3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=[1=>['a','b'],2=>'c']; print_r(array_keys($a));

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)
8.3.40.0120.01218.72
8.3.30.0110.00418.90
8.3.20.0040.00420.21
8.3.10.0050.00323.36
8.3.00.0080.01219.13
8.2.170.0110.00422.96
8.2.160.0140.00720.47
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0060.01326.16
8.2.120.0040.00422.13
8.2.110.0080.00022.08
8.2.100.0080.00417.66
8.2.90.0040.00418.98
8.2.80.0050.00317.97
8.2.70.0060.00317.63
8.2.60.0000.00817.89
8.2.50.0040.00418.07
8.2.40.0030.00519.93
8.2.30.0040.00419.78
8.2.20.0030.00617.53
8.2.10.0040.00419.84
8.2.00.0040.00417.46
8.1.270.0120.00623.79
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0040.00423.98
8.1.230.0110.00019.00
8.1.220.0060.00317.74
8.1.210.0000.00718.77
8.1.200.0030.00617.23
8.1.190.0000.00917.40
8.1.180.0050.00318.10
8.1.170.0080.00018.52
8.1.160.0030.00621.92
8.1.150.0000.00718.46
8.1.140.0000.00717.25
8.1.130.0070.00017.68
8.1.120.0000.00717.43
8.1.110.0000.00717.28
8.1.100.0020.00517.33
8.1.90.0050.00317.29
8.1.80.0020.00517.29
8.1.70.0030.00317.30
8.1.60.0000.00817.54
8.1.50.0090.00017.41
8.1.40.0000.00717.46
8.1.30.0030.00617.43
8.1.20.0000.00717.57
8.1.10.0000.00717.41
8.1.00.0000.00917.37
8.0.300.0020.00519.09
8.0.290.0070.00017.05
8.0.280.0070.00018.37
8.0.270.0070.00017.23
8.0.260.0000.00717.18
8.0.250.0030.00316.85
8.0.240.0040.00416.89
8.0.230.0090.00016.79
8.0.220.0070.00016.73
8.0.210.0000.00716.78
8.0.200.0040.00416.79
8.0.190.0040.00416.82
8.0.180.0070.00016.71
8.0.170.0000.00716.69
8.0.160.0050.00216.67
8.0.150.0000.00716.73
8.0.140.0070.00316.77
8.0.130.0050.00013.18
8.0.120.0050.00316.82
8.0.110.0040.00416.65
8.0.100.0050.00216.76
8.0.90.0000.00716.81
8.0.80.0070.01316.77
8.0.70.0070.00016.79
8.0.60.0000.00816.68
8.0.50.0000.00816.83
8.0.30.0060.01217.00
8.0.20.0080.01017.40
8.0.10.0040.00416.82
8.0.00.0060.01116.62
7.4.330.0060.00015.02
7.4.320.0000.00716.33
7.4.300.0000.00616.56
7.4.290.0040.00416.51
7.4.280.0030.00616.47
7.4.270.0070.00016.52
7.4.260.0000.00716.53
7.4.250.0070.00016.53
7.4.240.0010.00616.42
7.4.230.0000.00716.63
7.4.220.0160.01016.55
7.4.210.0100.00516.48
7.4.200.0030.00316.36
7.4.190.0040.00216.46
7.4.160.0040.01116.63
7.4.150.0100.01017.40
7.4.140.0150.00717.86
7.4.130.0130.00416.38
7.4.120.0130.00616.33
7.4.110.0060.01116.61
7.4.100.0120.00616.28
7.4.90.0080.00916.44
7.4.80.0100.00719.39
7.4.70.0060.01316.48
7.4.60.0060.01216.42
7.4.50.0040.00416.52
7.4.40.0000.01222.77
7.4.30.0070.01016.42
7.4.00.0030.01115.02
7.3.330.0020.00213.03
7.3.320.0000.00612.87
7.3.310.0070.00016.22
7.3.300.0030.00316.13
7.3.290.0100.01016.23
7.3.280.0110.00816.10
7.3.270.0060.01217.40
7.3.260.0140.00316.36
7.3.250.0080.01016.19
7.3.240.0080.00816.53
7.3.230.0060.01016.39
7.3.210.0060.01116.15
7.3.200.0060.01719.39
7.3.190.0100.00716.44
7.3.180.0090.00616.27
7.3.170.0060.00916.27
7.3.160.0050.01116.41
7.3.120.0030.00914.79
7.2.330.0110.00816.30
7.2.320.0130.00516.59
7.2.310.0110.00716.33
7.2.300.0060.01016.13
7.2.290.0100.00716.04
7.2.60.0070.00416.41
7.2.00.0030.00919.37
7.1.200.0110.01115.47
7.1.100.0030.00917.92
7.1.70.0030.00717.25
7.1.60.0190.00619.46
7.1.50.0030.02016.57
7.1.00.0100.07022.46
7.0.200.0000.00716.50
7.0.140.0030.07322.01
7.0.60.0100.05020.03
7.0.50.0000.05317.83
7.0.40.0000.08020.24
7.0.30.0530.07720.16
7.0.20.0200.04720.09
