3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = ['foo' => 'bar']; var_dump($var['foo']); $var['foo'] = null; var_dump($var['foo']); unset($var['foo']); var_dump($var['foo']);

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)
8.3.60.0170.00318.55
8.3.50.0110.00821.94
8.3.40.0040.01118.84
8.3.30.0110.00418.81
8.3.20.0050.00220.34
8.3.10.0020.00521.95
8.3.00.0000.00819.38
8.2.180.0100.00716.50
8.2.170.0120.00622.96
8.2.160.0070.00720.35
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0080.00022.02
8.2.110.0060.00320.58
8.2.100.0040.00717.97
8.2.90.0040.00419.10
8.2.80.0000.00817.97
8.2.70.0030.00517.63
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0040.00420.01
8.2.30.0000.00717.94
8.2.20.0060.00317.65
8.2.10.0070.00018.04
8.2.00.0030.00617.83
8.1.280.0100.00725.92
8.1.270.0080.00023.96
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0050.00523.82
8.1.230.0060.00619.16
8.1.220.0040.00417.76
8.1.210.0000.00718.77
8.1.200.0000.00917.35
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0070.00018.65
8.1.160.0050.00321.86
8.1.150.0000.00818.76
8.1.140.0080.00017.43
8.1.130.0030.00617.79
8.1.120.0000.00817.38
8.1.110.0050.00217.27
8.1.100.0040.00417.46
8.1.90.0000.00717.28
8.1.80.0050.00317.39
8.1.70.0070.00017.36
8.1.60.0060.00317.50
8.1.50.0040.00417.35
8.1.40.0000.00817.41
8.1.30.0050.00317.65
8.1.20.0080.00017.50
8.1.10.0020.00517.53
8.1.00.0040.00417.46
8.0.300.0040.00418.77
8.0.290.0020.00716.75
8.0.280.0030.00318.38
8.0.270.0030.00317.12
8.0.260.0050.00317.25
8.0.250.0030.00316.93
8.0.240.0050.00216.90
8.0.230.0030.00316.84
8.0.220.0030.00316.91
8.0.210.0050.00316.88
8.0.200.0030.00316.89
8.0.190.0030.00517.01
8.0.180.0000.00716.90
8.0.170.0060.00316.81
8.0.160.0030.00316.80
8.0.150.0040.00416.90
8.0.140.0000.00716.73
8.0.130.0000.00513.29
8.0.120.0050.00316.89
8.0.110.0040.00416.72
8.0.100.0040.00416.89
8.0.90.0000.00816.79
8.0.80.0090.00616.93
8.0.70.0000.00716.91
8.0.60.0000.00716.85
8.0.50.0040.00416.87
8.0.30.0110.00917.04
8.0.20.0140.00517.40
8.0.10.0080.00017.03
8.0.00.0100.00716.86
7.4.330.0020.00215.00
7.4.320.0030.00316.60
7.4.300.0000.00616.57
7.4.290.0000.00716.61
7.4.280.0030.00616.38
7.4.270.0030.00316.54
7.4.260.0070.00016.63
7.4.250.0000.00716.45
7.4.240.0060.00116.50
7.4.230.0000.00716.58
7.4.220.0120.01216.65
7.4.210.0030.01216.40
7.4.200.0070.00016.39
7.4.160.0120.01216.57
7.4.150.0160.00717.40
7.4.140.0090.01117.86
7.4.130.0120.00616.52
7.4.120.0130.00816.52
7.4.110.0140.00316.40
7.4.100.0100.00716.57
7.4.90.0060.01116.56
7.4.80.0130.00319.39
7.4.70.0140.00316.52
7.4.60.0070.01016.44
7.4.50.0030.00516.41
7.4.40.0130.01316.41
7.4.30.0100.01016.45
7.4.00.0040.00814.90
7.3.330.0000.00613.13
7.3.320.0030.00313.17
7.3.310.0030.00316.38
7.3.300.0000.00716.36
7.3.290.0090.00616.41
7.3.280.0080.00816.41
7.3.270.0070.01017.40
7.3.260.0120.01216.40
7.3.240.0090.00916.23
7.3.230.0090.00916.39
7.3.210.0120.00616.35
7.3.200.0090.00919.39
7.3.190.0080.00916.36
7.3.180.0100.00716.43
7.3.170.0100.01016.38
7.3.160.0090.00616.37
7.2.330.0120.00616.54
7.2.320.0130.00316.70
7.2.310.0100.00616.71
7.2.300.0000.01616.59
7.2.290.0110.00616.21
7.2.00.0000.01418.99
7.1.100.0400.00815.39
7.1.70.0000.00717.20
7.1.60.0070.00719.32
7.1.50.0030.01916.86
7.1.00.0000.08022.30
7.0.200.0120.00316.39
7.0.140.0070.06721.95
7.0.60.0030.08719.92
7.0.50.0070.05717.75
7.0.40.0030.09319.90
7.0.30.0570.06720.13
