3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getFirstWeekOfYear(\DateTime $date = null) { if(!$date){ $date = new \DateTime(); } return (new \DateTime())->setISODate((int)$date->format('o') + 1, 1, $date->format('w')); } echo getFirstWeekOfYear(new \DateTime('2015-03-18'))->format('Y-m-d');

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)
8.3.60.0090.00618.39
8.3.50.0130.00318.04
8.3.40.0110.00718.90
8.3.30.0110.00419.01
8.3.20.0070.00020.37
8.3.10.0000.00723.52
8.3.00.0040.00418.85
8.2.180.0090.00918.54
8.2.170.0100.00322.96
8.2.160.0110.00421.93
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0070.00719.66
8.2.110.0090.00020.39
8.2.100.0090.00317.84
8.2.90.0040.00419.09
8.2.80.0030.00517.97
8.2.70.0060.00317.63
8.2.60.0070.00417.93
8.2.50.0000.00818.07
8.2.40.0040.00418.16
8.2.30.0030.00618.05
8.2.20.0050.00317.84
8.2.10.0000.00818.12
8.2.00.0070.00017.77
8.1.280.0030.01425.92
8.1.270.0030.00618.64
8.1.260.0100.00026.35
8.1.250.0040.00428.09
8.1.240.0070.00323.73
8.1.230.0110.00022.10
8.1.220.0000.00817.79
8.1.210.0040.00418.77
8.1.200.0070.00317.48
8.1.190.0080.00017.41
8.1.180.0030.00518.10
8.1.170.0040.00418.69
8.1.160.0050.00218.95
8.1.150.0000.00718.80
8.1.140.0000.00817.57
8.1.130.0050.00317.63
8.1.120.0030.00317.63
8.1.110.0000.00717.56
8.1.100.0070.00017.57
8.1.90.0050.00217.51
8.1.80.0000.00717.60
8.1.70.0030.00317.43
8.1.60.0090.00017.72
8.1.50.0000.00917.60
8.1.40.0050.00217.42
8.1.30.0030.00617.69
8.1.20.0040.00417.68
8.1.10.0080.00017.64
8.1.00.0000.00717.65
8.0.300.0000.00918.77
8.0.290.0070.00017.30
8.0.280.0040.00418.43
8.0.270.0030.00317.33
8.0.260.0000.00717.01
8.0.250.0070.00017.08
8.0.240.0070.00017.17
8.0.230.0000.00717.08
8.0.220.0030.00317.00
8.0.210.0030.00317.05
8.0.200.0020.00517.09
8.0.190.0040.00417.16
8.0.180.0040.00417.02
8.0.170.0030.00517.03
8.0.160.0000.00716.94
8.0.150.0040.00416.96
8.0.140.0040.00417.01
8.0.130.0000.00513.35
8.0.120.0030.00617.00
8.0.110.0040.00416.93
8.0.100.0050.00316.91
8.0.90.0050.00216.86
8.0.80.0080.00817.02
8.0.70.0040.00416.88
8.0.60.0000.00717.07
8.0.50.0040.00416.91
8.0.30.0100.01017.24
8.0.20.0120.01017.40
8.0.10.0050.00317.19
8.0.00.0050.01417.01
7.4.330.0050.00015.04
7.4.320.0040.00416.66
7.4.300.0060.00016.57
7.4.290.0070.00016.68
7.4.280.0040.00416.48
7.4.270.0000.00816.67
7.4.260.0030.00716.57
7.4.250.0000.00816.59
7.4.240.0020.00516.64
7.4.230.0030.00316.70
7.4.220.0170.01316.56
7.4.210.0060.00916.51
7.4.200.0030.00316.75
7.4.160.0060.00916.66
7.4.150.0140.01217.40
7.4.140.0080.01017.86
7.4.130.0140.00516.51
7.4.120.0140.00316.71
7.4.110.0070.01116.61
7.4.100.0120.00616.55
7.4.90.0120.00616.61
7.4.80.0130.00319.39
7.4.70.0130.00616.56
7.4.60.0060.01016.51
7.4.50.0050.00316.50
7.4.40.0080.00816.51
7.4.30.0040.01516.50
7.4.00.0030.01015.09
7.3.330.0030.00313.48
7.3.320.0020.00313.30
7.3.310.0030.00316.34
7.3.300.0040.00416.48
7.3.290.0090.00916.51
7.3.280.0100.00716.42
7.3.270.0150.00917.40
7.3.260.0150.00416.33
7.3.250.0070.01016.55
7.3.240.0030.01316.68
7.3.230.0070.01016.62
7.3.210.0070.01816.56
7.3.200.0120.00919.39
7.3.190.0130.00316.87
7.3.180.0120.00916.48
7.3.170.0110.01116.50
7.3.160.0080.01316.54
7.2.330.0130.00916.95
7.2.320.0120.00616.98
7.2.310.0130.00316.71
7.2.300.0130.00416.75
7.2.290.0100.01016.64
7.2.80.0040.01116.65
7.2.60.0030.00917.17
7.2.00.0070.01019.77
7.1.200.0240.00315.42
7.1.100.0040.01118.11
7.1.70.0000.00817.36
7.1.60.0090.01619.22
7.1.50.0090.00616.38
7.1.00.0100.07022.31
7.0.200.0030.00617.08
7.0.140.0000.03722.17
