3v4l.org

run code in 300+ PHP versions simultaneously
<?php $first = [ 'abc' => [] ]; $alias = '30000'; var_dump(array_merge($first, ['30000' => []]));

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)
8.3.60.0060.01516.63
8.3.50.0120.00521.94
8.3.40.0090.00618.71
8.3.30.0000.01418.82
8.3.20.0040.00420.13
8.3.10.0000.00721.79
8.3.00.0080.00019.00
8.2.180.0150.00618.39
8.2.170.0170.00322.96
8.2.160.0100.00320.28
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0080.00019.65
8.2.110.0030.00620.89
8.2.100.0030.00917.84
8.2.90.0060.00319.17
8.2.80.0030.00517.97
8.2.70.0040.00417.36
8.2.60.0000.00817.80
8.2.50.0050.00318.10
8.2.40.0040.00419.50
8.2.30.0080.00018.05
8.2.20.0080.00017.59
8.2.10.0000.00718.03
8.2.00.0000.00717.53
8.1.280.0210.00025.92
8.1.270.0030.00518.75
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00723.91
8.1.230.0070.00717.83
8.1.220.0050.00317.74
8.1.210.0060.00318.77
8.1.200.0040.00417.23
8.1.190.0080.00017.23
8.1.180.0040.00418.10
8.1.170.0080.00020.28
8.1.160.0000.00721.99
8.1.150.0040.00418.86
8.1.140.0040.00417.36
8.1.130.0030.00317.72
8.1.120.0040.00417.43
8.1.110.0030.00517.29
8.1.100.0030.00317.36
8.1.90.0000.00717.38
8.1.80.0050.00217.34
8.1.70.0030.00517.29
8.1.60.0040.00417.40
8.1.50.0050.00317.48
8.1.40.0000.00717.49
8.1.30.0040.00417.53
8.1.20.0040.00417.50
8.1.10.0040.00417.31
8.1.00.0030.00517.38
8.0.300.0000.00718.77
8.0.290.0070.00016.63
8.0.280.0080.00018.36
8.0.270.0030.00317.18
8.0.260.0030.00317.11
8.0.250.0030.00316.94
8.0.240.0000.00616.93
8.0.230.0030.00316.86
8.0.220.0030.00316.79
8.0.210.0000.00816.84
8.0.200.0030.00316.95
8.0.190.0040.00416.80
8.0.180.0050.00316.84
8.0.170.0070.00016.77
8.0.160.0030.00316.84
8.0.150.0070.00016.76
8.0.140.0040.00416.69
8.0.130.0030.00313.29
8.0.120.0040.00416.74
8.0.110.0030.00316.78
8.0.100.0050.00216.76
8.0.90.0050.00216.68
8.0.80.0080.00816.77
8.0.70.0040.00416.79
8.0.60.0080.00016.78
8.0.50.0080.00016.70
8.0.30.0150.00516.99
8.0.20.0070.01217.40
8.0.10.0000.00716.79
8.0.00.0130.00716.83
7.4.330.0020.00215.07
7.4.320.0000.00616.52
7.4.300.0090.00016.57
7.4.290.0050.00216.42
7.4.280.0090.00016.43
7.4.270.0000.00716.43
7.4.260.0050.00216.41
7.4.250.0000.00816.31
7.4.240.0020.00516.43
7.4.230.0050.00216.46
7.4.220.0090.00916.48
7.4.210.0090.00616.48
7.4.200.0070.00016.28
7.4.160.0070.01016.36
7.4.150.0180.00017.40
7.4.140.0100.01017.86
7.4.130.0090.00916.50
7.4.120.0080.00816.54
7.4.110.0160.00316.36
7.4.100.0100.01016.37
7.4.90.0120.00616.59
7.4.80.0110.00719.39
7.4.70.0060.00916.48
7.4.60.0120.00816.11
7.4.50.0030.00616.33
7.4.40.0070.01016.39
7.4.30.0040.01816.36
7.4.00.0130.00314.97
7.3.330.0040.00412.97
7.3.320.0080.00413.05
7.3.310.0070.00015.95
7.3.300.0060.00016.16
7.3.290.0030.00316.02
7.3.280.0070.00916.17
7.3.270.0120.01317.40
7.3.260.0130.00316.28
7.3.250.0080.00916.12
7.3.240.0110.00516.14
7.3.230.0090.01216.39
7.3.210.0090.00916.38
7.3.200.0100.00619.39
7.3.190.0080.00816.23
7.3.180.0170.00316.16
7.3.170.0100.01016.27
7.3.160.0100.01016.16
7.2.330.0030.01616.46
7.2.320.0150.00916.50
7.2.310.0110.01116.29
7.2.300.0060.01516.37
7.2.290.0120.00616.33
7.2.60.0060.01016.58
7.2.00.0060.00919.20
7.1.200.0100.00315.34
7.1.100.0090.00318.24
7.1.70.0060.00316.80
7.1.60.0100.01319.46
7.1.50.0000.01616.58
7.1.00.0030.07322.43
7.0.200.0000.00916.71
7.0.140.0000.06321.99
7.0.70.4170.03319.91
7.0.60.0070.07719.91
7.0.50.0030.05717.77
7.0.40.0100.06720.04
7.0.30.0200.07020.33