7.0.20.0270.08020.04
7.0.10.0070.05020.00
7.0.00.0070.08320.12
5.6.280.0000.07721.09
5.6.210.0100.08020.76
5.6.200.0100.07018.09
5.6.190.0100.05320.48
5.6.180.0170.04020.60
5.6.170.0400.06720.38
5.6.160.0070.06720.52
5.6.150.0030.07318.22
5.6.140.0100.08018.11
5.6.130.0000.04718.20
5.6.120.0130.07721.00
5.6.110.0100.05320.99
5.6.100.0100.08021.07
5.6.90.0030.05320.87
5.6.80.0030.06720.27
5.5.350.0070.03720.42
5.5.340.0130.07318.01
5.5.330.0100.08720.25
5.5.320.0370.06020.17
5.5.310.0370.06020.27
5.5.300.0070.07717.91
5.5.290.0070.06317.99
5.5.280.0100.03720.73
5.5.270.0000.08320.62
5.5.260.0100.06720.64
5.5.250.0030.08720.70
5.5.240.0170.04020.15
5.4.450.1070.05019.54
5.4.440.0700.06319.32
5.4.430.0830.05319.13
5.4.420.0630.00019.30
5.4.410.0630.00019.59
5.4.400.0630.00019.15
5.4.390.0670.00019.26
5.4.380.0830.00019.05
5.4.370.0600.00018.96
5.4.360.0600.00018.95
5.4.350.0630.00019.05
5.4.340.0080.03211.97
5.4.320.0030.03912.45
5.4.310.0040.04012.45
5.4.300.0050.04412.45
5.4.290.0100.03912.45
5.4.280.0070.03612.34
5.4.270.0050.04012.34
5.4.260.0050.03912.34
5.4.250.0090.03612.34
5.4.240.0040.03712.35
5.4.230.0100.03812.34
5.4.220.0070.04212.34
5.4.210.0060.03912.34
5.4.200.0060.03712.34
5.4.190.0070.03512.33
5.4.180.0070.04212.34
5.4.170.0090.03412.35
5.4.160.0070.03512.34
5.4.150.0050.03612.34
5.4.140.0070.03612.02
5.4.130.0050.03812.01
5.4.120.0050.03511.97
5.4.110.0060.03611.96
5.4.100.0070.03311.96
5.4.90.0080.03411.96
5.4.80.0050.03711.96
5.4.70.0060.03411.96
5.4.60.0000.04111.96
5.4.50.0070.03411.96
5.4.40.0040.03611.95
5.4.30.0100.03811.95
5.4.20.0070.03911.95
5.4.10.0080.04111.95
5.4.00.0050.03811.44
5.3.290.0060.04212.80
5.3.280.0050.04012.71
5.3.270.0090.03712.72
5.3.260.0050.04412.72
5.3.250.0060.04412.71
5.3.240.0080.03512.72
5.3.230.0060.03712.71
5.3.220.0060.04012.68
5.3.210.0070.03712.68
5.3.200.0050.03712.68
5.3.190.0080.03512.67
5.3.180.0060.04212.68
5.3.170.0070.03412.67
5.3.160.0040.03712.68
5.3.150.0060.04212.68
5.3.140.0060.03712.66
5.3.130.0100.03512.66
5.3.120.0060.03912.66
5.3.110.0030.04312.66
5.3.100.0050.04012.11
5.3.90.0070.03912.09
5.3.80.0080.03812.07
5.3.70.0080.03712.08
5.3.60.0040.03912.07
5.3.50.0060.03612.00
5.3.40.0050.03712.00
5.3.30.0020.03911.95
5.3.20.0080.03711.73
5.3.10.0070.03411.70
5.3.00.0080.03311.68
5.2.170.0050.0309.18
5.2.160.0050.0309.18
5.2.150.0040.0319.18
5.2.140.0050.0299.18
5.2.130.0040.0309.14
5.2.120.0050.0279.14
5.2.110.0030.0309.15
5.2.100.0050.0289.14
5.2.90.0050.0329.14
5.2.80.0060.0289.14
5.2.70.0070.0359.14
5.2.60.0060.0289.09
5.2.50.0050.0299.05
5.2.40.0050.0289.03
5.2.30.0070.0289.01
5.2.20.0050.0289.00
5.2.10.0070.0268.93
5.2.00.0050.0288.78
5.1.60.0050.0238.07
5.1.50.0060.0238.06
5.1.40.0040.0248.05
5.1.30.0040.0268.40
5.1.20.0060.0258.41
5.1.10.0030.0278.14
5.1.00.0040.0258.14
5.0.50.0050.0246.62
5.0.40.0030.0306.48
5.0.30.0010.0376.29
5.0.20.0030.0246.26
5.0.10.0020.0216.23
5.0.00.0030.0316.23
4.4.90.0040.0144.78
4.4.80.0040.0154.76
4.4.70.0050.0154.75
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0020.0284.71
4.4.30.0030.0174.76
4.4.20.0040.0174.84
4.4.10.0030.0224.85
4.4.00.0040.0304.75
4.3.110.0060.0154.67
4.3.100.0020.0194.66
4.3.90.0010.0164.64
4.3.80.0030.0254.59
4.3.70.0020.0174.63
4.3.60.0020.0154.63
4.3.50.0020.0164.63
4.3.40.0030.0234.54
4.3.30.0010.0183.29
4.3.20.0020.0173.26
4.3.10.0030.0163.22
4.3.00.0200.0177.37

preferences:
35.82 ms | 401 KiB | 5 Q