7.0.10.0170.07720.24
7.0.00.0130.05020.05
5.6.280.0070.06721.09
5.6.210.0070.08320.52
5.6.200.0130.06718.15
5.6.190.0100.07720.52
5.6.180.0030.08720.67
5.6.170.0300.08020.38
5.6.160.0130.06320.43
5.6.150.0100.08018.22
5.6.140.0100.03718.26
5.6.130.0030.08018.24
5.6.120.0300.04321.11
5.6.110.0070.08320.97
5.6.100.0070.08320.95
5.6.90.0130.05721.00
5.6.80.0170.06020.52
5.5.350.0230.07020.46
5.5.340.0000.04317.98
5.5.330.0030.08020.25
5.5.320.0270.03720.30
5.5.310.0230.03720.30
5.5.300.0070.08017.96
5.5.290.0070.03717.94
5.5.280.0270.06720.88
5.5.270.0100.08320.78
5.5.260.0100.07720.84
5.5.250.0100.06320.57
5.5.240.0070.07320.25
5.4.450.0730.05319.69
5.4.440.0770.05719.60
5.4.430.0730.05319.53
5.4.420.0030.06019.46
5.4.410.0830.05719.33
5.4.400.0630.05319.27
5.4.390.0200.04319.14
5.4.380.0230.06318.50
5.4.370.0230.05718.84
5.4.360.1030.05018.71
5.4.350.0300.05718.76
5.4.340.0330.07318.46
5.4.320.0050.04112.48
5.4.310.0070.04512.48
5.4.300.0070.04012.48
5.4.290.0060.04812.46
5.4.280.0110.04512.36
5.4.270.0100.05812.36
5.4.260.0110.06712.36
5.4.250.0110.04012.36
5.4.240.0070.04612.36
5.4.230.0080.04912.35
5.4.220.0040.04312.35
5.4.210.0100.04312.35
5.4.200.0060.04612.35
5.4.190.0090.04212.35
5.4.180.0080.04312.35
5.4.170.0100.04512.36
5.4.160.0190.05912.35
5.4.150.0040.04012.35
5.4.140.0050.04012.04
5.4.130.0060.05512.02
5.4.120.0100.04111.98
5.4.110.0040.06311.97
5.4.100.0070.04911.98
5.4.90.0080.05211.98
5.4.80.0100.04911.97
5.4.70.0060.04711.97
5.4.60.0070.05211.97
5.4.50.0040.05111.96
5.4.40.0060.05111.96
5.4.30.0060.04511.96
5.4.20.0110.03111.95
5.4.10.0060.03611.96
5.4.00.0040.03711.45
5.3.290.0080.03812.80
5.3.280.0070.03812.70
5.3.270.0060.03812.72
5.3.260.0090.03612.72
5.3.250.0080.03612.72
5.3.240.0080.03812.72
5.3.230.0080.03712.71
5.3.220.0080.05112.68
5.3.210.0080.04212.68
5.3.200.0060.04012.68
5.3.190.0070.03712.67
5.3.180.0090.03312.67
5.3.170.0030.04012.67
5.3.160.0060.03712.67
5.3.150.0050.03912.67
5.3.140.0060.04912.66
5.3.130.0090.03612.66
5.3.120.0060.05612.66
5.3.110.0050.03912.65
5.3.100.0070.03912.12
5.3.90.0060.03812.08
5.3.80.0080.04012.07
5.3.70.0040.03812.08
5.3.60.0040.03912.07
5.3.50.0070.03712.00
5.3.40.0030.04112.00
5.3.30.0050.03911.95
5.3.20.0020.04111.72
5.3.10.0050.03711.70
5.3.00.0070.03711.68
5.2.170.0050.0329.18
5.2.160.0050.0309.18
5.2.150.0060.0329.18
5.2.140.0030.0329.18
5.2.130.0050.0389.14
5.2.120.0030.0319.14
5.2.110.0030.0309.14
5.2.100.0030.0309.14
5.2.90.0040.0309.14
5.2.80.0070.0319.14
5.2.70.0040.0339.14
5.2.60.0040.0329.09
5.2.50.0030.0359.06
5.2.40.0030.0309.04
5.2.30.0050.0319.01
5.2.20.0040.0309.00
5.2.10.0040.0338.93
5.2.00.0120.0318.78
5.1.60.0050.0278.07
5.1.50.0050.0238.07
5.1.40.0030.0268.04
5.1.30.0060.0348.40
5.1.20.0040.0288.42
5.1.10.0010.0288.14
5.1.00.0020.0278.14
5.0.50.0050.0186.62
5.0.40.0040.0186.47
5.0.30.0050.0296.29
5.0.20.0030.0196.27
5.0.10.0050.0186.24
5.0.00.0040.0316.23
4.4.90.0030.0164.78
4.4.80.0040.0144.75
4.4.70.0010.0174.76
4.4.60.0030.0154.75
4.4.50.0030.0164.77
4.4.40.0050.0264.71
4.4.30.0030.0154.76
4.4.20.0020.0164.84
4.4.10.0030.0154.85
4.4.00.0020.0264.75
4.3.110.0030.0154.67
4.3.100.0040.0164.66
4.3.90.0030.0164.64
4.3.80.0060.0324.59
4.3.70.0040.0224.63
4.3.60.0030.0234.63
4.3.50.0000.0244.63
4.3.40.0050.0234.54
4.3.30.0030.0153.28
4.3.20.0020.0163.26
4.3.10.0030.0153.21
4.3.00.0000.02010.54

preferences:
50.41 ms | 400 KiB | 5 Q