3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 1, 'ab' => 2, 'na' => null, 'nb' => 3); $b = array('b' => 10, 'ab' => 20, 'na' => 30, 'nb' => null); var_dump(array_merge($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)
8.3.60.0140.00418.55
8.3.50.0110.00822.05
8.3.40.0170.00318.72
8.3.30.0140.00018.89
8.3.20.0000.00720.09
8.3.10.0040.00421.65
8.3.00.0000.00719.09
8.2.180.0090.00918.13
8.2.170.0120.00622.96
8.2.160.0070.00722.02
8.2.150.0100.00024.18
8.2.140.0090.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00319.54
8.2.110.0000.00822.29
8.2.100.0090.00619.15
8.2.90.0000.00819.13
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0030.00518.07
8.2.40.0000.00818.22
8.2.30.0040.00417.86
8.2.20.0000.00717.68
8.2.10.0040.00418.07
8.2.00.0050.00317.72
8.1.280.0170.00325.92
8.1.270.0040.00418.74
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0030.00623.95
8.1.230.0030.00718.97
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0000.00917.23
8.1.190.0040.00417.10
8.1.180.0000.00818.10
8.1.170.0050.00218.59
8.1.160.0050.00221.93
8.1.150.0070.00018.82
8.1.140.0080.00019.16
8.1.130.0030.00317.81
8.1.120.0070.00017.36
8.1.110.0000.00817.38
8.1.100.0000.00717.38
8.1.90.0020.00517.27
8.1.80.0000.00817.41
8.1.70.0040.00417.31
8.1.60.0030.00617.41
8.1.50.0080.00017.43
8.1.40.0040.00417.43
8.1.30.0080.00017.56
8.1.20.0060.00317.39
8.1.10.0050.00317.40
8.1.00.0070.00017.36
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0050.00218.35
8.0.270.0000.00717.31
8.0.260.0030.00317.10
8.0.250.0060.00016.89
8.0.240.0070.00016.79
8.0.230.0020.00516.88
8.0.220.0000.00716.82
8.0.210.0000.00716.82
8.0.200.0030.00516.77
8.0.190.0040.00416.86
8.0.180.0070.00016.77
8.0.170.0070.00016.85
8.0.160.0080.00016.80
8.0.150.0050.00316.69
8.0.140.0070.00016.74
8.0.130.0000.00513.27
8.0.120.0000.00816.82
8.0.110.0050.00316.67
8.0.100.0000.00716.61
8.0.90.0000.00716.81
8.0.80.0100.00616.70
8.0.70.0000.00716.82
8.0.60.0050.00216.64
8.0.50.0070.00016.61
8.0.30.0120.01116.81
8.0.20.0100.01317.40
8.0.10.0070.00016.96
8.0.00.0060.01116.71
7.4.330.0030.00315.03
7.4.320.0000.00616.33
7.4.300.0000.00816.42
7.4.290.0070.00016.53
7.4.280.0070.00316.40
7.4.270.0070.00016.52
7.4.260.0060.00016.50
7.4.250.0000.00716.42
7.4.240.0030.00416.49
7.4.230.0070.00016.63
7.4.220.0260.01216.58
7.4.210.0000.01916.41
7.4.200.0040.00316.62
7.4.160.0140.01116.47
7.4.150.0130.00617.40
7.4.140.0060.01117.86
7.4.130.0070.00916.35
7.4.120.0130.00816.33
7.4.110.0170.01016.30
7.4.100.0080.00816.38
7.4.90.0150.00316.54
7.4.80.0110.01119.39
7.4.70.0070.01216.45
7.4.60.0040.01416.45
7.4.50.0030.00316.07
7.4.40.0150.00616.21
7.4.30.0100.00716.45
7.4.00.0060.00914.81
7.3.330.0050.00012.92
7.3.320.0060.00012.87
7.3.310.0070.00016.13
7.3.300.0000.00616.08
7.3.290.0050.01016.13
7.3.280.0080.00916.13
7.3.270.0100.01117.40
7.3.260.0030.01416.42
7.3.250.0120.00416.29
7.3.240.0080.00816.20
7.3.230.0060.01616.39
7.3.210.0100.00716.09
7.3.200.0120.00419.39
7.3.190.0000.01516.35
7.3.180.0180.00316.31
7.3.170.0120.00616.27
7.3.160.0110.00916.18
7.2.330.0040.01316.25
7.2.320.0070.01016.52
7.2.310.0100.00716.26
7.2.300.0110.01116.59
7.2.290.0060.01416.29
7.2.00.0030.01219.05
7.1.100.0100.00318.13
7.1.70.0000.00816.96
7.1.60.0090.01619.46
7.1.50.0100.01016.89
7.1.00.0100.07022.45
7.0.200.0000.00716.66
7.0.140.0000.06322.00
7.0.60.0070.07019.80
7.0.50.0100.05317.82
7.0.40.0100.07720.40
7.0.30.0600.06320.10
7.0.20.0170.04720.11
