3v4l.org

run code in 300+ PHP versions simultaneously
<?php function __autoload($class) { switch ($class) { case 'A': case 'B': class B extends C {}; break; case 'C': class C {}; class A extends B {}; break; } } echo (int) class_exists('A');

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)
8.3.40.0110.00418.81
8.3.30.0040.01118.41
8.3.20.0070.00020.11
8.3.10.0040.00421.82
8.3.00.0040.00423.66
8.2.170.0060.00922.96
8.2.160.0100.00320.52
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00019.83
8.2.120.0070.00026.35
8.2.110.0030.00621.09
8.2.100.0070.00417.68
8.2.90.0030.00519.09
8.2.80.0080.00017.97
8.2.70.0050.00517.49
8.2.60.0030.00617.91
8.2.50.0000.00718.07
8.2.40.0030.00622.20
8.2.30.0070.00019.22
8.2.20.0070.00017.56
8.2.10.0030.00518.00
8.2.00.0000.00717.88
8.1.270.0100.00323.91
8.1.260.0080.00028.09
8.1.250.0050.00328.09
8.1.240.0030.00622.14
8.1.230.0080.00319.02
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0040.00417.25
8.1.190.0040.00717.23
8.1.180.0040.00418.10
8.1.170.0000.00918.39
8.1.160.0050.00320.62
8.1.150.0050.00218.71
8.1.140.0030.00619.36
8.1.130.0030.00317.44
8.1.120.0040.00417.33
8.1.110.0040.00417.28
8.1.100.0000.00717.33
8.1.90.0040.00417.32
8.1.80.0040.00417.32
8.1.70.0000.00717.34
8.1.60.0030.00517.47
8.1.50.0070.00317.27
8.1.40.0040.00417.41
8.1.30.0040.00417.61
8.1.20.0040.00417.56
8.1.10.0050.00217.43
8.1.00.0050.00217.29
8.0.300.0040.00418.77
8.0.290.0040.00416.58
8.0.280.0070.00018.19
8.0.270.0000.00717.12
8.0.260.0030.00317.16
8.0.250.0070.00016.89
8.0.240.0000.00716.89
8.0.230.0030.00316.91
8.0.220.0030.00316.80
8.0.210.0030.00316.80
8.0.200.0040.00416.75
8.0.190.0040.00416.85
8.0.180.0040.00416.88
8.0.170.0000.00816.79
8.0.160.0070.00016.86
8.0.150.0000.00716.74
8.0.140.0000.00716.79
8.0.130.0000.00713.29
8.0.120.0000.00816.71
8.0.110.0040.00416.68
8.0.100.0040.00416.66
8.0.90.0050.00316.70
8.0.80.0040.01116.77
8.0.70.0040.00416.71
8.0.60.0000.00716.73
8.0.50.0060.00316.71
8.0.30.0050.01117.00
8.0.20.0090.01117.40
8.0.10.0070.00016.89
8.0.00.0150.00316.59
7.4.330.0020.00216.74
7.4.320.0030.00316.57
7.4.300.0030.00316.55
7.4.290.0030.00316.36
7.4.280.0000.00816.54
7.4.270.0040.00416.45
7.4.260.0080.00016.54
7.4.250.0060.00316.48
7.4.240.0030.00416.48
7.4.230.0070.00016.55
7.4.220.0120.00316.49
7.4.210.0110.00716.61
7.4.200.0030.00316.29
7.4.160.0060.01016.41
7.4.150.0140.00617.40
7.4.140.0130.00517.86
7.4.130.0100.01016.57
7.4.120.0140.00316.54
7.4.110.0090.00916.47
7.4.100.0060.01016.58
7.4.90.0090.00816.46
7.4.80.0150.00619.39
7.4.70.0060.01216.39
7.4.60.0120.00316.50
7.4.50.0060.00916.50
7.4.40.0090.01016.55
7.4.30.0060.01216.47
7.4.00.0090.00615.06
7.3.330.0030.00313.30
7.3.320.0000.00613.29
7.3.310.0040.00416.16
7.3.300.0030.00316.23
7.3.290.0110.00316.31
7.3.280.0120.00716.33
