3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(array(1,2,3),array(2),3); $b = array(array(1,2,3),array(2),3); $f = array(array(2,3,4),array(3),4); $c = array(array_merge($a, $b, $f)); $d = array_unique($c); var_dump($d);

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)
8.3.60.0090.00616.38
8.3.50.0110.00418.29
8.3.40.0040.01118.71
8.3.30.0040.01118.82
8.3.20.0040.00420.34
8.3.10.0050.00320.52
8.3.00.0040.00419.26
8.2.180.0170.00316.38
8.2.170.0120.00322.96
8.2.160.0130.00620.48
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00421.09
8.2.110.0080.00320.52
8.2.100.0040.00718.22
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0040.00417.50
8.2.60.0000.00817.91
8.2.50.0060.00318.07
8.2.40.0040.00418.03
8.2.30.0040.00419.31
8.2.20.0040.00417.62
8.2.10.0040.00418.10
8.2.00.0040.00417.73
8.1.270.0050.00323.82
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0090.00024.02
8.1.230.0060.00619.25
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0000.00817.23
8.1.190.0030.00617.23
8.1.180.0080.00018.10
8.1.170.0040.00418.66
8.1.160.0030.00522.05
8.1.150.0040.00318.93
8.1.140.0000.00717.51
8.1.130.0000.00817.81
8.1.120.0040.00317.42
8.1.110.0030.00617.46
8.1.100.0040.00417.45
8.1.90.0030.00417.33
8.1.80.0070.00017.43
8.1.70.0000.00717.34
8.1.60.0000.00917.56
8.1.50.0040.00417.42
8.1.40.0040.00417.52
8.1.30.0030.00617.59
8.1.20.0070.00017.62
8.1.10.0050.00317.50
8.1.00.0040.00417.34
8.0.300.0040.00418.77
8.0.290.0050.00216.75
8.0.280.0000.00718.29
8.0.270.0040.00417.22
8.0.260.0030.00317.25
8.0.250.0030.00316.87
8.0.240.0030.00316.97
8.0.230.0050.00216.86
8.0.220.0040.00416.88
8.0.210.0070.00016.92
8.0.200.0000.00716.88
8.0.190.0000.00716.91
8.0.180.0000.00816.87
8.0.170.0080.00016.94
8.0.160.0070.00016.83
8.0.150.0070.00016.81
8.0.140.0030.00616.86
8.0.130.0040.00413.31
8.0.120.0000.00816.75
8.0.110.0070.00016.93
8.0.100.0030.00616.93
8.0.90.0040.00416.87
8.0.80.0070.01016.85
8.0.70.0000.00716.71
8.0.60.0040.00416.79
8.0.50.0040.00416.92
8.0.30.0100.00917.01
8.0.20.0080.01417.40
8.0.10.0040.00417.09
8.0.00.0050.01216.94
7.4.330.0050.00015.08
7.4.320.0030.00316.62
7.4.300.0030.00316.50
7.4.290.0000.00716.42
7.4.280.0030.00916.59
7.4.270.0030.00316.64
7.4.260.0030.00316.38
7.4.250.0000.00716.44
7.4.240.0030.00316.54
7.4.230.0040.00416.66
7.4.220.0100.00716.50
7.4.210.0040.01016.64
7.4.200.0000.00816.59
7.4.160.0070.01116.59
7.4.150.0060.01817.40
7.4.140.0080.01017.86
7.4.130.0100.00816.58
7.4.120.0100.00916.53
7.4.110.0060.01116.48
7.4.100.0060.01216.51
7.4.90.0070.01016.34
7.4.80.0070.01019.39
7.4.70.0060.01216.46
7.4.60.0120.00316.61
7.4.50.0030.00516.24
7.4.40.0030.01416.21
7.4.30.0060.01216.42
7.4.00.0060.01015.00
7.3.330.0050.00013.05
7.3.320.0030.00313.11
7.3.310.0030.00316.34
7.3.300.0030.00316.15
7.3.290.0000.00716.15
7.3.280.0080.00716.18
7.3.270.0120.00617.40
7.3.260.0070.01116.43
7.3.250.0080.00916.32
7.3.240.0060.01116.18
7.3.230.0090.00916.39
7.3.210.0060.01216.15
7.3.200.0090.00819.39
7.3.190.0200.00316.53
7.3.180.0130.00316.52
7.3.170.0090.01216.29
7.3.160.0100.00716.52
7.2.330.0220.00016.55
7.2.320.0000.02116.69
7.2.310.0130.01016.57
7.2.300.0090.01316.56
7.2.290.0110.00516.59
7.2.60.0070.01016.82
7.2.50.0130.01016.59
7.1.200.0030.00615.71
7.1.70.0070.00016.88
7.1.60.0100.01019.61
7.1.50.0090.01516.50
7.1.00.0070.07322.54
7.0.200.0070.00016.63
7.0.140.0100.06721.96
7.0.60.0000.04319.94
7.0.50.0000.04717.88
7.0.40.0070.04720.11
