3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = ["apple" => "bla", "peer" => "bleh"]; $arr2 = ["apple" => "foo", "bar" => "baz"]; $arr1Keys = array_keys($arr1); $arr2Keys = array_keys($arr2); $totalKeys = array_merge($arr1Keys, $arr2Keys); $totalKeys = $arr1Keys + $arr2Keys; var_dump($arr1Keys, $arr2Keys, $totalKeys);

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)
8.3.60.0080.00618.43
8.3.50.0100.00722.73
8.3.40.0140.00018.42
8.3.30.0070.00718.99
8.3.20.0040.00420.21
8.3.10.0040.00423.69
8.3.00.0040.00419.12
8.2.180.0080.00618.04
8.2.170.0090.00622.96
8.2.160.0130.00320.39
8.2.150.0050.00224.18
8.2.140.0070.00724.66
8.2.130.0050.00226.16
8.2.120.0080.00021.16
8.2.110.0040.00420.39
8.2.100.0040.00818.03
8.2.90.0050.00319.27
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0000.00817.93
8.2.50.0030.00518.07
8.2.40.0050.00318.03
8.2.30.0070.00019.53
8.2.20.0040.00417.73
8.2.10.0040.00417.97
8.2.00.0000.00717.69
8.1.280.0060.00925.92
8.1.270.0040.00423.91
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0030.00623.84
8.1.230.0000.01018.97
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.22
8.1.190.0000.00817.23
8.1.180.0030.00518.10
8.1.170.0040.00718.54
8.1.160.0040.00421.86
8.1.150.0000.00718.72
8.1.140.0000.00717.36
8.1.130.0000.00717.81
8.1.120.0070.00017.41
8.1.110.0060.00317.36
8.1.100.0080.00017.27
8.1.90.0000.00717.41
8.1.80.0030.00317.35
8.1.70.0030.00317.31
8.1.60.0040.00417.42
8.1.50.0060.00317.40
8.1.40.0030.00517.37
8.1.30.0030.00617.53
8.1.20.0040.00417.60
8.1.10.0000.00717.45
8.1.00.0030.00617.36
8.0.300.0000.00918.77
8.0.290.0000.00816.75
8.0.280.0000.00718.38
8.0.270.0020.00517.05
8.0.260.0030.00317.29
8.0.250.0000.00616.92
8.0.240.0000.00816.95
8.0.230.0000.00716.84
8.0.220.0070.00016.78
8.0.210.0020.00516.90
8.0.200.0000.00616.94
8.0.190.0050.00316.98
8.0.180.0000.00916.93
8.0.170.0050.00316.97
8.0.160.0040.00416.74
8.0.150.0040.00416.83
8.0.140.0070.00016.82
8.0.130.0030.00313.35
8.0.120.0040.00416.80
8.0.110.0000.00716.77
8.0.100.0000.00716.68
8.0.90.0030.00416.90
8.0.80.0000.01516.85
8.0.70.0040.00416.92
8.0.60.0080.00016.88
8.0.50.0040.00416.75
8.0.30.0070.01217.06
8.0.20.0130.00917.40
8.0.10.0000.00816.82
8.0.00.0100.00716.79
7.4.330.0000.00515.06
7.4.320.0070.00016.50
7.4.300.0000.00716.50
7.4.290.0030.00316.50
7.4.280.0100.00016.42
7.4.270.0030.00316.45
7.4.260.0040.00416.49
7.4.250.0070.00016.54
7.4.240.0030.00416.47
7.4.230.0030.00316.53
7.4.220.0140.00316.45
7.4.210.0110.00316.43
7.4.200.0000.00716.51
7.4.160.0090.00916.40
7.4.150.0140.01117.40
7.4.140.0060.01217.86
7.4.130.0080.00816.46
7.4.120.0100.00716.38
7.4.110.0070.01016.44
7.4.100.0030.01316.45
