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(array_merge([1, 2, 3], [4, 5, 6], ['a' => 'b'], ['a' => 'c']), 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)
8.3.60.0130.00318.05
8.3.50.0100.00821.98
8.3.40.0090.00918.71
8.3.30.0110.00419.00
8.3.20.0040.00420.34
8.3.10.0090.00023.52
8.3.00.0100.00017.38
8.2.180.0180.00416.63
8.2.170.0110.00422.96
8.2.160.0110.00320.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00422.22
8.2.110.0130.00620.35
8.2.100.0090.00317.91
8.2.90.0000.00819.05
8.2.80.0080.00017.97
8.2.70.0080.00017.38
8.2.60.0050.00617.66
8.2.50.0050.00318.07
8.2.40.0050.00318.22
8.2.30.0000.00718.08
8.2.20.0050.00317.80
8.2.10.0050.00217.95
8.2.00.0030.00617.57
8.1.280.0060.01225.92
8.1.270.0050.00523.77
8.1.260.0080.00026.35
8.1.250.0060.00328.09
8.1.240.0000.00823.88
8.1.230.0060.00619.21
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.25
8.1.190.0000.00817.23
8.1.180.0090.00018.10
8.1.170.0040.00418.64
8.1.160.0040.00421.93
8.1.150.0050.00218.84
8.1.140.0050.00317.44
8.1.130.0030.00617.70
8.1.120.0040.00417.40
8.1.110.0000.00717.33
8.1.100.0030.00317.30
8.1.90.0050.00217.30
8.1.80.0040.00417.35
8.1.70.0000.00717.35
8.1.60.0080.00017.53
8.1.50.0040.00417.42
8.1.40.0000.00917.34
8.1.30.0060.00317.60
8.1.20.0000.00817.53
8.1.10.0090.00017.41
8.1.00.0000.00717.34
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0040.00418.30
8.0.270.0040.00417.08
8.0.260.0030.00317.20
8.0.250.0040.00316.89
8.0.240.0000.00716.95
8.0.230.0040.00416.79
8.0.220.0030.00316.77
8.0.210.0030.00316.83
8.0.200.0000.00716.80
8.0.190.0050.00316.83
8.0.180.0000.00716.77
8.0.170.0000.00816.76
8.0.160.0030.00316.86
8.0.150.0040.00416.80
8.0.140.0000.00916.71
8.0.130.0030.00313.28
8.0.120.0040.00416.73
8.0.110.0040.00416.78
8.0.100.0040.00416.86
8.0.90.0080.00016.71
8.0.80.0030.01916.88
8.0.70.0040.00416.90
8.0.60.0000.00716.86
8.0.50.0000.00716.82
8.0.30.0090.01316.94
8.0.20.0040.01917.40
8.0.10.0030.00516.96
8.0.00.0110.00716.71
7.4.330.0020.00215.01
7.4.320.0060.00016.54
7.4.300.0030.00516.37
7.4.290.0000.00716.49
7.4.280.0000.00916.47
7.4.270.0070.00016.55
7.4.260.0000.00716.44
7.4.250.0040.00416.40
7.4.240.0010.00616.52
7.4.230.0030.00516.24
7.4.220.0130.00716.49
7.4.210.0070.00716.47
7.4.200.0000.00716.52
7.4.160.0030.01216.48
7.4.150.0070.01017.40
7.4.140.0100.01217.86
7.4.130.0080.01016.54
7.4.120.0090.00816.57
7.4.110.0090.01216.54
7.4.100.0100.00716.53
7.4.90.0130.01016.32
7.4.80.0150.00319.39
7.4.70.0070.01116.38
7.4.60.0120.00316.51
7.4.50.0030.00616.47
7.4.40.0100.01316.47
7.4.30.0090.00816.43
7.4.00.0090.00614.91