7.0.30.0200.04720.21
7.0.20.0270.06020.01
7.0.10.0200.07720.00
7.0.00.0030.08720.17
5.6.280.0100.06721.11
5.6.210.0130.05020.72
5.6.200.0100.08318.12
5.6.190.0100.07020.39
5.6.180.0430.03020.67
5.6.170.0170.04020.46
5.6.160.0100.05320.44
5.6.150.0100.03318.07
5.6.140.0170.07318.21
5.6.130.0100.08018.17
5.6.120.0030.08321.09
5.6.110.0070.08721.11
5.6.100.0070.08721.01
5.6.90.0100.07020.99
5.6.80.0230.06720.48
5.5.350.0270.07320.43
5.5.340.0000.04718.02
5.5.330.0030.07720.19
5.5.320.0000.06320.21
5.5.310.0200.07020.31
5.5.300.0030.07717.96
5.5.290.0100.03717.99
5.5.280.0030.08320.77
5.5.270.0000.08320.74
5.5.260.0130.07720.76
5.5.250.0170.08020.54
5.5.240.0230.07020.14
5.4.450.0200.04719.57
5.4.440.0470.04319.15
5.4.430.0500.04319.54
5.4.420.0930.04019.47
5.4.410.0770.06719.44
5.4.400.0830.05718.89
5.4.390.1000.05719.10
5.4.380.0270.07018.43
5.4.370.0130.06018.49
5.4.360.0200.05318.66
5.4.350.0200.05718.50
5.4.340.0230.05018.45
5.4.320.0070.04212.45
5.4.310.0120.04512.45
5.4.300.0050.04412.46
5.4.290.0080.04012.45
5.4.280.0070.03612.35
5.4.270.0070.03612.35
5.4.260.0050.04012.35
5.4.250.0050.04112.35
5.4.240.0060.03612.35
5.4.230.0060.04012.34
5.4.220.0070.03612.34
5.4.210.0050.03712.34
5.4.200.0080.03612.34
5.4.190.0090.03812.34
5.4.180.0060.03812.34
5.4.170.0040.04012.35
5.4.160.0110.03612.34
5.4.150.0060.03812.34
5.4.140.0060.05112.03
5.4.130.0110.04112.02
5.4.120.0100.04711.97
5.4.110.0090.03311.97
5.4.100.0110.03311.96
5.4.90.0090.04311.97
5.4.80.0060.03811.97
5.4.70.0060.03511.96
5.4.60.0070.03411.96
5.4.50.0150.04211.96
5.4.40.0100.03211.95
5.4.30.0090.04711.95
5.4.20.0100.04211.95
5.4.10.0080.04611.95
5.4.00.0050.03611.44
5.3.290.0060.04112.80
5.3.280.0060.03812.71
5.3.270.0120.04412.73
5.3.260.0110.03812.72
5.3.250.0070.03812.72
5.3.240.0060.04812.72
5.3.230.0060.03912.71
5.3.220.0050.03912.68
5.3.210.0070.04712.68
5.3.200.0090.03812.68
5.3.190.0090.03912.68
5.3.180.0100.05712.67
5.3.170.0120.04912.67
5.3.160.0100.04112.68
5.3.150.0110.03312.67
5.3.140.0060.03712.66
5.3.130.0070.03812.66
5.3.120.0080.04812.66
5.3.110.0090.03912.66
5.3.100.0110.03612.12
5.3.90.0080.04112.08
5.3.80.0070.04112.08
5.3.70.0080.03812.08
5.3.60.0070.04212.06
5.3.50.0080.03612.00
5.3.40.0110.04212.00
5.3.30.0070.04011.95
5.3.20.0080.03611.73
5.3.10.0060.03611.70
5.3.00.0050.03711.68
5.2.170.0060.0299.18
5.2.160.0040.0309.18
5.2.150.0080.0309.18
5.2.140.0060.0409.17
5.2.130.0030.0319.14
5.2.120.0070.0309.14
5.2.110.0030.0329.14
5.2.100.0070.0299.14
5.2.90.0070.0309.14
5.2.80.0080.0309.14
5.2.70.0040.0319.14
5.2.60.0040.0349.09
5.2.50.0030.0389.06
5.2.40.0040.0299.04
5.2.30.0040.0309.01
5.2.20.0040.0339.00
5.2.10.0030.0358.93
5.2.00.0080.0298.78
5.1.60.0040.0278.07
5.1.50.0080.0268.07
5.1.40.0020.0298.05
5.1.30.0040.0288.40
5.1.20.0020.0298.42
5.1.10.0050.0258.14
5.1.00.0050.0278.14
5.0.50.0050.0246.62
5.0.40.0040.0266.48
5.0.30.0070.0386.29
5.0.20.0070.0236.26
5.0.10.0050.0276.24
5.0.00.0100.0326.23
4.4.90.0020.0244.78
4.4.80.0050.0204.76
4.4.70.0060.0154.75
4.4.60.0020.0174.75
4.4.50.0020.0174.77
4.4.40.0050.0254.71
4.4.30.0060.0214.76
4.4.20.0050.0154.85
4.4.10.0040.0154.85
4.4.00.0040.0244.76
4.3.110.0020.0184.67
4.3.100.0030.0164.67
4.3.90.0040.0154.63
4.3.80.0040.0254.58
4.3.70.0040.0144.63
4.3.60.0020.0154.62
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0030.0153.29
4.3.20.0020.0163.27
4.3.10.0010.0173.23
4.3.00.0030.01713.92

preferences:
34.95 ms | 400 KiB | 5 Q