3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private int $i = 1; public function __toString(): string { return (string)$this->i++; } } const CONSTANT = new A; class B { public const ClassConstant1 = '' . CONSTANT; public const ClassConstant2 = '' . CONSTANT; public const ClassConstant3 = '' . CONSTANT; public const ClassConstant4 = '' . CONSTANT; public const Constants = [ self::ClassConstant1, self::ClassConstant2, self::ClassConstant3, self::ClassConstant4, ]; } var_dump(B::ClassConstant4); var_dump(B::ClassConstant3); var_dump(B::ClassConstant2); var_dump(B::ClassConstant1); var_dump(B::Constants);

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)
8.4.140.0130.00817.66
8.4.130.0120.00917.88
8.4.120.0060.00220.77
8.4.110.0130.00522.39
8.4.100.0110.00817.72
8.4.90.0160.00519.48
8.4.80.0130.00817.79
8.4.70.0060.00417.80
8.4.60.0130.00817.86
8.4.50.0130.00817.59
8.3.270.0090.01016.78
8.3.260.0110.00916.75
8.3.250.0040.00419.17
8.3.240.0130.00616.79
8.3.230.0100.00916.31
8.3.220.0090.00917.26
8.3.210.0120.00716.73
8.3.200.0110.00816.94
8.3.190.0130.00716.86
8.3.180.0100.00816.53
8.3.50.0110.01016.62
8.2.290.0160.00320.45
8.2.280.0080.01017.04
8.1.330.0080.01118.27
8.1.320.0140.00615.91
8.1.70.0090.00617.38
8.1.60.0160.00317.46
8.1.50.0110.00817.51
8.1.40.0110.00817.53
8.1.30.0050.00517.54
8.1.20.0150.00017.67
8.1.10.0100.00017.48
8.1.00.0020.00717.37
8.0.200.0050.00516.68
8.0.190.0050.00216.86
8.0.180.0040.00416.75
8.0.170.0000.00716.68
8.0.160.0110.00016.65
8.0.150.0030.01016.67
8.0.140.0120.00216.72
8.0.130.0120.00416.74
8.0.120.0130.00316.87
8.0.110.0120.00416.75
8.0.100.0060.01016.71
8.0.90.0100.00616.79
8.0.80.0110.00716.78
8.0.70.0140.00316.77
8.0.60.0100.00616.73
8.0.50.0120.00416.79
8.0.30.0160.00016.82
8.0.20.0000.01516.72
8.0.10.0100.00316.97
7.4.300.0120.00416.27
7.4.290.0140.00316.43
7.4.280.0150.00316.33
7.4.270.0130.00416.31
7.4.260.0150.00216.40
7.4.250.0110.00716.40
7.4.240.0150.00416.38
7.4.230.0120.00616.36
7.4.220.0110.00616.42
7.4.210.0080.00816.48
7.4.200.0110.00416.28
7.4.190.0080.00816.45
7.4.180.0110.00316.30
7.4.160.0110.00416.39
7.4.150.0090.00616.25
7.4.140.0100.00516.36
7.4.130.0110.00416.09
7.4.120.0110.00416.23
7.4.110.0070.00716.27
7.4.100.0110.00416.40
7.4.90.0090.00516.27
7.4.80.0100.00516.05
7.4.70.0100.00516.29
7.4.60.0100.00516.23
7.4.50.0090.00616.03
7.4.40.0140.00015.97
7.4.30.0030.00316.24
7.4.20.0000.00716.13
7.4.10.0030.00316.22
7.4.00.0030.00316.17

preferences:
27.4 ms | 403 KiB | 5 Q