7.0.10.0070.08720.21
7.0.00.0100.05020.00
5.6.280.0000.07720.91
5.6.210.0030.06020.70
5.6.200.0200.07018.17
5.6.190.0000.09320.61
5.6.180.3000.04020.43
5.6.170.0230.04020.50
5.6.160.0030.04720.38
5.6.150.0030.06018.18
5.6.140.0000.08718.13
5.6.130.0070.08318.18
5.6.120.0200.07721.12
5.6.110.0070.07321.00
5.6.100.0070.07721.13
5.6.90.0100.08020.96
5.6.80.0100.08020.40
5.6.70.1700.07320.37
5.5.350.0100.08320.36
5.5.340.0070.06318.00
5.5.330.0070.03720.21
5.5.320.3130.03320.27
5.5.310.0170.04720.27
5.5.300.0070.06717.92
5.5.290.0030.05017.91
5.5.280.0070.08020.87
5.5.270.0030.09020.89
5.5.260.0000.09020.64
5.5.250.0070.04020.77
5.5.240.0230.07020.14
5.4.450.0270.05719.41
5.4.440.0500.06319.34
5.4.430.0070.06019.68
5.4.420.0100.05719.29
5.4.410.0200.06319.19
5.4.400.0000.06318.85
5.4.390.0170.05018.65
5.4.380.0130.06018.72
5.4.370.0100.05718.77
5.4.360.0130.05718.55
5.4.350.0170.05318.65
5.4.340.0270.04718.80
5.4.320.0170.05318.48
5.4.310.0100.06318.63
5.4.300.0130.05718.71
5.4.290.0200.05018.73
5.4.280.0230.05018.57
5.4.270.0200.05018.58
5.4.260.0130.05718.58
5.4.250.0300.05018.71
5.4.240.0170.05318.64
5.4.230.0300.03718.64
5.4.220.0300.04018.48
5.4.210.0170.05318.62
5.4.200.0230.04316.65
5.4.190.0170.05018.63
5.4.180.0200.05318.70
5.4.170.0230.05318.51
5.4.160.0330.03718.62
5.4.150.0170.05718.41
5.4.140.0300.04016.14
5.4.130.0270.06316.30
5.4.120.0170.05316.21
5.4.110.0130.05716.28
5.4.100.0300.05316.25
5.4.90.0130.05316.35
5.4.80.0100.05716.13
5.4.70.0330.05716.05
5.4.60.0130.05316.08
5.4.50.0200.04716.32
5.4.40.0300.04016.23
5.4.30.0130.05316.26
5.4.20.0130.05716.21
5.4.10.0100.05716.27
5.4.00.0130.05015.62
5.3.290.0270.04314.59
5.3.280.0070.06014.68
5.3.270.0130.06014.60
5.3.260.0070.06014.61
5.3.250.0270.04014.50
5.3.240.0170.05014.65
5.3.230.0070.06014.59
5.3.220.0330.04014.55
5.3.210.0200.05014.57
5.3.200.0170.04714.59
5.3.190.0270.04314.51
5.3.180.0230.05314.47
5.3.170.0170.05014.52
5.3.160.0130.05314.61
5.3.150.0130.05314.59
5.3.140.0130.06714.58
5.3.130.0200.05714.54
5.3.120.0100.06314.54
5.3.110.0400.03314.64
5.3.100.0130.06314.11
5.3.90.0070.05713.91
5.3.80.0130.05014.02
5.3.70.0170.05313.96
5.3.60.0130.05313.99
5.3.50.0170.05014.04
5.3.40.0070.06013.87
5.3.30.0200.06313.85
5.3.20.0130.05313.67
5.3.10.0130.06313.65
5.3.00.0130.05313.57
5.2.170.0100.04711.15
5.2.160.0200.04011.09
5.2.150.0170.03711.10
5.2.140.0070.04711.07
5.2.130.0130.04011.09
5.2.120.0000.05011.25
5.2.110.0130.04011.06
5.2.100.0030.04711.16
5.2.90.0100.04311.14
5.2.80.0100.04311.13
5.2.70.0170.03711.09
5.2.60.0100.04310.96
5.2.50.0130.04011.07
5.2.40.0070.04311.04
5.2.30.0130.04710.95
5.2.20.0130.03710.96
5.2.10.0100.04010.97
5.2.00.0130.04010.69
5.1.60.0170.0279.96
5.1.50.0170.0439.98
5.1.40.0200.04010.02
5.1.30.0170.04310.45
5.1.20.0170.03710.40
5.1.10.0100.03710.13
5.1.00.0170.03010.12
5.0.50.0070.0308.66
5.0.40.0100.0238.50
5.0.30.0070.0438.24
5.0.20.0030.0308.32
5.0.10.0100.0278.18
5.0.00.0070.0438.18
4.4.90.0100.0177.33
4.4.80.0030.0237.33
4.4.70.0030.0237.33
4.4.60.0070.0207.33
4.4.50.0000.0277.33
4.4.40.0070.0337.33
4.4.30.0100.0177.33
4.4.20.0030.0277.33
4.4.10.0070.0207.33
4.4.00.0030.0377.33
4.3.110.0070.0207.33
4.3.100.0070.0207.33
4.3.90.0030.0237.33
4.3.80.0100.0307.33
4.3.70.0030.0237.33
4.3.60.0070.0237.33
4.3.50.0070.0207.33
4.3.40.0070.0407.33
4.3.30.0030.0237.33
4.3.20.0030.0237.33
4.3.10.0070.0207.33
4.3.00.0070.0239.02

preferences:
45.03 ms | 401 KiB | 5 Q