3v4l.org

run code in 300+ PHP versions simultaneously
<?php function merge() { return array_reduce(array_slice(func_get_args(), 1), 'array_merge', []); } var_dump(merge([1, 2, 3], [4, 5, 6], ['a' => 'b'], ['a' => '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)
8.3.40.0090.00618.46
8.3.30.0100.01018.88
8.3.20.0040.00420.15
8.3.10.0080.00023.56
8.3.00.0070.00317.50
8.2.170.0100.00722.96
8.2.160.0070.01320.35
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.19
8.2.110.0040.00420.47
8.2.100.0040.00718.09
8.2.90.0000.00919.09
8.2.80.0000.00817.97
8.2.70.0080.00017.59
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0060.00318.22
8.2.30.0070.00018.06
8.2.20.0050.00217.67
8.2.10.0000.00717.98
8.2.00.0030.00617.55
8.1.270.0080.00023.76
8.1.260.0000.00826.35
8.1.250.0000.00828.09
8.1.240.0060.00323.92
8.1.230.0060.00618.97
8.1.220.0090.00017.79
8.1.210.0030.00518.77
8.1.200.0070.00317.13
8.1.190.0050.00317.35
8.1.180.0060.00318.10
8.1.170.0050.00318.36
8.1.160.0030.00522.02
8.1.150.0070.00018.81
8.1.140.0000.00717.38
8.1.130.0000.01017.81
8.1.120.0000.00717.43
8.1.110.0040.00417.45
8.1.100.0070.00017.30
8.1.90.0040.00417.45
8.1.80.0070.00017.45
8.1.70.0050.00217.41
8.1.60.0030.00617.52
8.1.50.0080.00017.52
8.1.40.0040.00417.34
8.1.30.0000.00817.49
8.1.20.0040.00417.54
8.1.10.0000.00717.44
8.1.00.0040.00417.34
8.0.300.0000.00818.77
8.0.290.0000.00816.63
8.0.280.0040.00418.26
8.0.270.0070.00017.11
8.0.260.0040.00417.12
8.0.250.0030.00316.81
8.0.240.0030.00316.79
8.0.230.0000.00816.81
8.0.220.0030.00316.85
8.0.210.0030.00516.81
8.0.200.0030.00316.78
8.0.190.0040.00416.79
8.0.180.0070.00316.91
8.0.170.0080.00016.79
8.0.160.0070.00016.80
8.0.150.0000.00816.76
8.0.140.0040.00416.80
8.0.130.0040.00413.27
8.0.120.0080.00016.69
8.0.110.0040.00416.80
8.0.100.0040.00416.68
8.0.90.0030.00316.81
8.0.80.0070.01416.72
8.0.70.0000.00716.72
8.0.60.0000.00716.82
8.0.50.0040.00416.69
8.0.30.0090.01117.01
8.0.20.0100.01017.40
8.0.10.0040.00416.90
8.0.00.0080.01016.75
7.4.330.0000.00515.00
7.4.320.0030.00316.43
7.4.300.0030.00316.45
7.4.290.0030.00316.45
7.4.280.0040.00716.43
7.4.270.0030.00316.54
7.4.260.0100.00016.43
7.4.250.0000.00816.30
7.4.240.0020.00516.56
7.4.230.0040.00416.37
7.4.220.0000.01816.57
7.4.210.0100.00716.50
7.4.200.0070.00016.28
7.4.160.0120.00316.51
7.4.150.0070.01117.40
7.4.140.0100.00917.86
7.4.130.0050.01416.46
7.4.120.0090.00816.45
7.4.110.0000.01816.35
7.4.100.0100.00716.36
7.4.90.0090.00916.41
7.4.80.0030.01319.39
