3v4l.org

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

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)
8.3.60.0130.00316.63
8.3.50.0110.00822.76
8.3.40.0040.01118.34
8.3.30.0110.00418.87
8.3.20.0040.00420.09
8.3.10.0000.00723.50
8.3.00.0080.00019.22
8.2.180.0070.00718.54
8.2.170.0040.01122.96
8.2.160.0110.00420.35
8.2.150.0060.00824.18
8.2.140.0120.00624.66
8.2.130.0050.00226.16
8.2.120.0080.00020.90
8.2.110.0100.00020.35
8.2.100.0040.00717.84
8.2.90.0030.00619.05
8.2.80.0080.00017.97
8.2.70.0040.00417.38
8.2.60.0030.00517.91
8.2.50.0120.00018.07
8.2.40.0090.00018.06
8.2.30.0050.00219.43
8.2.20.0040.00417.63
8.2.10.0000.00718.04
8.2.00.0000.00717.65
8.1.280.0070.00725.92
8.1.270.0060.00322.14
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0100.00022.05
8.1.230.0040.00719.15
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0050.00317.22
8.1.180.0040.00418.10
8.1.170.0080.00318.48
8.1.160.0000.00721.86
8.1.150.0030.00518.81
8.1.140.0000.00717.36
8.1.130.0030.00317.86
8.1.120.0030.00517.41
8.1.110.0040.00417.45
8.1.100.0030.00317.31
8.1.90.0000.00717.27
8.1.80.0030.00317.41
8.1.70.0000.00717.33
8.1.60.0000.00817.46
8.1.50.0000.00817.44
8.1.40.0030.00617.31
8.1.30.0030.00617.44
8.1.20.0040.00417.45
8.1.10.0040.00417.44
8.1.00.0030.00517.29
8.0.300.0060.00318.77
8.0.290.0040.00416.63
8.0.280.0030.00318.43
8.0.270.0030.00317.23
8.0.260.0000.00617.18
8.0.250.0000.00716.93
8.0.240.0070.00016.86
8.0.230.0030.00316.74
8.0.220.0050.00216.74
8.0.210.0080.00016.68
8.0.200.0030.00316.74
8.0.190.0040.00416.88
8.0.180.0040.00916.80
8.0.170.0080.00016.85
8.0.160.0040.00416.79
8.0.150.0000.00716.76
8.0.140.0030.00316.78
8.0.130.0050.00013.29
8.0.120.0090.00016.77
8.0.110.0000.00716.77
8.0.100.0000.00716.84
8.0.90.0040.00416.84
8.0.80.0100.00716.86
8.0.70.0040.00416.88
8.0.60.0000.00816.64
8.0.50.0000.00816.80
8.0.30.0130.00716.98
8.0.20.0160.00317.40
8.0.10.0000.00716.74
8.0.00.0080.00916.66
7.4.330.0030.00315.13
7.4.320.0000.00616.51
7.4.300.0060.00016.40
7.4.290.0000.00716.56
7.4.280.0060.00316.43
7.4.270.0000.00616.51
7.4.260.0070.00016.53
7.4.250.0000.00716.39
7.4.240.0040.00316.44
7.4.230.0070.00016.41
7.4.220.0120.00616.58
7.4.210.0030.01316.39
7.4.200.0030.00316.62
7.4.160.0080.00816.23
7.4.150.0030.01417.40
7.4.140.0110.00917.86
7.4.130.0130.00616.35
7.4.120.0120.00516.46
7.4.110.0030.01416.36
7.4.100.0120.00816.43
7.4.90.0110.00616.35
7.4.80.0100.00619.39
7.4.70.0040.01816.22
7.4.60.0080.01116.36
7.4.50.0030.00616.43
7.4.40.0040.01216.34
7.4.30.0030.01316.25
7.4.00.0100.00615.10
7.3.330.0050.00012.98
7.3.320.0000.00513.11
7.3.310.0030.00316.21
7.3.300.0000.00716.09
7.3.290.0110.00316.16
7.3.280.0100.00716.13
7.3.270.0100.00717.40
7.3.260.0100.01116.29
7.3.250.0150.00316.13
7.3.240.0030.01316.16
7.3.230.0130.00616.39
7.3.210.0130.00316.26
7.3.200.0110.00619.39
7.3.190.0070.01016.29
7.3.180.0100.01016.08
7.3.170.0090.00616.27
7.3.160.0030.01416.35
7.2.330.0170.00816.17
7.2.320.0040.01216.60
7.2.310.0100.00616.59
7.2.300.0160.00516.60
7.2.290.0100.00716.25
7.2.00.0030.01219.04
7.1.100.0120.00618.15
7.1.70.0000.01116.76
7.1.60.0100.01419.46
7.1.50.0030.02116.86
7.1.00.0000.08722.40
7.0.200.0030.00316.71
7.0.140.0030.07322.04
7.0.60.0130.07720.00
7.0.50.0030.07317.77
7.0.40.0170.06020.23
7.0.30.0270.06020.32
7.0.20.0400.06720.33
7.0.10.0170.07320.01
7.0.00.0030.04320.00
