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run code in 300+ PHP versions simultaneously
<?php namespace namespace_breaks_mario_solution_but_not_hans_solution; class C { public const WUT=5; } $v = "WUT"; var_dump(constant(C::class . "::$v")); // << hans solution var_dump(constant("C::$v")); // << mario solution, crash in namespace

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)
8.4.130.0100.00417.86
8.4.120.0080.01120.61
8.4.110.0050.00518.96
8.4.100.0030.00617.97
8.4.90.0120.00517.83
8.4.80.0060.00218.05
8.4.70.0140.00718.11
8.4.60.0080.00817.86
8.4.50.0120.00818.03
8.4.40.0090.01217.65
8.4.30.0070.01118.68
8.4.20.0100.01018.06
8.4.10.0030.00619.41
8.3.260.0120.00716.82
8.3.250.0040.00518.94
8.3.240.0090.00816.64
8.3.230.0130.00616.54
8.3.220.0110.00717.04
8.3.210.0100.00316.46
8.3.200.0110.00816.57
8.3.190.0040.00616.87
8.3.180.0130.00516.46
8.3.170.0060.01218.70
8.3.160.0000.00719.98
8.3.150.0120.00016.70
8.3.140.0040.01416.93
8.3.130.0080.00018.51
8.3.120.0090.00020.70
8.3.110.0090.00020.94
8.3.100.0090.00024.06
8.3.90.0050.00326.77
8.3.80.0090.00018.55
8.3.70.0140.00718.56
8.3.60.0150.00616.88
8.3.50.0120.00316.66
8.3.40.0060.00920.47
8.3.30.0110.00421.96
8.3.20.0000.00724.18
8.3.10.0070.00024.66
8.3.00.0100.01028.09
8.2.290.0130.00620.66
8.2.280.0130.00720.44
8.2.270.0040.00417.06
8.2.260.0150.00318.27
8.2.250.0040.01118.55
8.2.240.0120.00818.73
8.2.230.0040.00422.58
8.2.220.0060.00337.54
8.2.210.0090.00926.77
8.2.200.0060.00318.41
8.2.190.0140.00416.63
8.2.180.0180.00316.75
8.2.170.0160.00019.04
8.2.160.0130.00322.96
8.2.150.0050.00325.66
8.2.140.0040.00424.66
8.2.130.0150.00428.09
8.2.120.0090.00928.09
8.2.110.0160.00328.09
8.2.100.0110.00828.09
8.2.90.0090.00928.09
8.2.80.0120.00628.09
8.2.70.0110.00728.09
8.2.60.0090.00928.09
8.2.50.0120.00628.09
8.2.40.0090.00928.09
8.2.30.0170.00328.09
8.2.20.0100.01028.09
8.2.10.0120.00328.09
8.2.00.0060.00928.09
8.1.330.0110.00816.19
8.1.320.0100.00915.85
8.1.310.0160.00318.37
8.1.300.0030.00619.81
8.1.290.0090.00030.84
8.1.280.0120.00325.92
8.1.270.0040.00423.70
8.1.260.0120.00828.09
8.1.250.0100.01028.09
8.1.240.0160.00328.09
8.1.230.0150.00028.09
8.1.220.0120.00328.09
8.1.210.0040.01128.09
8.1.200.0160.00028.09
8.1.190.0030.01228.09
8.1.180.0000.01528.09
8.1.170.0040.00428.09
8.1.160.0000.00828.09
8.1.150.0070.00728.09
8.1.140.0030.00628.09
8.1.130.0040.00428.09
8.1.120.0040.01128.09
8.1.110.0090.00028.09
8.1.100.0110.00428.09
8.1.90.0110.00428.09
8.1.80.0110.00428.09
8.1.70.0030.01328.09
8.1.60.0090.00028.09
8.1.50.0130.00028.09
8.1.40.0080.00028.09
8.1.30.0030.00528.09
8.1.20.0050.00328.09
8.1.10.0060.00328.09
8.1.00.0050.00328.09

preferences:
33.03 ms | 403 KiB | 5 Q