7.4.70.0090.00916.41
7.4.60.0030.01616.39
7.4.50.0000.01016.34
7.4.40.0100.00916.28
7.4.30.0060.01016.51
7.4.00.0070.00914.81
7.3.330.0060.00013.23
7.3.320.0060.00013.12
7.3.310.0000.00716.13
7.3.300.0060.00016.28
7.3.290.0130.00716.22
7.3.280.0040.01316.22
7.3.270.0210.00317.40
7.3.260.0120.00616.57
7.3.250.0030.01416.25
7.3.240.0070.01116.38
7.3.230.0170.00016.41
7.3.210.0070.01016.48
7.3.200.0110.01119.39
7.3.190.0100.00716.48
7.3.180.0070.00716.42
7.3.170.0140.00316.47
7.3.160.0060.01016.37
7.3.120.0070.01114.79
7.3.110.0040.01414.71
7.3.100.0020.01314.89
7.3.90.0050.01015.02
7.3.80.0080.00714.69
7.3.70.0110.00214.73
7.3.60.0070.00614.48
7.3.50.0050.01014.76
7.3.40.0090.00714.73
7.3.30.0050.00714.61
7.3.20.0070.01016.50
7.3.10.0070.01116.48
7.3.00.0060.00316.52
7.2.330.0150.00416.61
7.2.320.0060.01116.31
7.2.310.0080.00816.27
7.2.300.0060.00916.64
7.2.290.0110.00616.57
7.2.250.0060.01114.87
7.2.240.0110.00914.94
7.2.230.0050.00914.83
7.2.220.0050.01015.13
7.2.210.0050.01214.85
7.2.200.0090.00914.88
7.2.190.0040.01014.94
7.2.180.0050.01014.69
7.2.170.0060.00614.77
7.2.60.0090.00616.73
7.1.330.0090.00515.57
7.1.320.0110.00515.75
7.1.310.0050.01215.68
7.1.300.0080.00615.72
7.1.290.0050.00915.73
7.1.280.0070.00615.63
7.1.270.0090.00615.58
7.1.260.0070.00515.73
7.1.200.0030.01015.62
7.1.100.0790.01015.91
7.1.70.0040.00416.79
7.1.60.0160.01019.32
7.1.50.0180.00734.75
7.1.00.0000.08022.25
7.0.200.0040.00416.73
7.0.140.0030.07022.07
7.0.60.0130.07319.87
7.0.50.0370.02317.88
7.0.40.0070.04320.11
7.0.30.0500.07020.06
7.0.20.0300.07320.29
7.0.10.0100.04020.16
7.0.00.0100.08320.29
5.6.280.0070.07020.91
5.6.210.0100.08020.51
5.6.200.0000.04318.29
5.6.190.0070.04320.39
5.6.180.0270.06720.43
5.6.170.0370.07020.56
5.6.160.0130.07720.53
5.6.150.0100.05318.16
5.6.140.0070.08318.15
5.6.130.0070.05318.28
5.6.120.0030.07020.93
5.6.110.0070.08021.12
5.6.100.0130.07320.99
5.6.90.0070.04020.98
5.6.80.0100.05720.39
5.5.350.0170.06720.38
5.5.340.0170.07018.03
5.5.330.0100.08020.32
5.5.320.0400.05320.30
5.5.310.0270.08020.51
5.5.300.0070.08318.09
5.5.290.0030.04317.99
5.5.280.0100.05020.69
5.5.270.0130.04020.78
5.5.260.0070.08320.78
5.5.250.0100.07320.58
5.5.240.0200.06320.13
5.4.450.0870.04019.47
5.4.440.0700.06319.38
5.4.430.0670.08019.45
5.4.420.0730.00019.52
5.4.410.0630.00019.46
5.4.400.0630.00019.33
5.4.390.0630.00019.09
5.4.380.0630.00019.13
5.4.370.0630.00019.06
5.4.360.0600.00019.25
5.4.350.0630.00019.00
5.4.340.0060.03712.02
