3v4l.org

run code in 300+ PHP versions simultaneously
<?php $global = $rules = []; $global['a'] = 'b'; $c = array_merge($global, $rules);; print_r($c);

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)
8.3.60.0100.00318.30
8.3.50.0270.00821.08
8.3.40.0090.00918.72
8.3.30.0140.00019.01
8.3.20.0040.00420.04
8.3.10.0040.00423.50
8.3.00.0060.00319.10
8.2.180.0100.00316.38
8.2.170.0070.01022.96
8.2.160.0000.01420.35
8.2.150.0000.00824.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00422.19
8.2.110.0100.00020.93
8.2.100.0040.00817.84
8.2.90.0030.00619.05
8.2.80.0040.00417.97
8.2.70.0060.00617.36
8.2.60.0000.00817.93
8.2.50.0050.00318.10
8.2.40.0030.00619.84
8.2.30.0030.00618.11
8.2.20.0040.00417.67
8.2.10.0040.00418.04
8.2.00.0040.00417.54
8.1.280.0100.00325.92
8.1.270.0070.00022.05
8.1.260.0100.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00022.22
8.1.230.0110.00017.89
8.1.220.0090.00017.74
8.1.210.0040.00418.77
8.1.200.0080.00017.23
8.1.190.0040.00417.22
8.1.180.0000.00718.10
8.1.170.0030.00618.57
8.1.160.0030.00621.99
8.1.150.0040.00418.67
8.1.140.0070.00017.26
8.1.130.0070.00017.73
8.1.120.0070.00017.39
8.1.110.0000.00817.34
8.1.100.0070.00017.40
8.1.90.0040.00417.29
8.1.80.0020.00517.35
8.1.70.0040.00417.30
8.1.60.0000.00917.40
8.1.50.0040.00417.46
8.1.40.0040.00417.32
8.1.30.0030.00517.47
8.1.20.0030.00617.61
8.1.10.0040.00417.53
8.1.00.0040.00417.37
8.0.300.0000.00718.77
8.0.290.0080.00016.63
8.0.280.0070.00018.37
8.0.270.0070.00017.10
8.0.260.0040.00417.09
8.0.250.0000.00716.92
8.0.240.0060.00316.88
8.0.230.0000.00716.88
8.0.220.0000.00716.78
8.0.210.0030.00316.87
8.0.200.0030.00316.73
8.0.190.0090.00316.87
8.0.180.0000.00716.80
8.0.170.0030.00516.89
8.0.160.0030.00316.74
8.0.150.0070.00016.84
8.0.140.0040.00416.77
8.0.130.0030.00313.27
8.0.120.0000.00716.82
8.0.110.0040.00416.83
8.0.100.0030.00516.79
8.0.90.0040.00416.82
8.0.80.0060.01516.82
8.0.70.0050.00216.81
8.0.60.0000.00716.69
8.0.50.0030.00516.75
8.0.30.0150.00716.96
8.0.20.0150.00317.40
8.0.10.0060.00316.85
8.0.00.0070.01016.92
7.4.330.0060.00015.00
7.4.320.0070.00016.47
7.4.300.0030.00316.39
7.4.290.0000.00716.58
7.4.280.0030.00416.32
7.4.270.0030.00316.39
7.4.260.0000.00716.41
7.4.250.0050.00316.48
7.4.240.0000.00716.55
7.4.230.0030.00316.46
7.4.220.0140.00316.63
7.4.210.0130.00016.59
7.4.200.0000.00716.35
7.4.160.0130.00316.45
7.4.150.0030.01517.40
7.4.140.0170.00517.86
7.4.130.0120.00516.61
7.4.120.0070.00916.56
7.4.110.0110.00616.40
7.4.100.0130.00316.50
7.4.90.0140.00716.35
7.4.80.0070.01019.39
7.4.70.0090.00616.50
7.4.60.0090.00916.26
7.4.50.0060.00316.50
7.4.40.0120.00416.45
7.4.30.0120.00416.40
7.4.00.0060.00915.18
7.3.330.0020.00513.11
7.3.320.0050.00013.12
7.3.310.0030.00316.34
7.3.300.0000.00616.23
7.3.290.0110.00816.23
7.3.280.0090.00816.18
7.3.270.0070.01717.40
7.3.260.0070.01016.18
7.3.250.0110.00516.21
7.3.240.0140.00616.23
7.3.230.0100.00716.39
7.3.210.0030.01316.26
7.3.200.0130.01019.39
7.3.190.0120.00916.12
7.3.180.0090.00616.32
7.3.170.0130.00616.52
7.3.160.0150.00616.56
7.3.10.0060.00616.46
7.3.00.0030.00916.82
7.2.330.0060.01216.47
7.2.320.0080.00916.44
7.2.310.0100.00716.64
7.2.300.0030.01316.43
7.2.290.0040.01216.39
7.2.130.0070.00716.85
7.2.120.0110.00316.69
7.2.110.0000.00916.82
7.2.100.0070.00716.61
7.2.90.0100.00316.77
7.2.80.0060.00616.77
7.2.70.0000.00916.55
7.2.60.0030.00916.63
7.2.50.0000.01416.49
7.2.40.0030.01316.72
7.2.30.0070.01016.86
7.2.20.0070.00716.68
7.2.10.0040.00416.78
7.2.00.0070.00716.83
7.1.250.0050.00315.97
7.1.70.0030.00617.09
7.1.60.0040.00717.20
7.1.50.0070.01716.56
