3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = array( 'a' => 1, 'b' => 2, ); $array2 = array( 'b' => 22, 'c' => 3, ); var_dump(array_merge($array1, $array2)); var_dump($array1 + $array2); var_dump($array2 + $array1);

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)
8.3.70.0180.00016.58
8.3.60.0090.00918.43
8.3.50.0220.01022.89
8.3.40.0040.01118.76
8.3.30.0140.00018.92
8.3.20.0040.00420.21
8.3.10.0000.00823.48
8.3.00.0050.00319.10
8.2.180.0070.01516.50
8.2.170.0070.01418.73
8.2.160.0070.01022.96
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00420.94
8.2.110.0120.00020.52
8.2.100.0090.00317.91
8.2.90.0080.00017.63
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0030.00517.80
8.2.50.0000.00818.07
8.2.40.0040.00419.85
8.2.30.0000.00717.93
8.2.20.0000.00817.79
8.2.10.0000.00717.94
8.2.00.0060.00317.71
8.1.280.0070.00725.92
8.1.270.0000.00923.65
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0070.01122.33
8.1.230.0040.00820.94
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0040.00717.23
8.1.190.0040.00417.10
8.1.180.0080.00018.10
8.1.170.0080.00018.50
8.1.160.0030.00521.97
8.1.150.0050.00318.78
8.1.140.0000.00717.38
8.1.130.0030.00317.74
8.1.120.0000.00717.41
8.1.110.0000.00817.35
8.1.100.0000.00717.29
8.1.90.0030.00617.29
8.1.80.0050.00317.39
8.1.70.0030.00517.35
8.1.60.0060.00317.49
8.1.50.0030.00517.33
8.1.40.0060.00317.45
8.1.30.0030.00617.55
8.1.20.0000.00717.56
8.1.10.0040.00417.45
8.1.00.0000.00817.24
8.0.300.0040.00419.86
8.0.290.0080.00016.73
8.0.280.0000.00718.43
8.0.270.0070.00017.19
8.0.260.0040.00417.10
8.0.250.0000.00616.99
8.0.240.0000.00716.94
8.0.230.0030.00316.95
8.0.220.0000.00816.89
8.0.210.0030.00316.80
8.0.200.0040.00416.93
8.0.190.0070.00416.93
8.0.180.0050.00316.88
8.0.170.0040.00416.80
8.0.160.0040.00416.86
8.0.150.0070.00016.64
8.0.140.0030.00316.70
8.0.130.0060.00313.35
8.0.120.0040.00416.80
8.0.110.0030.00516.79
8.0.100.0070.00016.95
8.0.90.0070.00016.72
8.0.80.0060.01016.80
8.0.70.0040.00416.88
8.0.60.0000.00716.93
8.0.50.0030.00516.90
8.0.30.0150.00816.98
8.0.20.0120.00817.40
8.0.10.0060.00316.79
8.0.00.0120.00816.75
7.4.330.0030.00315.00
7.4.320.0000.00716.57
7.4.300.0030.00316.54
7.4.290.0000.00716.55
7.4.280.0030.00316.41
7.4.270.0000.00716.49
7.4.260.0000.00716.56
7.4.250.0050.00316.50
7.4.240.0040.00416.36
7.4.230.0000.00716.47
7.4.220.0030.01616.48
7.4.210.0070.00716.55
7.4.200.0030.00316.53
7.4.160.0030.01216.37
7.4.150.0060.01217.40
7.4.140.0130.00817.86
7.4.130.0080.01116.47
7.4.120.0070.01016.37
7.4.110.0030.01316.48
7.4.100.0170.00016.51
7.4.90.0090.00916.39
7.4.80.0060.01319.39
7.4.70.0130.00616.41
7.4.60.0170.00016.35
7.4.50.0040.00416.40
7.4.40.0030.01416.29
7.4.30.0080.00816.43
7.4.00.0060.01214.72
7.3.330.0000.00612.93
7.3.320.0000.00513.04
7.3.310.0030.00416.21
7.3.300.0000.00716.21
7.3.290.0070.00716.14
7.3.280.0110.00916.19
7.3.270.0090.00917.40
7.3.260.0110.00716.14
7.3.250.0140.00616.27
7.3.240.0070.01016.23
7.3.230.0120.00616.51
7.3.210.0060.01216.27
7.3.200.0110.00619.39
7.3.190.0100.00616.12
7.3.180.0130.00316.50
7.3.170.0040.01816.32
7.3.160.0160.00016.42
7.2.330.0120.00616.55
7.2.320.0070.01016.56
7.2.310.0150.00316.59
7.2.300.0130.00316.49
7.2.290.0090.00616.52
7.2.00.0030.00619.00
7.1.100.0030.00818.23
7.1.70.0030.00917.13
7.1.60.0110.01119.40
7.1.50.0070.01716.59
7.1.00.0030.07722.57
7.0.200.0030.00714.57
7.0.140.0030.07721.97
7.0.60.0100.08719.84
7.0.50.0030.06017.87