7.0.60.0170.07319.95
7.0.50.0170.07017.86
7.0.40.0070.09020.27
7.0.30.0370.07320.08
7.0.20.0230.05020.15
7.0.10.0100.06020.12
7.0.00.0200.03720.18
5.6.280.0030.07321.10
5.6.210.0070.07320.63
5.6.200.0030.05318.20
5.6.190.0070.08720.50
5.6.180.0270.07320.52
5.6.170.0200.05720.48
5.6.160.0030.09320.61
5.6.150.0100.07318.16
5.6.140.0030.03718.13
5.6.130.0030.04718.18
5.6.120.0000.04721.02
5.6.110.0030.04321.00
5.6.100.0100.03321.02
5.6.90.0030.04021.13
5.6.80.0130.07320.37
5.5.350.0200.07320.39
5.5.340.0130.07318.09
5.5.330.0070.05720.47
5.5.320.0230.04020.24
5.5.310.0430.07720.41
5.5.300.0100.04318.03
5.5.290.0030.08318.08
5.5.280.0100.07720.89
5.5.270.0070.08320.79
5.5.260.0070.08720.79
5.5.250.0070.07320.55
5.5.240.0030.08020.04
5.4.450.0170.05719.48
5.4.440.0200.05319.29
5.4.430.0300.04719.55
5.4.420.0230.05019.64
5.4.410.0100.06319.50
5.4.400.0100.05718.89
5.4.390.0170.05319.11
5.4.380.0230.05018.76
5.4.370.0230.05318.78
5.4.360.0230.05018.75
5.4.350.0200.06018.77
5.4.340.0230.06318.80
5.4.320.0170.06018.46
5.4.310.0130.06318.51
5.4.300.0300.04018.59
5.4.290.0230.05318.84
5.4.280.0200.05318.55
5.4.270.0270.04718.46
5.4.260.0170.05318.63
5.4.250.0170.05718.52
5.4.240.0130.06018.76
5.4.230.0300.06318.68
5.4.220.0130.06018.60
5.4.210.0230.04718.49
5.4.200.0230.04316.80
5.4.190.0270.04318.62
5.4.180.0230.04318.77
5.4.170.0130.05718.73
5.4.160.0130.05318.76
5.4.150.0200.05018.44
5.4.140.0300.04316.47
5.4.130.0100.05316.22
5.4.120.0230.04316.29
5.4.110.0200.04716.44
5.4.100.0200.05016.23
5.4.90.0130.05316.46
5.4.80.0400.05016.43
5.4.70.0170.07716.20
5.4.60.0230.06716.26
5.4.50.0230.04316.41
5.4.40.0270.06316.40
5.4.30.0270.05716.26
5.4.20.0100.05716.16
5.4.10.0230.05016.26
5.4.00.0200.04315.73
5.3.290.0100.06314.70
5.3.280.0130.06014.81
5.3.270.0230.05314.80
5.3.260.0200.05314.66
5.3.250.0170.05714.63
5.3.240.0200.05014.70
5.3.230.0200.05014.88
5.3.220.0170.05314.60
5.3.210.0130.06714.59
5.3.200.0170.05314.79
5.3.190.0230.04314.66
5.3.180.0170.05314.77
5.3.170.0230.04714.75
5.3.160.0230.04714.76
5.3.150.0170.05314.61
5.3.140.0200.05014.59
5.3.130.0130.06014.71
5.3.120.0200.06014.65
5.3.110.0100.06014.73
5.3.100.0170.05714.23
5.3.90.0300.06314.11
5.3.80.0300.06014.19
5.3.70.0130.05314.09
5.3.60.0170.05014.23
5.3.50.0070.05714.08
5.3.40.0200.06014.11
5.3.30.0200.06314.00
5.3.20.0200.04713.75
5.3.10.0200.04713.83
5.3.00.0130.05313.67
5.2.170.0070.05011.13
5.2.160.0270.03311.34
5.2.150.0300.04311.17
5.2.140.0270.03011.16
5.2.130.0030.05011.30
5.2.120.0000.05011.14
5.2.110.0170.04011.13
5.2.100.0200.03311.14
5.2.90.0070.04711.14
5.2.80.0100.04711.20
5.2.70.0100.04311.16
5.2.60.0130.04311.08
5.2.50.0170.04711.04
5.2.40.0130.04311.21
5.2.30.0130.04011.18
5.2.20.0100.04311.01
5.2.10.0070.04310.90
5.2.00.0130.04310.71
5.1.60.0130.03010.13
5.1.50.0230.02310.03
5.1.40.0130.03310.00
5.1.30.0200.03010.37
5.1.20.0130.03710.55
5.1.10.0130.03310.17
5.1.00.0100.03710.08
5.0.50.0100.0278.54
5.0.40.0030.0308.54
5.0.30.0100.0408.35
5.0.20.0030.0308.39
5.0.10.0030.0308.36
5.0.00.0130.0378.20
4.4.90.0030.0306.65
4.4.80.0070.0206.65
4.4.70.0070.0206.65
4.4.60.0100.0206.65
4.4.50.0130.0176.65
4.4.40.0130.0306.65
4.4.30.0070.0236.65
4.4.20.0100.0276.65
4.4.10.0070.0206.65
4.4.00.0100.0306.65
4.3.110.0100.0236.65
4.3.100.0030.0236.65
4.3.90.0030.0236.65
4.3.80.0130.0306.65
4.3.70.0100.0306.65
4.3.60.0030.0236.65
4.3.50.0030.0276.65
4.3.40.0030.0376.65
4.3.30.0030.0306.65
4.3.20.0030.0276.65
4.3.10.0070.0206.65
4.3.00.0030.0207.59

preferences:
41.22 ms | 400 KiB | 5 Q