7.4.30.0070.00716.67
7.4.20.0000.01516.75
7.4.10.0130.00616.81
7.4.00.0000.01516.77
7.3.330.0000.00816.72
7.3.320.0000.00513.71
7.3.310.0070.00016.74
7.3.300.0000.00716.62
7.3.290.0100.00716.66
7.3.280.0070.00816.70
7.3.270.0110.00316.71
7.3.260.0030.01116.73
7.3.250.0040.01116.73
7.3.240.0090.00616.75
7.3.230.0040.01116.60
7.3.220.0150.00416.71
7.3.210.0140.00316.56
7.3.200.0130.00716.54
7.3.190.0060.00916.61
7.3.180.0130.00616.70
7.3.170.0090.00916.63
7.3.160.0070.00716.64
7.3.150.0030.01116.63
7.3.140.0130.00316.65
7.3.130.0100.00716.70
7.3.120.0080.00716.58
7.3.110.0030.01016.53
7.3.100.0100.00316.56
7.3.90.0180.00016.83
7.3.80.0100.00416.57
7.3.70.0120.00616.64
7.3.60.0130.00616.71
7.3.50.0070.01316.63
7.3.40.0160.00316.76
7.3.30.0060.01316.68
7.3.20.0100.01016.79
7.3.10.0030.01716.70
7.3.00.0100.00916.70

preferences:
66.14 ms | 400 KiB | 5 Q