5.6.280.0000.07720.85
5.6.210.0100.08020.74
5.6.200.0000.05018.13
5.6.190.0070.06320.63
5.6.180.0270.05020.43
5.6.170.0070.05020.54
5.6.160.0070.08020.41
5.6.150.0030.04018.18
5.6.140.0100.08018.09
5.6.130.0100.08018.21
5.6.120.0070.07720.98
5.6.110.0030.04020.95
5.6.100.0070.08721.03
5.6.90.0170.05021.10
5.6.80.0100.07720.50
5.5.350.0300.07320.29
5.5.340.0100.04717.93
5.5.330.0100.03720.29
5.5.320.0030.05720.30
5.5.310.0300.07320.30
5.5.300.0070.03717.98
5.5.290.0070.05317.91
5.5.280.0070.05320.79
5.5.270.0070.08320.96
5.5.260.0070.03720.78
5.5.250.0030.08320.77
5.5.240.0030.07720.25
5.4.450.0600.06319.32
5.4.440.0770.07719.63
5.4.430.0430.06719.60
5.4.420.0830.04719.40
5.4.410.0700.05319.50
5.4.400.0770.05319.15
5.4.390.0770.06319.12
5.4.380.0670.06018.72
5.4.370.0370.05718.69
5.4.360.0970.07318.49
5.4.350.0330.05318.45
5.4.340.0430.05318.77
5.4.320.0050.03512.45
5.4.310.0070.04312.45
5.4.300.0050.03612.45
5.4.290.0020.04112.45
5.4.280.0080.03212.34
5.4.270.0020.03812.34
5.4.260.0060.03612.35
5.4.250.0010.04112.34
5.4.240.0080.03612.34
5.4.230.0060.04112.34
5.4.220.0080.03312.34
5.4.210.0020.03812.34
5.4.200.0040.03912.34
5.4.190.0080.03812.33
5.4.180.0060.03712.33
5.4.170.0080.03312.34
5.4.160.0050.03712.34
5.4.150.0070.03512.34
5.4.140.0050.03612.02
5.4.130.0030.03812.01
5.4.120.0060.03711.97
5.4.110.0060.03611.96
5.4.100.0050.03911.96
5.4.90.0030.04411.96
5.4.80.0040.03611.96
5.4.70.0090.03011.96
5.4.60.0090.03411.96
5.4.50.0070.03311.96
5.4.40.0050.03511.95
5.4.30.0030.03811.95
5.4.20.0130.03411.95
5.4.10.0080.03211.95
5.4.00.0110.03411.43
5.3.290.0040.04012.80
5.3.280.0050.03912.71
5.3.270.0100.03712.72
5.3.260.0060.04112.72
5.3.250.0060.03712.72
5.3.240.0070.03712.72
5.3.230.0070.03612.71
5.3.220.0030.04012.68
5.3.210.0090.03412.68
5.3.200.0040.03712.68
5.3.190.0070.03612.68
5.3.180.0070.03512.68
5.3.170.0080.03412.67
5.3.160.0050.03612.68
5.3.150.0070.03612.67
5.3.140.0040.03712.66
5.3.130.0060.04312.66
5.3.120.0070.03712.66
5.3.110.0100.03612.65
5.3.100.0050.03712.12
5.3.90.0060.03612.08
5.3.80.0070.03612.07
5.3.70.0050.03612.07
5.3.60.0080.03612.06
5.3.50.0060.03412.00
5.3.40.0050.03512.00
5.3.30.0040.03511.95
5.3.20.0060.03411.73
5.3.10.0060.03811.70
5.3.00.0070.03411.68
5.2.170.0050.0299.18
5.2.160.0020.0319.18
5.2.150.0050.0309.18
5.2.140.0060.0299.18
5.2.130.0060.0279.14
5.2.120.0080.0279.14
5.2.110.0070.0279.14
5.2.100.0040.0299.14
5.2.90.0050.0289.14
5.2.80.0080.0339.14
5.2.70.0040.0319.14
5.2.60.0040.0299.09
5.2.50.0060.0279.05
5.2.40.0050.0289.04
5.2.30.0050.0289.01
5.2.20.0050.0369.00
5.2.10.0060.0258.92
5.2.00.0050.0338.79
5.1.60.0060.0278.06
5.1.50.0040.0258.06
5.1.40.0070.0248.05
5.1.30.0020.0278.40
5.1.20.0090.0218.42
5.1.10.0060.0288.14
5.1.00.0050.0248.14
5.0.50.0020.0226.63
5.0.40.0030.0196.48
5.0.30.0030.0406.29
5.0.20.0020.0206.26
5.0.10.0030.0196.24
5.0.00.0020.0316.23
4.4.90.0020.0154.78
4.4.80.0020.0164.76
4.4.70.0040.0134.76
4.4.60.0020.0154.75
4.4.50.0020.0234.77
4.4.40.0030.0244.71
4.4.30.0000.0184.75
4.4.20.0010.0164.85
4.4.10.0020.0164.85
4.4.00.0000.0264.76
4.3.110.0030.0154.67
4.3.100.0020.0154.67
4.3.90.0010.0164.64
4.3.80.0000.0264.58
4.3.70.0030.0144.63
4.3.60.0050.0164.62
4.3.50.0040.0184.63
4.3.40.0020.0244.54
4.3.30.0000.0183.28
4.3.20.0040.0153.26
4.3.10.0030.0143.22
4.3.00.0270.0237.88

preferences:
46.25 ms | 401 KiB | 5 Q