3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Mammal { function mate(Mammal $with) { $class = substr($this::class, 0, -1) . substr($with::class, 1); eval("class $class extends Mammal {}"); return new $class; } } class Panda extends Mammal {} class Dolphin extends Mammal {} $mingmong = new Panda; $charles = new Dolphin; $charlimong = $mingmong->mate($charles); var_dump($charlimong);

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)
8.3.60.0110.00416.75
8.3.50.0140.00719.94
8.3.40.0100.00718.67
8.3.30.0070.00719.12
8.3.20.0040.00420.17
8.3.10.0040.00420.50
8.3.00.0040.00419.38
8.2.180.0040.01116.38
8.2.170.0040.01122.96
8.2.160.0030.01320.22
8.2.150.0140.00324.18
8.2.140.0030.00524.66
8.2.130.0070.00026.16
8.2.120.0050.00220.63
8.2.110.0060.00322.30
8.2.100.0090.00018.94
8.1.280.0110.00725.92
8.1.270.0000.00823.83
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0000.01018.49
8.1.230.0030.00718.62
5.4.320.0070.03512.52
5.4.310.0030.04012.52
5.4.300.0060.03612.52
5.4.290.0060.03812.52
5.4.280.0070.03412.41
5.4.270.0060.03912.41
5.4.260.0040.04312.41
5.4.250.0020.04112.41
5.4.240.0070.03912.41
5.4.230.0110.04912.40
5.4.220.0050.05612.40
5.4.210.0090.05112.40
5.4.200.0100.04012.40
5.4.190.0070.04312.39
5.4.180.0040.05012.40
5.4.170.0070.03712.41
5.4.160.0050.03812.40
5.4.150.0080.03612.40
5.4.140.0070.03812.09
5.4.130.0060.03712.07
5.4.120.0090.03812.04
5.4.110.0060.04412.03
5.4.100.0080.03812.03
5.4.90.0120.04812.03
5.4.80.0080.04912.03
5.4.70.0060.03712.02
5.4.60.0080.05012.03
5.4.50.0060.04212.03
5.4.40.0050.04912.02
5.4.30.0080.04212.01
5.4.20.0090.04812.01
5.4.10.0090.04612.01
5.4.00.0040.04511.50
5.3.290.0070.04312.80
5.3.280.0060.04912.71
5.3.270.0080.04012.73
5.3.260.0060.04212.72
5.3.250.0060.03812.71
5.3.240.0080.04112.72
5.3.230.0070.03812.70
5.3.220.0060.03912.68
5.3.210.0100.03912.68
5.3.200.0110.03712.68
5.3.190.0050.04412.68
5.3.180.0090.03612.67
5.3.170.0060.03812.67
5.3.160.0090.03912.67
5.3.150.0070.05212.67
5.3.140.0070.03812.66
5.3.130.0070.03812.66
5.3.120.0060.04612.66
5.3.110.0090.04112.66
5.3.100.0100.03812.12
5.3.90.0080.03612.10
5.3.80.0100.03612.09
5.3.70.0140.05112.09
5.3.60.0080.05012.08
5.3.50.0100.04812.03
5.3.40.0120.04912.02
5.3.30.0100.03411.98
5.3.20.0080.03511.77
5.3.10.0070.03911.73
5.3.00.0040.03811.72
5.2.170.0040.0339.23
5.2.160.0030.0329.23
5.2.150.0080.0289.23
5.2.140.0060.0319.22
5.2.130.0080.0269.18
5.2.120.0080.0329.18
5.2.110.0090.0369.19
5.2.100.0060.0299.18
5.2.90.0060.0289.18
5.2.80.0060.0299.17
5.2.70.0060.0309.18
5.2.60.0050.0309.13
5.2.50.0060.0299.10
5.2.40.0040.0309.08
5.2.30.0100.0279.04
5.2.20.0080.0319.04
5.2.10.0100.0238.95
5.2.00.0040.0308.81
5.1.60.0040.0258.09
5.1.50.0040.0308.09
5.1.40.0020.0278.07
5.1.30.0060.0338.42
5.1.20.0010.0318.44
5.1.10.0060.0258.16
5.1.00.0030.0298.17
5.0.50.0060.0266.64
5.0.40.0050.0206.50
5.0.30.0040.0336.32
5.0.20.0070.0176.28
5.0.10.0030.0216.26
5.0.00.0040.0296.25
4.4.90.0000.0184.78
4.4.80.0000.0184.75
4.4.70.0040.0154.75
4.4.60.0040.0154.75
4.4.50.0040.0214.77
4.4.40.0010.0294.71
4.4.30.0030.0214.76
4.4.20.0000.0264.84
4.4.10.0050.0184.85
4.4.00.0040.0274.75
4.3.110.0030.0164.67
4.3.100.0050.0144.66
4.3.90.0040.0184.63
4.3.80.0030.0264.59
4.3.70.0040.0154.63
4.3.60.0040.0134.63
4.3.50.0030.0164.63
4.3.40.0040.0244.54
4.3.30.0040.0233.30
4.3.20.0020.0163.28
4.3.10.0030.0213.24
4.3.00.0000.02018.16

preferences:
34.84 ms | 400 KiB | 5 Q