7.1.00.0030.07722.33
7.0.200.0110.01316.84
7.0.140.0170.06021.93
7.0.60.0170.07721.75
7.0.50.0100.08317.84
7.0.40.0030.06020.04
7.0.30.0600.07020.13
7.0.20.0330.07720.09
7.0.10.0070.05020.00
7.0.00.0030.04720.09
5.6.280.0030.07321.07
5.6.210.0130.07720.62
5.6.200.0070.08318.19
5.6.190.0100.08320.27
5.6.180.3430.04020.39
5.6.170.0270.07720.38
5.6.160.0070.08320.49
5.6.150.0100.08318.22
5.6.140.0000.05318.16
5.6.130.0000.08318.17
5.6.120.0170.03721.14
5.6.110.0070.08320.98
5.6.100.0030.04321.12
5.6.90.0100.08721.09
5.6.80.0100.07020.48
5.5.350.0000.09020.52
5.5.340.0030.04017.93
5.5.330.0100.04020.23
5.5.320.0370.07020.34
5.5.310.0230.03320.23
5.5.300.0000.05717.91
5.5.290.0030.07018.01
5.5.280.0070.05020.76
5.5.270.0030.08720.79
5.5.260.0070.08320.75
5.5.250.0100.06320.60
5.5.240.0270.06720.26
5.4.450.0870.06019.12
5.4.440.0830.06019.47
5.4.430.0700.06019.09
5.4.420.0730.00019.63
5.4.410.0600.00019.41
5.4.400.0600.00019.06
5.4.390.0600.00019.14
5.4.380.0630.00019.16
5.4.370.0630.00018.99
5.4.360.0600.00019.18
5.4.350.0630.00019.15
5.4.340.0050.03411.96
5.4.320.0050.03712.45
5.4.310.0060.03712.45
5.4.300.0090.03212.45
5.4.290.0080.03412.45
5.4.280.0040.03712.34
5.4.270.0030.03812.35
5.4.260.0040.04312.34
5.4.250.0120.03412.35
5.4.240.0060.03412.34
5.4.230.0060.04412.34
5.4.220.0070.03412.34
5.4.210.0040.03612.34
5.4.200.0060.03912.34
5.4.190.0070.03812.33
5.4.180.0030.03812.34
5.4.170.0050.03612.35
5.4.160.0070.03412.34
5.4.150.0090.03612.34
5.4.140.0050.04212.02
5.4.130.0050.03812.01
5.4.120.0070.03511.96
5.4.110.0080.03311.96
5.4.100.0030.04611.96
5.4.90.0040.04111.96
5.4.80.0090.05111.96
5.4.70.0030.03911.96
5.4.60.0100.03711.96
5.4.50.0080.04111.96
5.4.40.0060.03611.95
5.4.30.0040.03611.95
5.4.20.0070.03911.95
5.4.10.0080.03211.94
5.4.00.0040.03811.44
5.3.290.0070.04012.80
5.3.280.0040.03912.71
5.3.270.0070.03812.73
5.3.260.0060.03912.72
5.3.250.0040.03912.72
5.3.240.0080.03812.72
5.3.230.0180.03412.71
5.3.220.0070.04912.68
5.3.210.0070.03812.68
5.3.200.0080.03412.68
5.3.190.0070.03612.68
5.3.180.0050.03712.68
5.3.170.0060.03612.67
5.3.160.0070.03912.67
5.3.150.0050.03712.67
5.3.140.0080.03612.66
5.3.130.0040.04212.66
5.3.120.0090.03512.66
5.3.110.0090.03612.65
5.3.100.0060.03612.12
5.3.90.0100.04112.08
5.3.80.0090.03212.08
5.3.70.0090.03212.07
5.3.60.0050.03612.07
5.3.50.0080.03312.00
5.3.40.0030.04012.00
5.3.30.0040.05011.95
5.3.20.0080.03411.73
5.3.10.0080.03611.70
5.3.00.0050.04011.68
5.2.170.0020.0359.18
5.2.160.0030.0309.18
5.2.150.0050.0359.18
5.2.140.0050.0309.18
5.2.130.0050.0289.14
5.2.120.0060.0269.14
5.2.110.0080.0399.15
5.2.100.0050.0299.14
5.2.90.0050.0289.14
5.2.80.0080.0269.14
5.2.70.0070.0279.14
5.2.60.0050.0309.09
5.2.50.0060.0289.05
5.2.40.0030.0299.03
5.2.30.0040.0309.02
5.2.20.0080.0349.00
5.2.10.0070.0288.92
5.2.00.0040.0298.78
5.1.60.0040.0248.07
5.1.50.0050.0248.06
5.1.40.0040.0268.05
5.1.30.0060.0248.39
5.1.20.0040.0268.41
5.1.10.0030.0298.14
5.1.00.0030.0258.14
5.0.50.0040.0236.63
5.0.40.0030.0266.48
5.0.30.0060.0326.29
5.0.20.0030.0196.27
5.0.10.0030.0196.23
5.0.00.0070.0296.23
4.4.90.0040.0194.78
4.4.80.0010.0164.76
4.4.70.0030.0154.75
4.4.60.0030.0154.75
4.4.50.0010.0164.77
4.4.40.0040.0264.71
4.4.30.0060.0134.76
4.4.20.0020.0184.85
4.4.10.0030.0174.85
4.4.00.0020.0274.76
4.3.110.0040.0194.67
4.3.100.0030.0144.66
4.3.90.0040.0134.63
4.3.80.0010.0254.59
4.3.70.0030.0134.63
4.3.60.0020.0144.63
4.3.50.0020.0154.63
4.3.40.0020.0244.54
4.3.30.0020.0153.28
4.3.20.0020.0163.26
4.3.10.0030.0173.22
4.3.00.0170.0177.20

preferences:
50.93 ms | 401 KiB | 5 Q