3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 1, 'b' => array('c' => 3, 'd' => 4)); $b = array('a' => 3, 'b' => array('d' => 5, 'e' => 6)); print_r(array_merge_recursive($a, $b));

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)
8.3.40.0040.01118.71
8.3.30.0100.00318.97
8.3.20.0030.00620.18
8.3.10.0080.00020.44
8.3.00.0040.00419.44
8.2.170.0110.00422.96
8.2.160.0040.01420.52
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0000.00822.11
8.2.110.0060.00322.27
8.2.100.0070.00320.44
8.2.90.0030.00619.05
8.2.80.0040.00417.97
8.2.70.0030.00517.25
8.2.60.0000.00817.91
8.2.50.0050.00318.07
8.2.40.0000.00718.07
8.2.30.0000.00719.11
8.2.20.0040.00417.59
8.2.10.0000.00918.01
8.2.00.0040.00417.48
8.1.270.0040.00423.89
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0060.00322.09
8.1.230.0090.00319.23
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0060.00317.23
8.1.190.0080.00017.13
8.1.180.0080.00018.10
8.1.170.0080.00018.56
8.1.160.0040.00421.86
8.1.150.0000.00718.69
8.1.140.0030.00517.41
8.1.130.0030.00317.78
8.1.120.0080.00017.29
8.1.110.0050.00317.42
8.1.100.0000.00717.35
8.1.90.0070.00017.34
8.1.80.0080.00017.45
8.1.70.0000.00717.38
8.1.60.0070.00017.56
8.1.50.0030.00717.46
8.1.40.0000.00817.39
8.1.30.0080.00017.52
8.1.20.0000.00817.47
8.1.10.0000.00717.52
8.1.00.0000.00717.38
8.0.300.0000.00918.77
8.0.290.0040.00416.63
8.0.280.0000.00818.36
8.0.270.0030.00317.23
8.0.260.0000.00717.18
8.0.250.0000.00716.85
8.0.240.0060.00016.91
8.0.230.0000.00716.88
8.0.220.0000.00716.70
8.0.210.0000.00816.69
8.0.200.0070.00016.81
8.0.190.0040.00416.91
8.0.180.0000.00816.84
8.0.170.0080.00016.86
8.0.160.0020.00516.74
8.0.150.0030.00316.76
8.0.140.0040.00416.68
8.0.130.0030.00313.24
8.0.120.0030.00516.83
8.0.110.0000.00716.79
8.0.100.0040.00416.80
8.0.90.0000.00816.93
8.0.80.0080.00716.82
8.0.70.0000.00816.68
8.0.60.0000.00716.77
8.0.50.0070.00016.80
8.0.30.0100.01217.08
8.0.20.0100.01317.40
8.0.10.0000.00716.80
8.0.00.0050.01216.51
7.4.330.0000.00515.00
7.4.320.0000.00716.52
7.4.300.0030.00316.53
7.4.290.0030.00316.36
7.4.280.0040.00416.52
7.4.270.0030.00316.44
7.4.260.0030.00316.43
7.4.250.0000.00816.35
7.4.240.0060.00216.42
7.4.230.0040.00416.43
7.4.220.0150.00616.43
7.4.210.0080.00516.55
7.4.200.0040.00416.63
7.4.160.0200.00316.16
7.4.150.0120.00617.40
7.4.140.0060.01117.86
7.4.130.0110.00516.40
7.4.120.0120.00816.30
7.4.110.0080.00816.43
7.4.100.0150.00316.29
7.4.90.0070.01016.37
7.4.80.0070.01016.39
7.4.70.0110.01416.49
7.4.60.0030.01216.43
7.4.50.0000.00516.53
7.4.40.0130.00316.09
7.4.30.0120.00316.20
7.4.00.0040.01115.03
7.3.330.0000.00513.00
7.3.320.0030.00313.04
7.3.310.0070.00016.22
7.3.300.0030.00316.13
7.3.290.0000.01316.13
7.3.280.0060.01016.16
7.3.270.0120.00917.40
7.3.260.0030.01316.29
7.3.250.0130.00816.39
7.3.240.0120.00416.56
7.3.230.0110.00616.39
7.3.210.0110.00516.44
7.3.200.0110.01419.39
7.3.190.0100.00716.15
7.3.180.0090.01316.14
7.3.170.0060.01416.27
7.3.160.0060.00916.14
7.3.10.0060.01216.52
7.3.00.0100.01016.36
7.2.330.0090.00916.56
7.2.320.0130.01016.41
7.2.310.0100.00716.52
7.2.300.0030.01416.29
7.2.290.0000.02216.57
7.2.130.0040.01116.75
7.2.120.0080.00616.70
7.2.110.0100.00716.69
7.2.100.0070.00416.85
7.2.90.0030.01016.84
7.2.80.0030.01216.74
7.2.70.0030.00716.76
7.2.60.0100.00416.91
7.2.50.0100.00616.88
7.2.40.0070.00316.79
7.2.30.0080.00416.84
7.2.20.0170.00016.83
7.2.10.0090.00316.59
7.2.00.0110.00518.00
7.1.250.0070.00715.73
7.1.100.0000.00817.97
7.1.70.0030.00316.85
7.1.60.0170.00719.32
7.1.50.0280.01034.72
7.1.00.0000.07722.28
