3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = array( 'group 1' => array( 'test 1', 'test 2', 'test 3' ) ); $array2 = array( 'group 1' => array( 'test 1', 'test 4' ), 'group 2' => array( 'test2 1', 'test2 2', 'test 4' ) ); $merged = array_merge($array1, $array2); var_dump($merged);

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)
8.3.60.0100.00318.18
8.3.50.0130.00621.93
8.3.40.0120.00618.71
8.3.30.0070.01018.97
8.3.20.0070.00020.30
8.3.10.0050.00320.48
8.3.00.0080.00019.54
8.2.180.0120.01216.38
8.2.170.0040.01122.96
8.2.160.0110.00819.07
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0040.00422.30
8.2.110.0040.00719.27
8.2.100.0040.00817.78
8.2.90.0000.00719.28
8.2.80.0080.00017.97
8.2.70.0040.00417.25
8.2.60.0040.00417.91
8.2.50.0040.00418.07
8.2.40.0040.00418.09
8.2.30.0040.00419.21
8.2.20.0070.00017.61
8.2.10.0050.00217.92
8.2.00.0000.00717.67
8.1.280.0060.01325.92
8.1.270.0060.00323.82
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0080.00022.06
8.1.230.0070.00420.77
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.10
8.1.190.0000.00817.22
8.1.180.0080.00018.10
8.1.170.0070.00418.55
8.1.160.0070.00021.90
8.1.150.0080.00018.69
8.1.140.0000.00717.32
8.1.130.0000.00717.77
8.1.120.0000.00717.36
8.1.110.0030.00517.29
8.1.100.0050.00317.24
8.1.90.0040.00417.43
8.1.80.0030.00317.41
8.1.70.0000.00717.38
8.1.60.0030.00517.46
8.1.50.0040.00417.44
8.1.40.0000.01117.40
8.1.30.0000.00817.57
8.1.20.0000.00717.55
8.1.10.0000.00717.32
8.1.00.0060.00317.23
8.0.300.0030.00319.93
8.0.290.0040.00416.63
8.0.280.0030.00318.41
8.0.270.0000.00717.18
8.0.260.0000.00617.17
8.0.250.0040.00416.89
8.0.240.0000.00716.75
8.0.230.0000.00716.84
8.0.220.0060.00016.88
8.0.210.0060.00016.86
8.0.200.0030.00316.86
8.0.190.0090.00316.92
8.0.180.0050.00216.83
8.0.170.0000.00816.86
8.0.160.0090.00016.87
8.0.150.0030.00316.75
8.0.140.0080.00016.71
8.0.130.0000.00513.30
8.0.120.0070.00016.78
8.0.110.0040.00416.87
8.0.100.0050.00316.59
8.0.90.0040.00416.77
8.0.80.0040.01116.84
8.0.70.0040.00416.87
8.0.60.0000.00716.81
8.0.50.0040.00416.69
8.0.30.0080.01116.93
8.0.20.0130.00617.40
8.0.10.0070.00016.81
8.0.00.0090.01016.91
7.4.330.0060.00015.03
7.4.320.0070.00016.42
7.4.300.0030.00316.57
7.4.290.0000.00916.47
7.4.280.0050.00316.43
7.4.270.0030.00316.38
7.4.260.0000.00716.42
7.4.250.0040.00416.38
7.4.240.0050.00216.49
7.4.230.0030.00316.40
7.4.220.0040.01316.55
7.4.210.0030.01016.43
7.4.200.0030.00316.27
7.4.160.0070.01016.14
7.4.150.0130.00417.40
7.4.140.0110.00917.86
7.4.130.0110.00716.33
7.4.120.0110.00616.35
7.4.110.0100.01316.54
7.4.100.0100.00716.53
7.4.90.0100.00716.36
7.4.80.0040.01216.45
7.4.70.0030.01316.59
7.4.60.0110.00616.27
7.4.50.0040.00016.15
7.4.40.0120.00616.25
7.4.30.0070.01016.53
7.4.00.0030.01015.02
7.3.330.0050.00012.93
7.3.320.0000.00612.84
7.3.310.0000.00716.27
7.3.300.0050.00216.14
7.3.290.0000.01416.23
7.3.280.0090.00716.13
7.3.270.0150.00317.40
7.3.260.0140.00416.35
7.3.250.0110.00916.26
7.3.240.0060.01216.23
7.3.230.0130.00416.39
7.3.210.0090.01216.40
7.3.200.0180.00019.39
7.3.190.0170.00416.14
7.3.180.0100.00616.06
7.3.170.0050.01316.44
7.3.160.0130.01016.32
7.2.330.0100.00616.28
7.2.320.0140.00316.50
7.2.310.0110.00816.29
7.2.300.0120.00916.43
7.2.290.0090.00816.50
7.2.60.0060.01016.49
7.2.00.0000.01119.18
7.1.200.0030.00915.32
7.1.100.0030.01018.20
7.1.70.0000.00717.25
7.1.60.0060.00617.15
7.1.50.0100.01416.88
7.1.00.0070.07322.31
7.0.200.0030.01316.81
7.0.140.0100.06721.97