5.4.320.0060.03812.51
5.4.310.0050.04012.50
5.4.300.0100.04712.50
5.4.290.0060.04512.50
5.4.280.0060.04012.40
5.4.270.0040.04012.39
5.4.260.0030.04312.40
5.4.250.0080.03612.39
5.4.240.0050.03812.40
5.4.230.0100.03912.39
5.4.220.0060.03712.39
5.4.210.0060.04112.39
5.4.200.0070.04012.39
5.4.190.0090.03512.39
5.4.180.0080.03812.39
5.4.170.0060.03912.39
5.4.160.0070.04312.39
5.4.150.0060.03812.39
5.4.140.0070.03812.07
5.4.130.0070.03712.06
5.4.120.0070.03612.02
5.4.110.0060.03912.01
5.4.100.0020.04012.02
5.4.90.0080.03912.02
5.4.80.0060.03712.02
5.4.70.0030.03812.01
5.4.60.0110.03012.01
5.4.50.0040.03912.01
5.4.40.0050.04212.00
5.4.30.0070.04211.99
5.4.20.0070.04111.99
5.4.10.0050.04011.99
5.4.00.0050.03711.48
5.3.290.0060.04012.80
5.3.280.0070.04212.71
5.3.270.0080.03812.72
5.3.260.0030.04812.72
5.3.250.0070.04312.72
5.3.240.0080.03812.72
5.3.230.0070.04112.71
5.3.220.0040.04012.68
5.3.210.0070.03912.68
5.3.200.0080.03712.68
5.3.190.0090.04212.68
5.3.180.0030.03912.68
5.3.170.0060.04012.67
5.3.160.0060.03812.68
5.3.150.0090.04512.67
5.3.140.0070.04212.66
5.3.130.0090.04312.66
5.3.120.0090.04912.66
5.3.110.0070.05212.66
5.3.100.0060.04912.13
5.3.90.0060.04712.11
5.3.80.0050.04312.09
5.3.70.0040.04012.09
5.3.60.0060.04312.09
5.3.50.0090.04012.02
5.3.40.0090.04012.02
5.3.30.0080.04011.98
5.3.20.0070.04211.76
5.3.10.0130.04311.74
5.3.00.0060.04511.71
5.2.170.0060.0299.21
5.2.160.0020.0459.21
5.2.150.0060.0329.21
5.2.140.0040.0339.21
5.2.130.0080.0359.18
5.2.120.0060.0379.18
5.2.110.0130.0259.18
5.2.100.0040.0379.18
5.2.90.0040.0309.19
5.2.80.0040.0339.18
5.2.70.0050.0349.18
5.2.60.0070.0329.13
5.2.50.0040.0379.10
5.2.40.0020.0329.07
5.2.30.0050.0319.05
5.2.20.0040.0299.04
5.2.10.0050.0288.95
5.2.00.0060.0288.80
5.1.60.0050.0258.09
5.1.50.0070.0238.08
5.1.40.0030.0278.07
5.1.30.0040.0288.42
5.1.20.0090.0348.44
5.1.10.0070.0328.16
5.1.00.0030.0288.16
5.0.50.0050.0196.64
5.0.40.0020.0226.50
5.0.30.0030.0326.31
5.0.20.0050.0186.29
5.0.10.0030.0206.25
5.0.00.0030.0316.25
4.4.90.0030.0174.78
4.4.80.0030.0164.76
4.4.70.0020.0164.75
4.4.60.0030.0154.75
4.4.50.0020.0164.77
4.4.40.0020.0274.71
4.4.30.0030.0154.75
4.4.20.0040.0144.84
4.4.10.0030.0164.85
4.4.00.0030.0254.76
4.3.110.0000.0184.67
4.3.100.0040.0134.66
4.3.90.0000.0174.63
4.3.80.0040.0224.58
4.3.70.0020.0164.63
4.3.60.0020.0154.63
4.3.50.0040.0144.63
4.3.40.0030.0244.54
4.3.30.0040.0153.30
4.3.20.0030.0153.28
4.3.10.0030.0193.24
4.3.00.0170.0177.14

preferences:
44.32 ms | 400 KiB | 5 Q