3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Mammal { function mate(Mammal $with) { $class = substr($this::class, -1) . substr($with::class, 1); eval("class $class extends Mammal {}"); return new $class; } } class Panda extends Mammal {} class Dolphin extens 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)
5.4.320.0040.04012.51
5.4.310.0050.04112.51
5.4.300.0070.03812.52
5.4.290.0050.04112.51
5.4.280.0080.03612.41
5.4.270.0060.03912.41
5.4.260.0070.05412.41
5.4.250.0090.03612.41
5.4.240.0060.03712.41
5.4.230.0100.04112.40
5.4.220.0070.04212.40
5.4.210.0090.03612.40
5.4.200.0100.05312.40
5.4.190.0070.04112.39
5.4.180.0150.04512.39
5.4.170.0080.03812.40
5.4.160.0050.03912.40
5.4.150.0070.04712.40
5.4.140.0050.04812.09
5.4.130.0070.03612.07
5.4.120.0110.03412.03
5.4.110.0080.04812.03
5.4.100.0180.06912.03
5.4.90.0090.05812.04
5.4.80.0110.06712.04
5.4.70.0070.06012.03
5.4.60.0120.05212.03
5.4.50.0100.05312.03
5.4.40.0100.05012.02
5.4.30.0100.03712.01
5.4.20.0080.05112.01
5.4.10.0110.04612.01
5.4.00.0090.04811.50
5.3.290.0100.06112.80
5.3.280.0100.04212.70
5.3.270.0110.05812.73
5.3.260.0130.05212.72
5.3.250.0160.05612.72
5.3.240.0060.04312.72
5.3.230.0100.04512.71
5.3.220.0070.04312.68
5.3.210.0080.05512.68
5.3.200.0140.04712.68
5.3.190.0150.04612.68
5.3.180.0120.05112.67
5.3.170.0090.05312.67
5.3.160.0130.04912.67
5.3.150.0130.04912.67
5.3.140.0110.05812.66
5.3.130.0190.06112.66
5.3.120.0110.05112.66
5.3.110.0230.05812.65
5.3.100.0140.04812.13
5.3.90.0110.04812.11
5.3.80.0080.05112.09
5.3.70.0090.04212.09
5.3.60.0070.05512.08
5.3.50.0180.04512.02
5.3.40.0120.04812.02
5.3.30.0140.05111.99
5.3.20.0130.05011.77
5.3.10.0090.04011.73
5.3.00.0090.04211.72
5.2.170.0080.0379.23
5.2.160.0070.0419.22
5.2.150.0090.0379.23
5.2.140.0130.0399.22
5.2.130.0060.0449.18
5.2.120.0090.0419.18
5.2.110.0090.0389.19
5.2.100.0150.0569.18
5.2.90.0140.0389.18
5.2.80.0110.0409.17
5.2.70.0170.0299.18
5.2.60.0120.0449.13
5.2.50.0110.0329.10
5.2.40.0070.0499.08
5.2.30.0100.0299.05
5.2.20.0090.0399.04
5.2.10.0080.0418.95
5.2.00.0100.0438.81
5.1.60.0050.0258.09
5.1.50.0040.0288.09
5.1.40.0030.0298.07
5.1.30.0090.0288.42
5.1.20.0040.0348.44
5.1.10.0030.0378.16
5.1.00.0040.0428.16
5.0.50.0070.0276.64
5.0.40.0040.0216.50
5.0.30.0050.0336.32
5.0.20.0060.0316.28
5.0.10.0090.0266.26
5.0.00.0070.0376.25
4.4.90.0060.0184.78
4.4.80.0040.0244.76
4.4.70.0060.0184.76
4.4.60.0070.0244.76
4.4.50.0050.0174.77
4.4.40.0070.0314.70
4.4.30.0030.0214.76
4.4.20.0050.0204.84
4.4.10.0020.0254.85
4.4.00.0030.0334.75
4.3.110.0030.0184.67
4.3.100.0050.0194.66
4.3.90.0040.0144.64
4.3.80.0020.0264.58
4.3.70.0020.0164.63
4.3.60.0040.0214.63
4.3.50.0020.0244.63
4.3.40.0030.0254.53
4.3.30.0020.0173.30
4.3.20.0020.0173.28
4.3.10.0010.0183.24
4.3.00.0070.01718.16

preferences:
146.97 ms | 1394 KiB | 7 Q