7.0.40.0070.08020.02
7.0.30.0370.07020.18
7.0.20.0270.08320.17
7.0.10.0030.09020.22
7.0.00.0070.05720.03
5.6.280.0070.07021.11
5.6.210.0100.06720.68
5.6.200.0000.05718.19
5.6.190.0100.05320.64
5.6.180.0270.04320.77
5.6.170.0370.06720.38
5.6.160.0070.08020.32
5.6.150.0070.08718.16
5.6.140.0100.08018.11
5.6.130.0000.04318.07
5.6.120.0100.03720.96
5.6.110.0130.08021.12
5.6.100.0100.07021.10
5.6.90.0330.04320.94
5.6.80.0070.07320.52
5.5.350.3570.04320.46
5.5.340.0100.04018.01
5.5.330.0100.08320.21
5.5.320.0200.05020.34
5.5.310.0300.06720.50
5.5.300.0100.08018.05
5.5.290.0070.03717.96
5.5.280.0030.09020.73
5.5.270.0130.08020.71
5.5.260.0130.08020.67
5.5.250.0000.04320.68
5.5.240.0000.08320.28
5.4.450.0900.05719.25
5.4.440.0800.06019.47
5.4.430.0730.06019.43
5.4.420.0870.05019.64
5.4.410.0800.05019.43
5.4.400.0030.05719.15
5.4.390.0670.05019.21
5.4.380.0230.04718.68
5.4.370.0070.05718.46
5.4.360.0070.05318.63
5.4.350.0080.05911.97
5.4.340.0200.08311.97
5.4.320.0080.03512.45
5.4.310.0090.03512.45
5.4.300.0080.03312.46
5.4.290.0060.03712.45
5.4.280.0060.04112.34
5.4.270.0080.03412.34
5.4.260.0090.04212.34
5.4.250.0040.04912.35
5.4.240.0050.03712.34
5.4.230.0070.03612.34
5.4.220.0120.03312.34
5.4.210.0050.03812.34
5.4.200.0070.03612.34
5.4.190.0040.03812.34
5.4.180.0070.04212.34
5.4.170.0060.04712.35
5.4.160.0050.03712.34
5.4.150.0100.03212.34
5.4.140.0060.04212.02
5.4.130.0060.04512.01
5.4.120.0070.04111.96
5.4.110.0060.03511.96
5.4.100.0080.04911.96
5.4.90.0100.03411.96
5.4.80.0060.04211.96
5.4.70.0070.03811.96
5.4.60.0060.03511.96
5.4.50.0080.04511.96
5.4.40.0070.04211.95
5.4.30.0060.03511.95
5.4.20.0070.04611.95
5.4.10.0060.03511.95
5.4.00.0040.03711.43
5.3.290.0070.04812.80
5.3.280.0060.03712.70
5.3.270.0050.04012.72
5.3.260.0070.04312.72
5.3.250.0050.05712.72
5.3.240.0070.03512.71
5.3.230.0080.03512.71
5.3.220.0070.04212.68
5.3.210.0060.05512.68
5.3.200.0050.03812.68
5.3.190.0060.03612.68
5.3.180.0080.03412.67
5.3.170.0050.04312.66
5.3.160.0110.04612.67
5.3.150.0060.03912.67
5.3.140.0100.04812.66
5.3.130.0050.03912.65
5.3.120.0040.03912.66
5.3.110.0070.04712.65
5.3.100.0060.03712.12
5.3.90.0060.03712.09
5.3.80.0080.03612.07
5.3.70.0050.03712.07
5.3.60.0060.03512.07
5.3.50.0090.03412.00
5.3.40.0060.03612.00
5.3.30.0050.03711.94
5.3.20.0070.03411.72
5.3.10.0060.03411.69
5.3.00.0070.03611.67
5.2.170.0030.0329.18
5.2.160.0050.0299.18
5.2.150.0050.0339.18
5.2.140.0050.0339.17
5.2.130.0020.0329.13
5.2.120.0040.0309.13
5.2.110.0060.0289.14
5.2.100.0070.0269.14
5.2.90.0080.0269.14
5.2.80.0030.0319.13
5.2.70.0030.0319.13
5.2.60.0030.0329.09
5.2.50.0040.0319.05
5.2.40.0050.0309.03
5.2.30.0040.0309.01
5.2.20.0040.0299.00
5.2.10.0040.0288.92
5.2.00.0090.0428.78
5.1.60.0050.0238.06
5.1.50.0040.0278.05
5.1.40.0090.0318.04
5.1.30.0040.0278.39
5.1.20.0050.0358.41
5.1.10.0040.0258.13
5.1.00.0020.0288.14
5.0.50.0040.0226.62
5.0.40.0020.0226.48
5.0.30.0050.0306.29
5.0.20.0020.0206.26
5.0.10.0040.0196.23
5.0.00.0040.0316.23
4.4.90.0040.0144.78
4.4.80.0040.0144.76
4.4.70.0020.0164.75
4.4.60.0010.0174.75
4.4.50.0020.0164.77
4.4.40.0020.0254.71
4.4.30.0040.0144.76
4.4.20.0020.0164.84
4.4.10.0000.0184.85
4.4.00.0020.0254.76
4.3.110.0030.0154.67
4.3.100.0010.0164.67
4.3.90.0010.0164.63
4.3.80.0030.0244.58
4.3.70.0020.0154.63
4.3.60.0040.0124.63
4.3.50.0040.0134.63
4.3.40.0020.0244.54
4.3.30.0010.0163.28
4.3.20.0030.0153.26
4.3.10.0020.0153.22
4.3.00.0130.0277.06

preferences:
49.32 ms | 401 KiB | 5 Q