3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test { private $a; public function __construct($a) { $this->a = $a; } } $b = new Test(1); $a = $b; unset($b); var_dump($b); var_dump($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)
8.3.60.0040.01118.56
8.3.50.0030.01418.30
8.3.40.0060.00918.88
8.3.30.0110.00318.73
8.3.20.0040.00419.21
8.3.10.0040.00423.66
8.3.00.0070.00322.40
8.2.180.0110.00718.18
8.2.170.0120.00622.96
8.2.160.0030.01222.04
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0050.00319.82
8.2.120.0030.00626.35
8.2.110.0060.00322.09
8.2.100.0040.00717.76
8.2.90.0100.00017.75
8.2.80.0040.00419.09
8.2.70.0040.00417.80
8.2.60.0050.00218.09
8.2.50.0050.00318.10
8.2.40.0030.00519.34
8.2.30.0040.00419.23
8.2.20.0030.00617.90
8.2.10.0000.00718.05
8.2.00.0040.00417.55
8.1.280.0110.00725.92
8.1.270.0040.00420.48
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00624.02
8.1.230.0060.00619.09
8.1.220.0030.00517.74
8.1.210.0000.00818.77
8.1.200.0000.00817.35
8.1.190.0090.00017.35
8.1.180.0040.00418.10
8.1.170.0000.00818.65
8.1.160.0000.00718.86
8.1.150.0000.00818.70
8.1.140.0070.00022.05
8.1.130.0000.00620.20
8.1.120.0070.00017.39
8.1.110.0040.00417.40
8.1.100.0000.00817.41
8.1.90.0080.00017.39
8.1.80.0040.00417.29
8.1.70.0040.00417.46
8.1.60.0050.00317.58
8.1.50.0000.00817.41
8.1.40.0030.00517.41
8.1.30.0000.00817.69
8.1.20.0080.00017.55
8.1.10.0070.00017.50
8.1.00.0040.00417.39
8.0.300.0040.00419.73
8.0.290.0050.00316.73
8.0.280.0030.00318.39
8.0.270.0030.00317.15
8.0.260.0000.00718.38
8.0.250.0040.00416.87
8.0.240.0000.00716.95
8.0.230.0070.00016.91
8.0.220.0030.00316.86
8.0.210.0070.00016.84
8.0.200.0050.00216.93
8.0.190.0000.00816.88
8.0.180.0030.00516.88
8.0.170.0030.00616.92
8.0.160.0030.00616.96
8.0.150.0030.00516.78
8.0.140.0000.00716.86
8.0.130.0000.00613.27
8.0.120.0000.00816.72
8.0.110.0000.00716.93
8.0.100.0040.00416.97
8.0.90.0040.00416.89
8.0.80.0070.00716.84
8.0.70.0050.00316.91
8.0.60.0040.00416.80
8.0.50.0000.00716.73
8.0.30.0060.01117.31
8.0.20.0130.00617.40
8.0.10.0070.00017.08
8.0.00.0090.00916.70
7.4.330.0000.00615.55
7.4.320.0000.00716.50
7.4.300.0030.00316.56
7.4.290.0030.00316.50
7.4.280.0030.00916.50
7.4.270.0050.00316.60
7.4.260.0000.00716.47
7.4.250.0000.00916.46
7.4.240.0030.00316.63
7.4.230.0070.00016.44
7.4.220.0030.00616.61
7.4.210.0070.01316.54
7.4.200.0030.00316.63
7.4.160.0100.00716.50
7.4.140.0090.01017.86
7.4.130.0070.01016.62
7.4.120.0090.00916.46
7.3.330.0000.00513.19
7.3.320.0030.00313.33
7.3.310.0090.00016.30
7.3.300.0040.00416.40
7.3.290.0030.00316.32
7.3.280.0060.01116.34
7.3.260.0080.00916.55
7.3.240.0130.00716.46
7.2.100.0270.00314.86

preferences:
43.19 ms | 401 KiB | 5 Q