7.0.60.0030.08019.92
7.0.50.0070.08017.82
7.0.40.0070.05020.03
7.0.30.0400.04720.18
7.0.20.0230.07720.00
7.0.10.0030.05720.30
7.0.00.0100.07320.16
5.6.280.0030.07321.10
5.6.210.0100.07320.50
5.6.200.0170.03018.15
5.6.190.0070.04020.41
5.6.180.0470.06020.64
5.6.170.0370.06320.38
5.6.160.0130.08320.51
5.6.150.0030.05718.12
5.6.140.0100.07018.14
5.6.130.0070.07718.16
5.6.120.0130.07720.79
5.6.110.0070.08721.13
5.6.100.0130.07721.14
5.6.90.0170.07720.99
5.6.80.0070.08020.40
5.5.350.0200.02720.32
5.5.340.0130.07017.86
5.5.330.0100.08020.29
5.5.320.0300.05020.17
5.5.310.0230.04020.28
5.5.300.0100.03317.93
5.5.290.0070.08018.00
5.5.280.0000.04320.87
5.5.270.0100.08020.82
5.5.260.0130.07320.75
5.5.250.0000.07020.69
5.5.240.0130.07320.03
5.4.450.0400.04719.13
5.4.440.0400.05719.48
5.4.430.0900.05719.23
5.4.420.0770.04319.51
5.4.410.1230.07719.45
5.4.400.0930.05319.29
5.4.390.1030.06019.15
5.4.380.0300.06018.69
5.4.370.0370.05318.70
5.4.360.0430.04318.57
5.4.350.0430.05018.57
5.4.340.0500.05018.48
5.4.320.0050.03712.45
5.4.310.0040.04212.45
5.4.300.0120.03012.45
5.4.290.0060.05612.45
5.4.280.0110.03812.35
5.4.270.0090.04212.35
5.4.260.0060.04812.35
5.4.250.0090.04012.34
5.4.240.0080.03712.35
5.4.230.0090.04012.34
5.4.220.0080.03512.34
5.4.210.0060.03612.34
5.4.200.0100.03412.34
5.4.190.0050.03712.34
5.4.180.0070.04312.34
5.4.170.0070.04112.35
5.4.160.0110.04212.34
5.4.150.0100.03512.34
5.4.140.0100.03712.02
5.4.130.0060.03712.01
5.4.120.0040.03711.97
5.4.110.0040.03811.97
5.4.100.0040.04611.96
5.4.90.0050.03911.96
5.4.80.0070.03611.96
5.4.70.0060.03811.96
5.4.60.0070.04311.96
5.4.50.0070.03411.96
5.4.40.0050.03611.95
5.4.30.0090.03211.95
5.4.20.0060.04111.95
5.4.10.0080.03811.95
5.4.00.0100.03211.44
5.3.290.0060.04012.80
5.3.280.0030.04112.71
5.3.270.0070.04112.72
5.3.260.0090.03612.72
5.3.250.0080.04412.72
5.3.240.0100.04312.72
5.3.230.0070.04112.71
5.3.220.0080.04212.68
5.3.210.0050.04412.68
5.3.200.0080.04012.68
5.3.190.0110.04212.68
5.3.180.0100.03312.67
5.3.170.0090.03912.66
5.3.160.0050.03712.67
5.3.150.0110.03312.67
5.3.140.0080.04712.66
5.3.130.0090.03612.66
5.3.120.0070.04212.66
5.3.110.0070.05112.66
5.3.100.0040.03812.12
5.3.90.0060.04512.08
5.3.80.0050.03712.07
5.3.70.0090.05012.07
5.3.60.0050.03812.06
5.3.50.0110.03212.00
5.3.40.0030.03912.00
5.3.30.0060.03411.95
5.3.20.0070.03411.72
5.3.10.0080.03811.69
5.3.00.0040.04311.68
5.2.170.0050.0299.18
5.2.160.0050.0369.18
5.2.150.0070.0289.18
5.2.140.0040.0319.17
5.2.130.0020.0329.14
5.2.120.0020.0309.13
5.2.110.0060.0279.14
5.2.100.0040.0299.14
5.2.90.0070.0269.14
5.2.80.0080.0319.13
5.2.70.0060.0299.14
5.2.60.0030.0339.09
5.2.50.0070.0359.06
5.2.40.0050.0299.04
5.2.30.0070.0399.01
5.2.20.0050.0339.00
5.2.10.0060.0258.92
5.2.00.0050.0288.78
5.1.60.0040.0348.06
5.1.50.0060.0298.05
5.1.40.0060.0258.04
5.1.30.0040.0268.39
5.1.20.0050.0258.41
5.1.10.0030.0278.14
5.1.00.0030.0268.14
5.0.50.0050.0196.62
5.0.40.0050.0176.47
5.0.30.0060.0296.29
5.0.20.0020.0206.26
5.0.10.0060.0176.23
5.0.00.0070.0276.23
4.4.90.0040.0144.78
4.4.80.0050.0134.76
4.4.70.0020.0164.76
4.4.60.0030.0154.76
4.4.50.0030.0154.77
4.4.40.0050.0234.71
4.4.30.0050.0134.76
4.4.20.0030.0154.84
4.4.10.0040.0144.85
4.4.00.0040.0244.76
4.3.110.0020.0164.67
4.3.100.0030.0174.66
4.3.90.0010.0164.64
4.3.80.0040.0234.58
4.3.70.0040.0224.63
4.3.60.0050.0244.63
4.3.50.0030.0214.62
4.3.40.0070.0264.54
4.3.30.0010.0253.29
4.3.20.0010.0203.26
4.3.10.0030.0163.22
4.3.00.0100.0206.98

preferences:
52.64 ms | 401 KiB | 5 Q