3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1, 2, 3]; $b = null; var_dump(array_merge($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)
8.5.20.0110.00619.55
8.5.10.0100.00819.64
8.5.00.0130.00919.85
8.4.170.0100.01219.75
8.4.160.0110.01023.93
8.4.150.0080.00416.94
8.4.140.0110.01217.66
8.4.130.0100.01117.85
8.4.120.0120.00820.41
8.4.110.0090.00920.77
8.4.100.0110.00817.83
8.4.90.0120.01017.83
8.4.80.0080.01117.81
8.4.70.0110.00417.93
8.4.60.0120.01017.93
8.4.50.0070.01318.59
8.4.40.0160.00320.19
8.4.30.0160.00320.14
8.4.20.0060.00319.89
8.4.10.0100.01019.41
8.3.300.0070.01520.37
8.3.290.0130.00718.41
8.3.280.0050.00616.22
8.3.270.0140.00616.81
8.3.260.0040.00516.92
8.3.250.0120.00718.62
8.3.240.0120.00816.56
8.3.230.0080.00916.50
8.3.220.0060.00718.77
8.3.210.0110.00716.54
8.3.200.0060.01216.55
8.3.190.0110.00916.96
8.3.180.0040.00518.75
8.3.170.0090.00917.13
8.3.160.0110.00716.79
8.3.150.0040.00417.07
8.3.140.0120.00616.48
8.3.130.0080.00018.41
8.3.120.0060.00320.71
8.3.110.0040.00420.94
8.3.100.0090.00924.06
8.3.90.0100.00326.77
8.3.80.0060.00319.36
8.3.70.0150.00016.63
8.3.60.0160.00318.30
8.3.50.0100.00423.53
8.3.40.0070.00718.75
8.3.30.0090.00618.59
8.3.20.0070.00020.77
8.3.10.0080.00020.10
8.3.00.0000.00722.39
8.2.300.0150.00518.37
8.2.290.0070.00120.36
8.2.280.0100.00717.07
8.2.270.0100.00716.71
8.2.260.0060.00319.03
8.2.250.0160.00016.75
8.2.240.0120.00317.14
8.2.230.0100.01022.58
8.2.220.0000.00937.54
8.2.210.0030.01026.77
8.2.200.0100.00018.88
8.2.190.0150.00016.58
8.2.180.0070.00718.46
8.2.170.0060.00922.96
8.2.160.0110.00422.02
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0070.00026.16
8.2.110.0090.00022.07
8.2.100.0090.00317.91
8.2.90.0040.00417.63
8.2.80.0000.00918.82
8.2.70.0040.00417.63
8.2.60.0030.00517.38
8.2.50.0000.00818.05
8.2.40.0000.00817.62
8.2.30.0040.00417.67
8.2.20.0040.00417.90
8.2.10.0040.00419.11
8.2.00.0000.00719.13
8.1.340.0080.01117.87
8.1.330.0090.01116.85
8.1.320.0100.01016.40
8.1.310.0110.00418.63
8.1.300.0030.00616.35
8.1.290.0030.00630.84
8.1.280.0070.01125.92
8.1.270.0070.00020.70
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0100.00020.57
8.1.230.0070.00418.95
8.1.220.0040.00417.79
8.1.210.0050.00318.77
8.1.200.0000.00817.48
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0060.00317.62
8.1.160.0000.00719.01
8.1.150.0080.00018.80
8.1.140.0030.00522.04
8.1.130.0000.00720.06
8.1.120.0070.00017.36
8.1.110.0100.00017.39
8.1.100.0060.00317.35
8.1.90.0030.00917.41
8.1.80.0040.00417.44
8.1.70.0000.00717.39
8.1.60.0040.00417.39
8.1.50.0040.00417.52
8.1.40.0040.00417.45
8.1.30.0000.00917.64
8.1.20.0030.00617.48
8.1.10.0070.00017.61
8.1.00.0000.00717.39
8.0.300.0000.00719.78
8.0.290.0000.00816.63
8.0.280.0030.00518.44
8.0.270.0000.00717.92
8.0.260.0000.00620.04
8.0.250.0040.00416.84
8.0.240.0020.00516.95
8.0.230.0070.00016.93
8.0.220.0030.00616.93
8.0.210.0000.00716.82
8.0.200.0040.00416.77
8.0.190.0030.00316.84
8.0.180.0030.00616.81
8.0.170.0040.00716.91
8.0.160.0000.00816.84
8.0.150.0070.00016.77
8.0.140.0040.00416.71
8.0.130.0000.00513.35
8.0.120.0030.00516.90
8.0.110.0000.00716.92
8.0.100.0070.00016.93
8.0.90.0060.00316.96
8.0.80.0110.00416.98
8.0.70.0030.00616.85
8.0.60.0000.00816.73
8.0.50.0030.00616.82
8.0.30.0070.01017.04
8.0.20.0100.01016.89
8.0.10.0000.00816.87
8.0.00.0100.00716.62
7.4.330.0020.00215.55
7.4.320.0030.00316.41
7.4.300.0000.00716.53
7.4.290.0000.00716.47
7.4.280.0000.00716.41
7.4.270.0030.00316.56
7.4.260.0050.00013.12
7.4.250.0040.00416.48
7.4.240.0040.00416.44
7.4.230.0030.00516.61
7.4.220.0030.00316.48
7.4.210.0120.00716.47
7.4.200.0040.00416.36
7.4.130.0040.01316.39
7.4.120.0180.00616.55
7.4.110.0100.00716.47
7.4.100.0160.00316.43
7.4.90.0000.01716.54
7.4.80.0060.01019.39
7.4.70.0110.00516.37
7.4.60.0000.01716.33
7.4.50.0030.01216.19
7.4.40.0150.00816.57
7.4.00.0010.01414.82
7.3.330.0040.00416.33
7.3.320.0060.00013.04
7.3.310.0070.00016.04
7.3.300.0000.00716.09
7.3.290.0030.01016.14
7.3.280.0070.00716.16
7.3.260.0060.01216.19
7.3.240.0070.01016.22
7.3.230.0060.01216.27
7.3.210.0100.00616.45
7.3.200.0070.01416.32
7.3.190.0060.01216.39
7.3.180.0030.01616.22
7.3.170.0130.00716.48
7.3.160.0100.00616.16
7.3.120.0100.00814.70
7.3.110.0110.00814.55
7.3.100.0200.00314.35
7.3.90.0160.00314.58
7.3.80.0280.00014.88
7.3.70.0160.00814.62
7.3.60.0130.00714.70
7.3.50.0050.01914.57
7.3.40.0150.00814.66
7.3.30.0130.00714.61
7.3.20.0160.00614.36
7.3.10.0110.01714.33
7.3.00.0170.01014.70
7.2.330.0060.01216.48
7.2.320.0070.01416.43
7.2.310.0030.01316.45
7.2.300.0130.01016.24
7.2.290.0150.00416.28
7.2.250.0100.01014.44
7.2.240.0080.01514.60
7.2.230.0130.01314.45
7.2.220.0170.00614.60
7.2.210.0070.01714.41
7.2.200.0170.00714.77
7.2.190.0080.01414.65
7.2.180.0240.00014.77
7.2.170.0240.00314.61
7.1.330.0100.01013.73
7.1.320.0140.00513.80
7.1.310.0110.00613.77
7.1.300.0090.01213.81
7.1.290.0240.00413.80
7.1.280.0140.00913.73
7.1.270.0190.00313.95
7.1.260.0100.01113.84

preferences:
37.54 ms | 403 KiB | 5 Q