3v4l.org

run code in 300+ PHP versions simultaneously
<?php function __autoload($class) { var_dump("autoloading $class\n"); switch ($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)
8.3.60.0080.01116.63
8.3.50.0120.00316.21
8.3.40.0070.00718.81
8.3.30.0110.00418.64
8.3.20.0070.00020.16
8.3.10.0000.00821.73
8.3.00.0040.00423.48
8.2.180.0070.00716.38
8.2.170.0080.00622.96
8.2.160.0030.01020.39
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0000.00819.64
8.2.120.0000.00826.35
8.2.110.0060.00322.21
8.2.100.0080.00317.91
8.2.90.0000.00719.11
8.2.80.0030.00617.97
8.2.70.0050.00517.38
8.2.60.0050.00317.68
8.2.50.0060.00318.07
8.2.40.0000.00922.27
8.2.30.0050.00319.16
8.2.20.0000.00717.43
8.2.10.0080.00018.00
8.2.00.0070.00017.86
8.1.280.0140.00725.92
8.1.270.0190.00023.96
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0120.00320.50
8.1.230.0060.00619.08
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0100.00016.88
8.1.180.0040.00418.10
8.1.170.0040.00418.57
8.1.160.0000.00820.56
8.1.150.0040.00418.67
8.1.140.0000.01019.36
8.1.130.0030.00317.57
8.1.120.0040.00417.23
8.1.110.0050.00217.22
8.1.100.0030.00517.25
8.1.90.0050.00317.38
8.1.80.0000.00817.19
8.1.70.0070.00017.35
8.1.60.0040.00417.46
8.1.50.0030.00617.28
8.1.40.0020.00517.36
8.1.30.0080.00017.45
8.1.20.0000.00717.36
8.1.10.0000.00817.38
8.1.00.0060.00317.24
8.0.300.0050.00218.77
8.0.290.0050.00316.59
8.0.280.0040.00418.37
8.0.270.0030.00317.05
8.0.260.0030.00317.10
8.0.250.0030.00316.80
8.0.240.0000.00816.75
8.0.230.0030.00316.83
8.0.220.0080.00016.80
8.0.210.0030.00316.79
8.0.200.0030.00316.80
8.0.190.0040.00416.89
8.0.180.0000.00716.77
8.0.170.0030.00516.77
8.0.160.0050.00316.83
8.0.150.0000.00716.72
8.0.140.0030.00316.75
8.0.130.0030.00613.24
8.0.120.0050.00316.82
8.0.110.0040.00416.85
8.0.100.0070.00016.80
8.0.90.0050.00316.88
8.0.80.0120.00316.81
8.0.70.0040.00416.79
8.0.60.0040.00416.66
8.0.50.0040.00416.86
8.0.30.0080.01216.88
8.0.20.0100.00917.40
8.0.10.0070.00016.95
8.0.00.0100.00716.60
7.4.330.0020.00216.70
7.4.320.0030.00316.39
7.4.300.0000.00716.52
7.4.290.0000.00616.38
7.4.280.0040.00416.55
7.4.270.0030.00316.37
7.4.260.0000.00716.53
7.4.250.0000.00716.42
7.4.240.0020.00516.49
7.4.230.0000.00716.61
7.4.220.0120.00416.46
7.4.210.0060.01316.65
7.4.200.0030.00316.54
7.4.160.0060.00916.30
7.4.150.0070.01117.40
7.4.140.0130.00517.86
7.4.130.0080.00916.36
7.4.120.0100.00716.48
7.4.110.0100.00616.59
7.4.100.0040.01216.48
7.4.90.0070.01016.47
7.4.80.0080.00819.39
7.4.70.0070.01016.41
7.4.60.0160.00016.45
7.4.50.0110.00416.58
7.4.40.0110.01016.20
7.4.30.0140.00616.64
7.4.00.0070.00714.71
7.3.330.0000.00613.34
7.3.320.0030.00313.19
7.3.310.0040.00416.26
7.3.300.0060.00016.41
7.3.290.0110.00616.31
7.3.280.0110.01016.34
7.3.270.0120.00617.40
7.3.260.0110.00516.38
7.3.240.0060.01116.53
7.3.230.0140.00316.64
7.3.210.0110.00716.52
7.3.200.0130.00419.39
7.3.190.0100.00716.37
7.3.180.0120.00816.28
7.3.170.0090.00816.59
7.3.160.0080.00716.25
7.3.10.0080.00816.48
7.3.00.0040.00816.38
7.2.330.0150.01516.61
7.2.320.0030.01516.67
7.2.310.0130.00816.51
7.2.300.0190.00016.19
7.2.290.0080.01116.36
7.2.130.0030.00716.72
7.2.120.0030.01016.75
7.2.110.0000.00916.58
7.2.100.0000.00916.79
7.2.90.0070.00716.61
7.2.80.0100.00316.46
7.2.70.0060.00616.82
7.2.60.0070.00716.62
7.2.50.0130.00016.90
7.2.40.0030.01116.54
7.2.30.0060.00616.69
7.2.20.0040.01116.67
7.2.10.0040.01316.58
7.2.00.0110.00317.80
7.1.250.0040.00415.73
7.1.200.0110.01115.32
7.1.100.0030.01018.04
7.1.70.0070.00317.13
7.1.60.0070.01719.30
7.1.50.0080.00417.09
7.1.00.0100.07022.57
7.0.200.0000.00816.63
7.0.60.0070.03321.66
7.0.50.0070.05717.88
7.0.40.0000.07720.18
7.0.30.0270.07720.26
7.0.20.0300.07020.12
7.0.10.0130.08020.36
7.0.00.0030.07320.12
5.6.280.0070.05320.90
5.6.210.0070.08320.46
5.6.200.0130.07318.16
5.6.190.0130.08020.55
5.6.180.0400.06320.52
5.6.170.0170.05320.50
5.6.160.0130.07720.50
5.6.150.0100.03318.23
5.6.140.0070.03718.19
5.6.130.0070.08018.14
5.6.120.0100.04021.12
5.6.110.0130.07021.14
5.6.100.0170.07021.12
5.6.90.0130.08020.88
5.6.80.0070.05720.39
5.5.350.0130.04720.53
5.5.340.0030.04017.99
5.5.330.0070.07320.37
5.5.320.0570.07020.33
5.5.310.0230.04720.32
5.5.300.0070.04317.97
5.5.290.0000.04317.94
5.5.280.0030.05320.89
5.5.270.0170.07320.77
5.5.260.0000.07020.77
5.5.250.0100.07320.59
5.5.240.0200.03720.13

preferences:
48.22 ms | 400 KiB | 5 Q