7.0.200.0070.01116.34
7.0.140.0000.07721.99
7.0.60.0030.08719.87
7.0.50.0100.08017.72
7.0.40.0170.08720.15
7.0.30.0630.06020.08
7.0.20.0300.09020.23
7.0.10.0000.04720.05
7.0.00.0100.08020.25
5.6.280.0030.07321.02
5.6.210.0100.08320.47
5.6.200.0130.07718.15
5.6.190.0100.06720.67
5.6.180.0570.06020.50
5.6.170.0570.06720.55
5.6.160.0030.04020.56
5.6.150.0130.05018.24
5.6.140.0000.05018.24
5.6.130.0030.09018.18
5.6.120.0170.07321.09
5.6.110.0130.07320.98
5.6.100.0070.08321.13
5.6.90.0070.08320.96
5.6.80.0130.07720.39
5.5.350.0100.08720.52
5.5.340.0030.04718.08
5.5.330.0070.08020.37
5.5.320.0530.06020.36
5.5.310.0470.06320.41
5.5.300.0070.07318.04
5.5.290.0070.07718.05
5.5.280.0100.08320.97
5.5.270.0100.08020.78
5.5.260.0130.08320.86
5.5.250.0070.03720.71
5.5.240.0200.07020.11
5.4.450.0230.06019.56
5.4.440.0970.06319.31
5.4.430.1130.05719.57
5.4.420.1000.05319.57
5.4.410.0800.05319.34
5.4.400.1230.06019.06
5.4.390.0630.06019.30
5.4.380.0230.06018.68
5.4.370.0400.05018.59
5.4.360.0330.05018.75
5.4.350.0500.04718.78
5.4.340.0230.06018.80
5.4.320.0050.03912.48
5.4.310.0080.03612.48
5.4.300.0090.04012.48
5.4.290.0070.03912.48
5.4.280.0070.03512.38
5.4.270.0070.03612.38
5.4.260.0090.03512.38
5.4.250.0110.03712.38
5.4.240.0050.03812.38
5.4.230.0060.03812.37
5.4.220.0100.03712.37
5.4.210.0120.03212.37
5.4.200.0050.03912.37
5.4.190.0100.04012.36
5.4.180.0070.04512.36
5.4.170.0060.03512.38
5.4.160.0070.03512.37
5.4.150.0070.03512.37
5.4.140.0050.03912.05
5.4.130.0070.03512.04
5.4.120.0090.03312.00
5.4.110.0050.04312.00
5.4.100.0030.03912.00
5.4.90.0090.03612.00
5.4.80.0050.03811.99
5.4.70.0060.03511.99
5.4.60.0060.03411.99
5.4.50.0080.03411.99
5.4.40.0080.03311.98
5.4.30.0060.04211.98
5.4.20.0040.03811.98
5.4.10.0050.03511.98
5.4.00.0050.03611.47
5.3.290.0120.04112.80
5.3.280.0080.04312.71
5.3.270.0070.04412.73
5.3.260.0050.04012.71
5.3.250.0100.03312.72
5.3.240.0100.03412.71
5.3.230.0080.03912.71
5.3.220.0090.03512.68
5.3.210.0050.03912.68
5.3.200.0070.04012.68
5.3.190.0060.04312.68
5.3.180.0070.04112.67
5.3.170.0090.03512.66
5.3.160.0070.03712.67
5.3.150.0060.04012.67
5.3.140.0080.03612.66
5.3.130.0070.03712.65
5.3.120.0050.04112.66
5.3.110.0060.03812.66
5.3.100.0040.03912.12
5.3.90.0080.04012.09
5.3.80.0050.04312.08
5.3.70.0100.03412.08
5.3.60.0060.03812.07
5.3.50.0040.03812.01
5.3.40.0060.03612.01
5.3.30.0060.03511.97
5.3.20.0070.03411.75
5.3.10.0050.03511.72
5.3.00.0070.03511.71
5.2.170.0070.0289.21
5.2.160.0060.0339.21
5.2.150.0070.0279.21
5.2.140.0060.0379.20
5.2.130.0060.0279.16
5.2.120.0020.0319.16
5.2.110.0060.0289.17
5.2.100.0040.0299.17
5.2.90.0070.0269.17
5.2.80.0030.0319.16
5.2.70.0050.0339.16
5.2.60.0060.0289.11
5.2.50.0040.0309.08
5.2.40.0060.0279.06
5.2.30.0090.0329.04
5.2.20.0060.0289.02
5.2.10.0050.0278.94
5.2.00.0050.0298.79
5.1.60.0050.0238.07
5.1.50.0080.0218.07
5.1.40.0050.0268.06
5.1.30.0060.0248.41
5.1.20.0100.0268.43
5.1.10.0010.0298.15
5.1.00.0070.0228.15
5.0.50.0030.0216.63
5.0.40.0080.0206.50
5.0.30.0040.0356.30
5.0.20.0030.0196.27
5.0.10.0050.0216.25
5.0.00.0040.0366.25
4.4.90.0040.0144.78
4.4.80.0050.0184.75
4.4.70.0030.0164.76
4.4.60.0040.0184.76
4.4.50.0040.0184.77
4.4.40.0040.0264.70
4.4.30.0030.0154.76
4.4.20.0040.0144.84
4.4.10.0040.0144.85
4.4.00.0040.0234.76
4.3.110.0060.0194.67
4.3.100.0060.0154.66
4.3.90.0040.0164.63
4.3.80.0050.0254.59
4.3.70.0040.0174.63
4.3.60.0030.0184.63
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0020.0163.29
4.3.20.0040.0183.27
4.3.10.0000.0173.23
4.3.00.0000.0236.80

preferences:
35.88 ms | 400 KiB | 5 Q