7.3.270.0090.00917.40
7.3.260.0120.00516.69
7.3.240.0090.00816.33
7.3.230.0130.00316.39
7.3.210.0170.00016.33
7.3.200.0060.00919.39
7.3.190.0060.01016.44
7.3.180.0090.00616.31
7.3.170.0150.00016.43
7.3.160.0100.01016.25
7.2.330.0100.00916.66
7.2.320.0080.01116.56
7.2.310.0120.01216.43
7.2.300.0100.01016.53
7.2.290.0130.00916.34
7.2.60.0060.01016.74
7.2.00.0060.00919.12
7.1.200.0090.00614.75
7.1.120.0080.00818.73
7.1.110.0070.00717.78
7.1.100.0030.01118.22
7.1.90.0060.00618.07
7.1.80.0030.01017.96
7.1.70.0070.00517.11
7.1.60.0200.00527.02
7.1.50.0120.01125.80
7.1.40.0200.00934.15
7.1.30.0170.01334.40
7.1.20.0170.01034.46
7.1.10.0070.00716.47
7.1.00.0030.04219.40
7.0.260.0030.01218.14
7.0.250.0060.01017.79
7.0.240.0040.00817.81
7.0.230.0000.01318.02
7.0.220.0000.01217.52
7.0.210.0060.00616.61
7.0.200.0030.00816.88
7.0.190.0040.00816.77
7.0.180.0100.00316.23
7.0.170.0070.00616.04
7.0.160.0070.00716.06
7.0.150.0030.00916.14
7.0.140.0000.01316.23
7.0.130.0060.00616.51
7.0.120.0090.00516.64
7.0.110.0030.01016.43
7.0.100.0030.00916.34
7.0.90.0030.01016.33
7.0.80.0080.00816.17
7.0.70.0090.00516.15
7.0.60.0080.01818.97
7.0.50.0080.02217.00
7.0.40.0050.02618.47
7.0.30.0120.02618.45
7.0.20.0130.04518.23
7.0.10.0050.04918.33
7.0.00.0120.03918.16
5.6.300.0130.05220.68
5.6.290.0130.05020.87
5.6.280.0050.07220.92
5.6.270.0100.05420.94
5.6.260.0030.06120.78
5.6.250.0130.05320.77
5.6.240.0160.05320.95
5.6.230.0100.05620.94
5.6.220.0110.05620.89
5.6.210.0100.05320.62
5.6.200.0100.06619.56
5.6.190.0050.06420.58
5.6.180.0250.06420.55
5.6.170.0250.05820.68
5.6.160.0190.04220.61
5.6.150.0030.05419.54
5.6.140.0000.05519.59
5.6.130.0070.06819.48
5.6.120.0170.06220.93
5.6.110.0100.06920.82
5.6.100.0080.06320.92
5.6.90.0140.04720.88
5.6.80.0080.05820.33
5.6.70.0170.05020.10
5.6.60.0140.05120.09
5.6.50.0130.04920.32
5.6.40.0150.04820.19
5.6.30.0070.05720.25
5.6.20.0070.05720.27
5.6.10.0100.05320.08
5.6.00.0190.04420.05
5.5.380.0070.07417.47
5.5.370.0070.05617.52
5.5.360.0140.05217.43
5.5.350.0160.06118.88
5.5.340.0150.04118.04
5.5.330.0100.05719.19
5.5.320.0120.05819.19
5.5.310.0260.06019.16
5.5.300.0080.06617.96
5.5.290.0080.05718.07
5.5.280.0150.06619.31
5.5.270.0030.06219.42
5.5.260.0100.06119.38
5.5.250.0060.06419.22
5.5.240.0080.06618.79
5.5.230.0000.06517.41
5.5.220.0110.05017.39
5.5.210.0120.04817.49
5.5.200.0030.05917.48
5.5.190.0030.06317.37
5.5.180.0100.05417.39
5.5.160.0110.05017.29
5.5.150.0030.05517.14
5.5.140.0000.06017.29
5.5.130.0070.06017.14
5.5.120.0070.05217.16
5.5.110.0090.05217.28
5.5.100.0000.06217.39
5.5.90.0040.05617.28
5.5.80.0170.05517.18
5.5.70.0100.05517.37
5.5.60.0030.05617.04
5.5.50.0000.05917.36
5.5.40.0180.04217.22
5.5.30.0100.05117.24
5.5.20.0160.04817.01
5.5.10.0130.05017.23
5.5.00.0120.04917.27

preferences:
39.5 ms | 400 KiB | 5 Q