7.3.330.0000.00613.07
7.3.320.0000.00513.28
7.3.310.0030.00316.14
7.3.300.0000.00716.21
7.3.290.0070.00716.27
7.3.280.0120.00416.22
7.3.270.0070.01017.40
7.3.260.0120.00616.39
7.3.250.0100.00816.43
7.3.240.0080.00816.31
7.3.230.0080.00816.39
7.3.210.0070.01016.18
7.3.200.0090.01219.39
7.3.190.0100.00716.33
7.3.180.0130.00316.39
7.3.170.0000.01616.30
7.3.160.0130.00916.43
7.3.120.0060.00614.98
7.3.110.0070.01014.76
7.3.100.0040.00814.98
7.3.90.0060.00615.00
7.3.80.0030.01014.70
7.3.70.0090.00614.69
7.3.60.0070.01014.83
7.3.50.0070.01014.82
7.3.40.0150.00014.48
7.3.30.0070.01014.81
7.3.20.0140.00016.52
7.3.10.0120.00316.73
7.3.00.0070.00716.58
7.2.330.0150.00316.56
7.2.320.0080.00916.50
7.2.310.0030.01316.55
7.2.300.0070.01116.46
7.2.290.0070.01016.64
7.2.240.0070.01014.94
7.2.230.0060.00914.68
7.2.220.0030.01014.84
7.2.210.0040.00714.71
7.2.200.0040.01114.90
7.2.190.0040.00814.93
7.2.180.0030.01014.60
7.2.170.0040.00814.85
7.2.160.0070.00714.92
7.2.150.0000.01116.63
7.2.140.0160.00016.52
7.2.130.0040.00816.75
7.2.120.0030.01016.82
7.2.110.0070.01016.87
7.2.100.0070.00416.68
7.2.90.0100.00316.78
7.2.80.0000.01116.54
7.2.70.0090.00616.94
7.2.60.0050.01016.82
7.2.50.0000.01116.51
7.2.40.0000.01616.85
7.2.30.0060.00916.89
7.2.20.0150.00016.93
7.2.10.0070.00316.56
7.2.00.0060.01018.11
7.1.330.0040.00715.64
7.1.320.0030.00515.59
7.1.310.0090.00615.81
7.1.300.0060.00915.55
7.1.290.0030.01315.91
7.1.280.0110.00415.73
7.1.270.0040.01115.48
7.1.260.0110.00415.80
7.1.250.0070.00715.75
7.1.200.0090.00615.77
7.1.100.0790.00916.34
7.1.70.0040.00417.12
7.1.60.0110.01419.32
7.1.50.0150.02234.71
7.1.00.0070.07322.35
7.0.200.0030.00616.73
7.0.140.0070.06722.13
7.0.60.0100.08320.03
7.0.50.0030.04717.85
7.0.40.0070.04320.02
7.0.30.0500.07320.34
7.0.20.0200.04320.38
7.0.10.0070.07720.10
7.0.00.0030.08720.23
5.6.280.0000.07721.00
5.6.210.0070.08320.50
5.6.200.0030.04718.29
5.6.190.0070.04720.55
5.6.180.0200.08020.41
5.6.170.0430.07320.48
5.6.160.0030.05720.46
5.6.150.0030.05018.18
5.6.140.0070.08318.14
5.6.130.0170.07318.18
5.6.120.0130.07720.88
5.6.110.0130.07720.96
5.6.100.0130.08021.12
5.6.90.0100.03720.99
5.6.80.0100.06320.51
5.5.350.0170.07720.33
5.5.340.0130.07018.02
5.5.330.0100.07020.27
5.5.320.0400.07320.34
5.5.310.0270.07720.37
5.5.300.0070.05717.95
5.5.290.0000.04317.99
5.5.280.0070.05320.98
5.5.270.0000.09020.71
5.5.260.0130.07720.77
5.5.250.0070.04320.66
5.5.240.0200.07720.35
5.4.450.0730.06319.31
5.4.440.0800.05719.58
5.4.430.0330.08019.57
5.4.420.0670.00019.21
5.4.410.0670.00019.42
5.4.400.0670.00019.25
5.4.390.0630.00019.13