7.0.20.0400.06020.18
7.0.10.0400.07320.44
7.0.00.0030.04320.09
5.6.280.0100.06021.09
5.6.210.0130.07720.71
5.6.200.0030.06018.10
5.6.190.0100.07320.34
5.6.180.0170.04020.37
5.6.170.0330.07720.51
5.6.160.0130.07720.52
5.6.150.0100.08318.04
5.6.140.0000.04318.18
5.6.130.0000.06718.22
5.6.120.0100.08020.97
5.6.110.0070.06321.02
5.6.100.0070.04021.13
5.6.90.0270.06320.96
5.6.80.0030.07020.48
5.6.70.0270.07320.38
5.5.350.0000.04320.32
5.5.340.0070.06717.91
5.5.330.0030.04320.38
5.5.320.0030.07320.38
5.5.310.0270.07720.32
5.5.300.0100.08317.98
5.5.290.0070.08717.87
5.5.280.0070.05020.88
5.5.270.0070.06020.75
5.5.260.0070.07320.71
5.5.250.0030.07720.55
5.5.240.0130.07720.25
5.4.450.0700.06019.54
5.4.440.0730.04719.32
5.4.430.0130.05019.52
5.4.420.0200.05319.60
5.4.410.0530.06319.28
5.4.400.0230.04318.77
5.4.390.0100.05718.53
5.4.380.0000.07018.78
5.4.370.0170.05318.59
5.4.360.0170.05018.72
5.4.350.0100.05718.55
5.4.340.0170.05018.51
5.4.320.0230.04718.55
5.4.310.0170.05318.69
5.4.300.0130.05318.77
5.4.290.0130.05318.65
5.4.280.0100.05718.73
5.4.270.0130.05318.73
5.4.260.0270.05718.71
5.4.250.0070.06318.45
5.4.240.0130.05718.58
5.4.230.0130.05318.53
5.4.220.0070.06018.48
5.4.210.0200.04718.63
5.4.200.0270.05716.69
5.4.190.0270.06018.48
5.4.180.0230.06318.66
5.4.170.0100.06018.70
5.4.160.0170.05018.70
5.4.150.0100.05718.50
5.4.140.0130.05016.17
5.4.130.0130.05016.20
5.4.120.0130.05016.25
5.4.110.0070.06016.21
5.4.100.0100.07316.16
5.4.90.0200.06316.18
5.4.80.0200.06016.20
5.4.70.0270.05716.29
5.4.60.0070.06316.13
5.4.50.0130.05016.19
5.4.40.0130.05316.02
5.4.30.0230.04316.09
5.4.20.0130.05015.97
5.4.10.0170.04716.11
5.4.00.0170.04315.80
5.3.290.0100.05714.70
5.3.280.0270.04314.49
5.3.270.0130.05314.66
5.3.260.0100.07014.70
5.3.250.0170.05314.52
5.3.240.0130.05314.68
5.3.230.0100.05714.58
5.3.220.0130.05314.50
5.3.210.0270.05314.50
5.3.200.0100.05714.61
5.3.190.0200.05014.64
5.3.180.0170.06314.66
5.3.170.0100.06714.53
5.3.160.0130.05014.48
5.3.150.0030.06014.63
5.3.140.0300.04314.61
5.3.130.0230.04714.61
5.3.120.0100.06014.53
5.3.110.0070.06714.51
5.3.100.0130.06013.99
5.3.90.0130.05014.03
5.3.80.0170.05013.96
5.3.70.0170.04713.95
5.3.60.0200.04713.95
5.3.50.0130.05713.85
5.3.40.0170.06313.88
5.3.30.0170.05313.90
5.3.20.0170.04313.65
5.3.10.0200.04013.55
5.3.00.0130.05013.61
5.2.170.0000.05311.09
5.2.160.0030.04711.09
5.2.150.0100.04711.29
5.2.140.0070.04711.14
5.2.130.0100.04311.07
5.2.120.0070.04311.04
5.2.110.0230.04011.14
5.2.100.0170.03011.06
5.2.90.0070.04311.13
5.2.80.0130.04311.03
5.2.70.0100.04311.14
5.2.60.0170.03311.18
5.2.50.0130.03710.97
5.2.40.0070.04011.03
5.2.30.0100.04010.90
5.2.20.0130.03310.87
5.2.10.0130.03310.88
5.2.00.0070.05310.83
5.1.60.0100.03010.05
5.1.50.0100.0479.97
5.1.40.0100.04710.07
5.1.30.0030.05010.43
5.1.20.0070.04010.50
5.1.10.0130.03310.09
5.1.00.0100.04010.16
5.0.50.0070.0308.64
5.0.40.0030.0308.50
5.0.30.0000.0538.22
5.0.20.0170.0178.21
5.0.10.0070.0278.25
5.0.00.0070.0438.36
4.4.90.0030.0235.89
4.4.80.0070.0335.81
4.4.70.0070.0305.89
4.4.60.0100.0305.91
4.4.50.0000.0375.88
4.4.40.0070.0475.89
4.4.30.0070.0305.86
4.4.20.0030.0235.94
4.4.10.0000.0275.92
4.4.00.0000.0405.90
4.3.110.0030.0235.80
4.3.100.0000.0275.80
4.3.90.0000.0275.79
4.3.80.0030.0335.89
4.3.70.0070.0235.86
4.3.60.0130.0175.86
4.3.50.0000.0305.86
4.3.40.0070.0375.77
4.3.30.0070.0204.59
4.3.20.0030.0234.54
4.3.10.0030.0204.61
4.3.00.0070.0276.95

preferences:
61.42 ms | 401 KiB | 5 Q