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('2017-03-18'))->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)
8.3.40.0120.00318.79
8.3.30.0070.00719.17
8.3.20.0000.00720.09
8.3.10.0000.00723.65
8.3.00.0080.00019.04
8.2.170.0180.00322.96
8.2.160.0100.01022.08
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00926.16
8.2.120.0030.00519.78
8.2.110.0030.00620.34
8.2.100.0140.00018.03
8.2.90.0040.00417.97
8.2.80.0000.00817.97
8.2.70.0040.00417.93
8.2.60.0040.00418.09
8.2.50.0000.00818.10
8.2.40.0040.00421.20
8.2.30.0000.00819.13
8.2.20.0040.00417.86
8.2.10.0000.00717.94
8.2.00.0000.00817.79
8.1.270.0000.00818.72
8.1.260.0050.00526.35
8.1.250.0000.00728.09
8.1.240.0060.00322.14
8.1.230.0040.00820.90
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0090.00017.38
8.1.190.0060.00317.35
8.1.180.0030.00518.10
8.1.170.0030.00620.78
8.1.160.0070.00018.88
8.1.150.0080.00018.83
8.1.140.0040.00417.50
8.1.130.0000.00917.77
8.1.120.0070.00017.63
8.1.110.0040.00417.60
8.1.100.0040.00417.59
8.1.90.0040.00417.62
8.1.80.0070.00017.56
8.1.70.0030.00317.54
8.1.60.0080.00017.66
8.1.50.0060.00317.42
8.1.40.0000.00817.46
8.1.30.0060.00317.71
8.1.20.0000.00817.68
8.1.10.0040.00417.60
8.1.00.0020.00517.63
8.0.300.0040.00419.83
8.0.290.0000.00816.88
8.0.280.0000.00718.51
8.0.270.0030.00317.27
8.0.260.0030.00517.21
8.0.250.0050.00217.13
8.0.240.0040.00417.06
8.0.230.0000.00717.09
8.0.220.0000.00817.00
8.0.210.0040.00417.06
8.0.200.0030.00617.07
8.0.190.0080.00017.00
8.0.180.0040.00417.03
8.0.170.0040.00417.05
8.0.160.0000.00716.95
8.0.150.0040.00416.94
8.0.140.0030.00416.98
8.0.130.0000.00613.46
8.0.120.0030.00516.93
8.0.110.0040.00417.04
8.0.100.0050.00316.81
8.0.90.0030.00316.86
8.0.80.0070.01417.01
8.0.70.0000.00716.80
8.0.60.0000.00716.96
8.0.50.0040.00417.07
8.0.30.0110.01017.21
8.0.20.0150.00817.41
8.0.10.0040.00416.97
8.0.00.0150.00516.77
7.4.330.0020.00215.03
7.4.320.0000.00716.59
7.4.300.0030.00316.60
7.4.290.0030.00316.59
7.4.280.0000.00916.57
7.4.270.0030.00316.66
7.4.260.0030.00716.67
7.4.250.0040.00416.55
7.4.240.0020.00516.65
7.4.230.0030.00316.38
7.4.220.0030.01416.58
7.4.210.0090.01216.48
7.4.200.0040.00416.70
7.4.160.0040.01416.63
7.4.150.0110.00817.40
7.4.140.0100.01017.86
7.4.130.0130.00416.60
7.4.120.0080.00816.56
7.4.110.0110.01116.39
7.4.100.0170.00016.67
7.4.90.0090.00916.61
7.4.80.0030.01719.39
7.4.70.0200.00316.60
7.4.60.0080.00816.49
7.4.50.0100.00016.55
7.4.40.0110.00516.78
7.4.30.0060.01216.74
7.4.00.0030.01414.88
7.3.330.0080.00013.20
7.3.320.0060.00013.36
7.3.310.0000.00716.48
7.3.300.0040.00416.42
7.3.290.0070.00716.47
7.3.280.0070.00816.38
7.3.270.0030.01417.40
7.3.260.0070.01716.64
7.3.250.0100.00716.65
7.3.240.0080.00816.50
7.3.230.0120.00616.49
7.3.210.0100.01316.68
7.3.200.0150.00619.39
7.3.190.0120.00616.43
7.3.180.0100.00616.74
7.3.170.0160.00616.69
7.3.160.0080.01316.70
7.2.330.0120.01517.03
7.2.320.0120.01217.00
7.2.310.0030.01316.65
7.2.300.0070.01016.98
7.2.290.0030.01517.04
7.2.00.0110.00918.89
7.1.100.0090.00618.10
7.1.70.0000.00717.40
7.1.60.0100.01319.22
7.1.50.0060.01616.50
7.1.00.0100.07022.35
7.0.200.0000.00716.84
7.0.140.0000.06022.21
7.0.60.0130.07320.04
7.0.50.0070.08317.99
7.0.40.0100.04020.14
7.0.30.0300.07320.13
7.0.20.0430.07020.25
7.0.10.0130.07020.15
7.0.00.0100.03720.09
5.6.280.0030.07321.02
5.6.210.0100.07720.48