5.4.380.0670.00019.02
5.4.370.0670.00019.12
5.4.360.0630.00019.07
5.4.350.0630.00018.98
5.4.340.0080.04312.02
5.4.320.0060.05212.50
5.4.310.0050.04112.50
5.4.300.0070.03712.50
5.4.290.0080.04012.50
5.4.280.0060.03712.40
5.4.270.0060.03812.40
5.4.260.0080.03512.39
5.4.250.0070.04112.40
5.4.240.0090.03312.39
5.4.230.0010.04312.39
5.4.220.0110.03012.39
5.4.210.0040.04012.39
5.4.200.0060.04212.39
5.4.190.0070.03912.39
5.4.180.0030.03912.39
5.4.170.0040.03912.39
5.4.160.0080.03512.39
5.4.150.0090.03212.39
5.4.140.0080.03512.07
5.4.130.0060.03512.05
5.4.120.0080.03312.02
5.4.110.0090.03312.01
5.4.100.0100.03412.01
5.4.90.0090.04012.01
5.4.80.0080.03612.02
5.4.70.0050.03612.01
5.4.60.0050.03612.01
5.4.50.0090.03412.01
5.4.40.0060.03812.00
5.4.30.0080.03612.00
5.4.20.0050.03611.99
5.4.10.0060.03512.00
5.4.00.0100.03211.48
5.3.290.0090.03612.80
5.3.280.0080.03712.71
5.3.270.0110.03612.72
5.3.260.0070.03812.72
5.3.250.0060.03612.71
5.3.240.0070.03712.72
5.3.230.0080.04912.71
5.3.220.0080.03612.68
5.3.210.0040.04212.68
5.3.200.0040.03812.68
5.3.190.0060.03612.68
5.3.180.0080.03412.67
5.3.170.0080.04312.66
5.3.160.0070.04312.66
5.3.150.0060.04412.67
5.3.140.0070.04212.66
5.3.130.0060.04212.66
5.3.120.0090.03912.66
5.3.110.0040.04712.65
5.3.100.0050.04312.13
5.3.90.0050.04012.11
5.3.80.0110.03812.09
5.3.70.0100.03312.09
5.3.60.0080.03512.09
5.3.50.0120.03212.02
5.3.40.0080.03912.02
5.3.30.0050.03811.98
5.3.20.0080.03711.77
5.3.10.0070.03311.73
5.3.00.0100.04511.71
5.2.170.0050.0319.21
5.2.160.0040.0319.22
5.2.150.0040.0329.22
5.2.140.0060.0319.21
5.2.130.0060.0299.17
5.2.120.0070.0309.17
5.2.110.0050.0299.18
5.2.100.0050.0299.18
5.2.90.0040.0329.18
5.2.80.0040.0319.18
5.2.70.0070.0299.17
5.2.60.0050.0309.13
5.2.50.0040.0339.10
5.2.40.0070.0269.07
5.2.30.0070.0329.05
5.2.20.0060.0289.04
5.2.10.0090.0238.95
5.2.00.0050.0298.80
5.1.60.0040.0288.09
5.1.50.0060.0228.09
5.1.40.0050.0238.07
5.1.30.0040.0258.42
5.1.20.0040.0268.44
5.1.10.0060.0288.16
5.1.00.0050.0258.16
5.0.50.0050.0196.64
5.0.40.0020.0216.50
5.0.30.0040.0306.31
5.0.20.0020.0216.29
5.0.10.0010.0226.26
5.0.00.0050.0376.25
4.4.90.0020.0164.77
4.4.80.0010.0174.75
4.4.70.0060.0194.75
4.4.60.0030.0174.75
4.4.50.0050.0144.77
4.4.40.0060.0344.71
4.4.30.0040.0214.76
4.4.20.0030.0174.84
4.4.10.0040.0174.85
4.4.00.0040.0304.76
4.3.110.0070.0134.67
4.3.100.0050.0144.66
4.3.90.0050.0184.64
4.3.80.0020.0304.58
4.3.70.0030.0174.63
4.3.60.0030.0164.63
4.3.50.0040.0164.63
4.3.40.0030.0244.53
4.3.30.0040.0153.30
4.3.20.0040.0183.28
4.3.10.0020.0163.24
4.3.00.0000.0237.14

preferences:
41.24 ms | 401 KiB | 5 Q