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run code in 300+ PHP versions simultaneously
<?php class TestClass { public int $a; } $test = new TestClass(); $string = 'foo'; $test->int = &$string; var_dump($test->int); $test->int = []; var_dump($test->int);

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)
8.3.60.0150.00316.75
8.3.50.0120.00618.02
8.3.40.0110.00418.72
8.3.30.0090.01218.51
8.3.20.0050.00224.18
8.3.10.0070.00024.66
8.3.00.0030.00626.16
8.2.180.0060.01225.92
8.2.170.0070.00718.87
8.2.160.0100.00722.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00426.35
8.2.110.0030.00719.39
8.2.100.0120.00017.78
8.2.90.0040.00417.75
8.2.80.0000.00818.64
8.2.70.0040.00417.50
8.2.60.0040.00417.38
8.2.50.0090.00017.55
8.2.40.0000.00818.22
8.2.30.0030.00617.88
8.2.20.0040.00418.03
8.2.10.0040.00419.23
8.2.00.0050.00319.11
8.1.280.0190.00325.92
8.1.270.0090.00023.99
8.1.260.0070.00028.09
8.1.250.0000.00928.09
8.1.240.0060.00321.82
8.1.230.0060.00620.97
8.1.220.0000.00918.56
8.1.210.0040.00418.77
8.1.200.0070.00217.36
8.1.190.0000.00817.23
8.1.180.0050.00318.10
8.1.170.0040.00420.13
8.1.160.0000.00718.70
8.1.150.0000.00718.81
8.1.140.0040.00418.73
8.1.130.0030.00319.98
8.1.120.0070.00017.46
8.1.110.0080.00017.25
8.1.100.0020.00517.39
8.1.90.0020.00517.29
8.1.80.0070.00017.45
8.1.70.0060.00317.32
8.1.60.0030.00617.37
8.1.50.0040.00417.45
8.1.40.0000.00717.46
8.1.30.0050.00317.52
8.1.20.0030.00617.50
8.1.10.0040.00417.49
8.1.00.0080.00017.43
8.0.300.0050.00219.84
8.0.290.0000.00716.63
8.0.280.0050.00218.30
8.0.270.0030.00318.00
8.0.260.0060.00018.38
8.0.250.0020.00516.83
8.0.240.0060.00316.94
8.0.230.0000.00716.76
8.0.220.0000.00716.85
8.0.210.0070.00016.85
8.0.200.0060.00016.91
8.0.190.0040.00416.87
8.0.180.0040.00416.94
8.0.170.0030.00616.82
8.0.160.0030.00516.89
8.0.150.0000.00716.65
8.0.140.0000.00716.62
8.0.130.0000.00613.25
8.0.120.0040.00416.73
8.0.110.0030.00316.89
8.0.100.0030.00316.81
8.0.90.0000.00816.76
8.0.80.0130.00316.82
8.0.70.0000.00816.71
8.0.60.0040.00416.79
8.0.50.0070.00016.77
8.0.30.0030.01316.88
8.0.20.0160.00317.16
8.0.10.0120.00917.06
8.0.00.0110.00717.17
7.4.330.0050.00015.55
7.4.320.0000.00616.44
7.4.300.0040.00416.33
7.4.290.0050.00316.34
7.4.280.0080.00016.35
7.4.270.0000.00716.58
7.4.260.0060.00013.25
7.4.250.0030.00316.40
7.4.240.0040.00416.59
7.4.230.0080.00016.54
7.4.220.0020.00516.56
7.4.210.0040.00916.56
7.4.200.0000.00716.55
7.4.140.0110.00816.26
7.4.130.0160.00416.39
7.4.120.0060.01116.22
7.4.110.0120.00816.38
7.4.100.0130.00316.40
7.4.90.0180.00616.27
7.4.80.0150.00616.55
7.4.70.0060.01816.29
7.4.60.0070.01016.27
7.4.50.0090.00916.50
7.4.40.0060.01316.18
7.4.30.0130.00616.38
7.4.20.0140.00316.41
7.4.10.0100.00716.50
7.4.00.0100.00716.31
7.3.330.0060.00316.19
7.3.320.0030.00312.96
7.3.310.0030.00316.27
7.3.300.0000.00716.16
7.3.290.0040.01216.17
7.3.260.0070.01016.22
7.3.250.0130.01316.17
7.3.240.0060.01116.27
7.3.230.0100.00716.08
7.3.220.0110.00616.30
7.3.210.0040.01716.13
7.3.200.0060.01716.27
7.3.190.0070.01016.20
7.3.180.0110.00616.30
7.3.170.0120.00616.38
7.3.160.0060.01216.07
7.3.150.0080.00816.19
7.3.140.0100.00716.34
7.3.130.0060.01016.34
7.3.120.0120.00916.09
7.3.110.0060.01116.14
7.3.100.0090.00916.20
7.3.90.0100.00716.38
7.3.80.0140.00316.09
7.3.70.0070.01016.13
7.3.60.0090.00816.00
7.3.50.0100.00716.23
7.3.40.0110.00716.00
7.3.30.0130.00616.21
7.3.20.0040.01316.32
7.3.10.0170.00716.21
7.3.00.0180.00016.17

preferences:
62.1 ms | 400 KiB | 5 Q