7.4.90.0140.00416.28
7.4.80.0170.00019.39
7.4.70.0070.01016.51
7.4.60.0070.01116.34
7.4.50.0030.00516.56
7.4.40.0060.00916.50
7.4.30.0130.00716.57
7.4.00.0070.01114.85
7.3.330.0050.00012.93
7.3.320.0060.00013.08
7.3.310.0000.00616.24
7.3.300.0070.00016.14
7.3.290.0030.01016.14
7.3.280.0070.00816.18
7.3.270.0170.00017.40
7.3.260.0090.00916.57
7.3.250.0090.00916.47
7.3.240.0070.01116.24
7.3.230.0090.00916.41
7.3.210.0130.00616.47
7.3.200.0030.01419.39
7.3.190.0140.00316.38
7.3.180.0080.00816.56
7.3.170.0040.01116.51
7.3.160.0110.00516.18
7.3.120.0060.01115.38
7.3.110.0120.00515.56
7.3.100.0060.01015.62
7.3.90.0040.01115.52
7.3.80.0070.00715.57
7.3.70.0060.00915.44
7.3.60.0070.00815.45
7.3.50.0040.00815.56
7.3.40.0030.00915.48
7.3.30.0040.00815.58
7.3.20.0060.00716.82
7.3.10.0040.00916.76
7.3.00.0030.01116.79
7.2.330.0050.01416.46
7.2.320.0030.01616.41
7.2.310.0090.00816.53
7.2.300.0190.00616.26
7.2.290.0110.00516.48
7.2.250.0050.01414.86
7.2.240.0080.01115.71
7.2.230.0060.01115.54
7.2.220.0010.01015.63
7.2.210.0040.01315.67
7.2.200.0090.00515.69
7.2.190.0070.00715.69
7.2.180.0080.00715.62
7.2.170.0060.00915.64
7.2.160.0030.01017.15
7.2.150.0090.00917.15
7.2.140.0060.00317.15
7.2.130.0050.00517.15
7.2.120.0090.00617.15
7.2.110.0060.00917.15
7.2.100.0100.00317.15
7.2.90.0060.00617.15
7.2.80.0030.00717.15
7.2.70.0080.00817.15
7.2.60.0000.01417.15
7.2.50.0060.00317.15
7.2.40.0040.01117.15
7.2.30.0030.00617.15
7.2.20.0100.00717.15
7.2.10.0110.00717.15
7.2.00.0030.01017.15
7.1.330.0050.00916.13
7.1.320.0020.01016.20
7.1.310.0070.00716.20
7.1.300.0050.00616.19
7.1.290.0040.01016.15
7.1.280.0050.00616.21
7.1.270.0040.01016.22
7.1.260.0060.00716.20
7.1.250.0070.00717.15
7.1.200.0040.01115.66
7.1.70.0070.00016.79
7.1.60.0100.01419.46
7.1.50.0140.01016.94
7.1.00.0070.07022.30
7.0.200.0030.00716.69
7.0.140.0100.06321.99
7.0.60.0070.06320.04
7.0.50.0130.04717.91
7.0.40.0000.04719.96
7.0.30.0230.04720.09
7.0.20.0330.06320.04
7.0.10.0100.08320.16
7.0.00.0100.08020.00
5.6.280.0030.07320.91
5.6.210.0200.07020.61
5.6.200.0030.08318.16
5.6.190.0030.08720.67
5.6.180.0200.05720.67
5.6.170.0300.07020.51
5.6.160.0030.04020.50
5.6.150.0100.07018.11
5.6.140.0100.07718.18
5.6.130.0100.08318.21
5.6.120.0100.04320.89
5.6.110.0100.08020.97
5.6.100.0230.05721.00
5.6.90.0100.03321.07
5.6.80.0170.05720.34
5.6.70.3570.04020.49
5.5.350.0200.07320.46
5.5.340.0100.03717.89
5.5.330.0100.04020.07
5.5.320.0200.07720.51
5.5.310.0300.03020.20
5.5.300.0170.05717.98
5.5.290.0130.07317.98
5.5.280.0130.04020.76
5.5.270.0070.06720.87
5.5.260.0130.05720.76
5.5.250.0000.06020.55
5.5.240.0200.05320.10
5.4.450.0170.04719.42
5.4.440.0300.03319.21
5.4.430.0570.07319.42
