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run code in 300+ PHP versions simultaneously
<?php class Subclass extends DateTimeImmutable { public function __construct() { parent::__construct(); var_dump("construc"); } } $foo = new Subclass('2023-01-01 12:12:13'); $foo2 = $foo->modify('+7 days'); /** @psalm-trace $foo2 */ echo get_class($foo2);

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)
8.4.120.0120.00724.02
8.4.110.0140.00622.50
8.4.100.0080.00818.15
8.4.90.0100.01120.64
8.4.80.0040.00619.18
8.4.70.0120.00920.75
8.4.60.0110.01220.51
8.4.50.0100.00917.92
8.4.40.0100.01019.20
8.4.30.0110.00720.75
8.4.20.0080.01226.02
8.4.10.0100.00623.70
8.3.250.0120.00718.55
8.3.240.0100.00817.23
8.3.230.0090.01016.92
8.3.220.0070.00120.69
8.3.210.0110.00918.41
8.3.200.0070.00216.65
8.3.190.0120.00717.15
8.3.180.0110.00817.36
8.3.170.0120.00318.84
8.3.160.0070.00016.74
8.3.150.0180.00017.11
8.3.140.0000.00818.78
8.3.130.0060.00318.35
8.3.120.0030.00619.07
8.3.110.0050.00320.94
8.3.100.0080.00016.68
8.3.90.0110.00426.77
8.3.80.0060.00318.43
8.3.70.0120.00918.38
8.3.60.0080.00816.75
8.3.50.0150.00616.57
8.3.40.0070.00720.25
8.3.30.0180.00018.83
8.3.20.0070.00024.18
8.3.10.0040.00424.66
8.3.00.0080.00026.16
8.2.290.0120.00817.21
8.2.280.0120.00918.48
8.2.270.0130.00617.20
8.2.260.0190.00016.59
8.2.250.0140.00016.64
8.2.240.0060.00319.14
8.2.230.0080.00022.58
8.2.220.0030.00624.06
8.2.210.0080.00826.77
8.2.200.0040.00418.41
8.2.190.0090.00616.75
8.2.180.0000.01516.63
8.2.170.0170.00322.96
8.2.160.0110.00322.96
8.2.150.0070.00025.66
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00620.74
8.2.110.0000.00922.36
8.2.100.0060.00618.03
8.2.90.0080.00019.18
8.2.80.0040.00418.05
8.2.70.0040.00417.63
8.2.60.0000.00817.93
8.2.50.0000.00818.10
8.2.40.0040.00422.32
8.2.30.0020.00518.18
8.2.20.0020.00519.24
8.2.10.0000.00718.03
8.2.00.0040.00520.80
8.1.330.0120.00716.06
8.1.320.0130.00816.23
8.1.310.0130.00316.35
8.1.300.0000.00818.41
8.1.290.0060.00330.84
8.1.280.0140.00425.92
8.1.270.0040.00424.66
8.1.260.0060.00326.35
8.1.250.0080.00028.09
8.1.240.0060.00323.92
8.1.230.0060.00617.69
8.1.220.0080.00017.88
8.1.210.0040.00418.77
8.1.200.0030.00617.60
8.1.190.0030.00617.48
8.1.180.0090.00018.10
8.1.170.0000.00818.77
8.1.160.0070.00022.04
8.1.150.0040.00418.70
8.1.140.0050.00317.55
8.1.130.0060.00519.63
8.1.120.0070.00419.73
8.1.110.0080.00318.84
8.1.100.0090.00318.83
8.1.90.0090.00218.79
8.1.80.0090.00218.88
8.1.70.0060.00418.86
8.1.60.0090.00518.97
8.1.50.0110.00318.87
8.1.40.0120.00318.93
8.1.30.0120.00218.95
8.1.20.0110.00519.00
8.1.10.0130.00318.97
8.1.00.0110.00518.91
8.0.300.0060.00318.77
8.0.290.0000.00716.88
8.0.280.0070.00018.47
8.0.270.0070.00017.27
8.0.260.0060.00718.26
8.0.250.0100.00218.25
8.0.240.0060.00618.29
8.0.230.0090.00318.22
8.0.220.0000.01218.16
8.0.210.0060.00518.13
8.0.200.0150.00018.14
8.0.190.0030.01018.25
8.0.180.0100.00418.23
8.0.170.0090.00518.17
8.0.160.0100.00318.23
8.0.150.0090.00518.14
8.0.140.0070.00618.12
8.0.130.0080.00518.13
8.0.120.0100.00518.25
8.0.110.0090.00618.15
8.0.100.0080.00718.14
8.0.90.0120.00218.12
8.0.80.0140.00018.15
8.0.70.0020.01118.18
8.0.60.0090.00318.14
8.0.50.0100.00218.17
8.0.30.0070.00618.12
8.0.20.0120.00118.23
8.0.10.0090.00318.24

preferences:
30.36 ms | 403 KiB | 5 Q