5.6.200.0130.04718.22
5.6.190.0130.08020.41
5.6.180.0270.04720.44
5.6.170.0400.06720.54
5.6.160.0070.08720.49
5.6.150.0230.07318.18
5.6.140.0100.06318.27
5.6.130.0030.08718.21
5.6.120.0100.07721.00
5.6.110.0030.05020.99
5.6.100.0070.05021.09
5.6.90.0030.07720.88
5.6.80.0030.04020.49
5.5.350.3970.04020.32
5.5.340.0000.06018.09
5.5.330.0030.05720.58
5.5.320.0200.07320.31
5.5.310.0370.04720.26
5.5.300.0030.08718.05
5.5.290.0070.07017.95
5.5.280.0070.08720.88
5.5.270.0070.08020.87
5.5.260.0100.06720.76
5.5.250.0030.04320.59
5.5.240.0200.07720.14
5.4.450.3370.04319.34
5.4.440.3330.03719.28
5.4.430.3470.03319.38
5.4.420.3370.04019.31
5.4.410.3400.03719.18
5.4.400.3470.03718.86
5.4.390.3600.04019.24
5.4.380.3600.04018.98
5.4.370.3270.04018.96
5.4.360.3500.03718.87
5.4.350.3500.03318.85
5.4.340.3370.03019.31
5.4.320.3330.03319.31
5.4.310.3500.03018.99
5.4.300.3170.03718.99
5.4.290.3570.03718.99
5.4.280.3170.03718.98
5.4.270.3270.03319.16
5.4.260.3770.03318.99
5.4.250.3930.03018.98
5.4.240.3570.04019.22
5.4.230.3730.03318.81
5.4.220.3170.03719.07
5.4.210.3270.04019.07
5.4.200.3200.04319.30
5.4.190.3400.04019.21
5.4.180.3300.04719.21
5.4.170.3300.03719.06
5.4.160.3500.03718.93
5.4.150.3530.03018.95
5.4.140.3530.03016.72
5.4.130.3400.03716.33
5.4.120.3370.03716.42
5.4.110.3870.03716.56
5.4.100.3500.04716.57
5.4.90.3270.04016.59
5.4.80.2370.03016.49
5.4.70.3570.05016.42
5.4.60.2630.03316.39
5.4.50.2830.03716.43
5.4.40.2600.03016.34
5.4.30.2630.03316.34
5.4.20.3170.03316.23
5.4.10.3370.03016.52
5.4.00.3470.04015.86
5.3.290.3670.04714.67
5.3.280.4030.04014.82
5.3.270.3300.03314.77
5.3.260.3500.03314.63
5.3.250.3470.03314.72
5.3.240.3230.04014.63
5.3.230.3170.03714.52
5.3.220.3170.04014.79
5.3.210.2870.03714.59
5.3.200.3270.04314.58
5.3.190.3100.03014.58
5.3.180.3200.04014.54
5.3.170.3130.03714.64
5.3.160.3100.03014.59
5.3.150.2870.03314.68
5.3.140.2530.04314.71
5.3.130.3230.04014.54
5.3.120.3070.03314.46
5.3.110.3030.03714.52
5.3.100.3370.04314.04
5.3.90.3030.04014.10
5.3.80.3170.02314.04
5.3.70.3070.03713.91
5.3.60.3430.04013.91
5.3.50.3270.04014.17
5.3.40.3200.03714.11
5.3.30.3100.03314.04
5.3.20.3300.03013.73
5.3.10.3030.03713.55
5.3.00.2830.03313.72
5.2.170.3130.03311.26
5.2.160.2970.03011.15
5.2.150.1770.02711.20
5.2.140.2700.03011.05
5.2.130.2770.03311.00
5.2.120.2500.03011.19
5.2.110.2630.02011.21
5.2.100.2530.03011.18
5.2.90.2730.03011.18
5.2.80.2500.03311.18
5.2.70.2700.03011.00
5.2.60.2530.03011.27
5.2.50.2600.03010.91
5.2.40.2030.02710.92
5.2.30.2030.03010.84
5.2.20.2400.02711.12
5.2.10.2700.02711.02
5.2.00.2700.02710.63
5.1.60.2830.0209.97
5.1.50.2430.0279.89
5.1.40.2770.0279.85
5.1.30.2670.02310.35
5.1.20.2430.02710.33
5.1.10.2670.02710.14
5.1.00.2730.01710.29
5.0.50.1430.0238.43
5.0.40.1170.0238.32
5.0.30.1070.0278.31
5.0.20.1000.0208.31
5.0.10.1000.0208.31
5.0.00.1000.0308.31
4.4.90.1170.0208.31
4.4.80.1000.0178.31
4.4.70.1300.0208.31
4.4.60.1100.0138.31
4.4.50.1400.0178.31
4.4.40.1470.0238.31
4.4.30.1670.0138.31
4.4.20.1600.0138.31
4.4.10.1600.0138.31
4.4.00.1430.0138.31
4.3.110.1270.0238.31
4.3.100.1200.0138.31
4.3.90.1030.0138.31
4.3.80.1070.0278.31
4.3.70.1000.0178.31
4.3.60.1030.0178.31
4.3.50.0970.0178.31
4.3.40.0970.0278.31
4.3.30.0470.0178.31
4.3.20.0670.0238.31
4.3.10.0530.0138.31
4.3.00.0500.0178.31

preferences:
41.8 ms | 400 KiB | 5 Q