5.4.420.0230.03019.57
5.4.410.0370.04719.44
5.4.400.0270.03319.09
5.4.390.0430.03018.79
5.4.380.0270.05718.73
5.4.370.0370.06718.64
5.4.360.0530.05318.64
5.4.350.0430.07018.65
5.4.340.0270.05018.73
5.4.320.0060.03712.45
5.4.310.0060.03712.45
5.4.300.0050.03912.45
5.4.290.0070.03512.45
5.4.280.0070.03312.34
5.4.270.0060.03412.35
5.4.260.0080.03812.35
5.4.250.0050.03712.34
5.4.240.0050.03512.35
5.4.230.0050.04512.34
5.4.220.0070.03412.34
5.4.210.0060.04312.34
5.4.200.0060.05012.34
5.4.190.0060.04112.34
5.4.180.0080.03212.33
5.4.170.0070.05612.35
5.4.160.0060.04412.34
5.4.150.0030.03712.34
5.4.140.0070.04412.02
5.4.130.0060.03312.01
5.4.120.0040.03511.97
5.4.110.0080.03311.96
5.4.100.0070.03211.96
5.4.90.0090.03811.96
5.4.80.0040.03911.96
5.4.70.0030.03611.96
5.4.60.0060.03311.96
5.4.50.0030.03911.96
5.4.40.0040.03511.95
5.4.30.0030.03711.95
5.4.20.0050.04011.95
5.4.10.0100.03311.95
5.4.00.0070.03311.44
5.3.290.0070.04612.80
5.3.280.0060.04812.71
5.3.270.0060.03812.72
5.3.260.0060.03812.72
5.3.250.0040.03912.72
5.3.240.0060.03712.71
5.3.230.0040.03912.71
5.3.220.0030.03912.68
5.3.210.0030.04112.68
5.3.200.0060.03512.68
5.3.190.0030.04012.68
5.3.180.0060.03512.67
5.3.170.0050.03612.67
5.3.160.0050.03712.67
5.3.150.0050.03712.68
5.3.140.0060.03512.66
5.3.130.0050.03812.65
5.3.120.0060.03812.66
5.3.110.0100.05112.66
5.3.100.0020.04012.12
5.3.90.0040.03712.09
5.3.80.0060.03512.07
5.3.70.0050.04212.08
5.3.60.0030.03912.07
5.3.50.0050.03712.00
5.3.40.0040.03812.00
5.3.30.0040.03811.95
5.3.20.0060.03411.72
5.3.10.0040.03611.70
5.3.00.0060.03511.68
5.2.170.0040.0309.18
5.2.160.0050.0289.18
5.2.150.0040.0309.18
5.2.140.0030.0329.18
5.2.130.0040.0329.14
5.2.120.0040.0289.14
5.2.110.0040.0289.15
5.2.100.0040.0279.14
5.2.90.0050.0279.14
5.2.80.0050.0299.14
5.2.70.0020.0329.14
5.2.60.0040.0319.09
5.2.50.0010.0339.06
5.2.40.0040.0289.03
5.2.30.0050.0289.02
5.2.20.0050.0289.01
5.2.10.0050.0278.92
5.2.00.0030.0298.78
5.1.60.0020.0278.07
5.1.50.0040.0258.06
5.1.40.0040.0238.05
5.1.30.0040.0258.39
5.1.20.0050.0258.42
5.1.10.0020.0298.14
5.1.00.0040.0268.14
5.0.50.0030.0206.63
5.0.40.0030.0196.48
5.0.30.0030.0316.29
5.0.20.0020.0206.27
5.0.10.0020.0216.23
5.0.00.0030.0316.23
4.4.90.0030.0154.78
4.4.80.0010.0174.76
4.4.70.0010.0174.75
4.4.60.0020.0164.75
4.4.50.0040.0144.77
4.4.40.0020.0254.71
4.4.30.0000.0184.76
4.4.20.0040.0144.84
4.4.10.0040.0154.85
4.4.00.0030.0344.76
4.3.110.0040.0214.67
4.3.100.0030.0224.66
4.3.90.0010.0234.64
4.3.80.0020.0294.58
4.3.70.0020.0154.63
4.3.60.0030.0144.63
4.3.50.0000.0174.63
4.3.40.0020.0244.54
4.3.30.0000.0183.29
4.3.20.0010.0173.26
4.3.10.0010.0163.22
4.3.00.0030.01718.56

preferences:
46.77 ms | 401 KiB | 5 Q