3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $bar = ""; } $foos = ['a' => new Foo()]; $foos['b'] = &$foos['a']; function modifyFoos(array $foos) { $foos['a']->bar = "bar"; } modifyFoos($foos); var_dump($foos); function modifyFoosHandlingReferencesIncorrectly(array $foos) { foreach ($foos as $key => $val) { $foos[$key] = clone $val; } $foos['a']->bar = "baz"; var_dump($foos); } modifyFoosHandlingReferencesIncorrectly($foos); var_dump($foos); function modifyFoosHandlingReferences(array $foos) { $oldFoos = $foos; $foos = []; foreach ($oldFoos as $key => $val) { $foos[$key] = clone $val; } $foos['a']->bar = "barbaz"; } modifyFoosHandlingReferences($foos); var_dump($foos);

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)
8.5.10.0100.00820.29
8.5.00.0140.00719.97
8.4.160.0120.01022.05
8.4.150.0010.00114.05
8.4.140.0160.00517.44
8.4.130.0140.00718.69
8.4.120.0140.00717.46
8.4.110.0120.00919.07
8.4.100.0160.00517.66
8.4.90.0130.00720.52
8.4.80.0110.00618.89
8.4.70.0120.00818.72
8.4.60.0100.00920.54
8.4.50.0070.00318.66
8.4.40.0070.01417.66
8.4.30.0130.00320.45
8.4.20.0030.00617.78
8.4.10.0090.00017.55
8.3.280.0140.01020.14
8.3.270.0100.00916.88
8.3.260.0090.00916.60
8.3.250.0080.00316.50
8.3.240.0120.00816.72
8.3.230.0120.00716.93
8.3.220.0130.00619.16
8.3.210.0110.00916.61
8.3.200.0050.00416.73
8.3.190.0090.01017.30
8.3.180.0130.00718.96
8.3.170.0130.00617.22
8.3.160.0150.00418.40
8.3.150.0070.00716.68
8.3.140.0060.01316.54
8.3.130.0080.00016.60
8.3.120.0030.00618.90
8.3.110.0050.00320.94
8.3.100.0060.00324.06
8.3.90.0100.00026.77
8.3.80.0000.01016.63
8.3.70.0180.00416.75
8.3.60.0150.00016.61
8.3.50.0090.00620.10
8.3.40.0100.00320.29
8.3.30.0090.00618.73
8.3.20.0000.00824.18
8.3.10.0040.00424.66
8.3.00.0080.00026.16
8.2.290.0060.00316.90
8.2.280.0100.01120.08
8.2.270.0100.00618.55
8.2.260.0040.01417.05
8.2.250.0050.00316.63
8.2.240.0030.00717.13
8.2.230.0070.01322.58
8.2.220.0140.00737.54
8.2.210.0090.00026.77
8.2.200.0060.00616.75
8.2.190.0120.00616.58
8.2.180.0140.00325.92
8.2.170.0120.00318.84
8.2.160.0100.00322.96
8.2.150.0040.00425.66
8.2.140.0030.00524.66
8.2.130.0000.00826.16
8.2.120.0000.00826.16
8.2.110.0100.00021.97
8.2.100.0120.00417.72
8.2.90.0080.00018.03
8.2.80.0050.00317.97
8.2.70.0040.00418.03
8.2.60.0000.00818.22
8.2.50.0060.00318.10
8.2.40.0040.00422.37
8.2.30.0000.00719.38
8.2.20.0000.00820.41
8.2.10.0050.00217.79
8.2.00.0040.00419.36
8.1.330.0120.00716.34
8.1.320.0080.01417.71
8.1.310.0030.01018.61
8.1.300.0000.00816.06
8.1.290.0070.00318.88
8.1.280.0060.01625.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0100.00022.26
8.1.230.0040.00722.74
8.1.220.0030.00717.79
8.1.210.0030.00518.77
8.1.200.0030.00717.22
8.1.190.0040.00417.23
8.1.180.0030.00518.10
8.1.170.0030.00518.68
8.1.160.0040.00418.83
8.1.150.0000.00718.71
8.1.140.0070.00017.34
8.1.130.0050.00318.80
8.1.120.0040.00417.41
8.1.110.0080.00017.36
8.1.100.0000.00717.38
8.1.90.0000.00717.50
8.1.80.0000.00817.41
8.1.70.0030.00317.47
8.1.60.0000.00817.50
8.1.50.0040.00417.43
8.1.40.0040.00417.42
8.1.30.0000.00917.64
8.1.20.0040.00417.55
8.1.10.0060.00617.45
8.1.00.0160.00717.52
8.0.300.0040.00419.66
8.0.290.0040.00416.63
8.0.280.0070.00018.45
8.0.270.0050.00216.84
8.0.260.0030.00318.50
8.0.250.0070.00016.95
8.0.240.0000.00816.91
8.0.230.0030.00816.98
8.0.220.0030.00316.91
8.0.210.0070.00016.92
8.0.200.0040.00416.83
8.0.190.0050.00216.96
8.0.180.0070.00016.92
8.0.170.0040.00416.95
8.0.160.0040.00416.94
8.0.150.0050.00316.86
8.0.140.0120.00616.81
8.0.130.0140.00516.87
8.0.120.0170.00316.89
8.0.110.0130.00516.74
8.0.100.0180.00416.81
8.0.90.0140.00516.91
8.0.80.0160.00316.86
8.0.70.0160.00316.90
8.0.60.0110.00716.79
8.0.50.0180.00016.77
8.0.30.0170.00316.82
8.0.20.0140.00516.80
8.0.10.0160.00316.88
7.4.330.0000.00515.55
7.4.320.0030.00316.60
7.4.300.0000.00716.50
7.4.290.0060.00316.34
7.4.280.0050.00316.41
7.4.270.0000.00716.58
7.4.260.0160.00916.57
7.4.250.0140.00716.46
7.4.240.0180.00316.45
7.4.230.0180.00416.57
7.4.220.0150.00316.64
7.4.210.0130.00416.57
7.4.200.0180.00016.45
7.4.190.0140.00416.44
7.4.180.0140.00516.56
7.4.160.0140.00616.63
7.4.150.0130.00416.49
7.4.140.0150.00316.36
7.4.130.0090.00916.44
7.4.120.0140.00316.45
7.4.110.0110.00616.43
7.4.100.0140.00416.30
7.4.90.0150.00416.50
7.4.80.0160.00516.36
7.4.70.0110.00716.51
7.4.60.0180.00016.43
7.4.50.0130.00316.21
7.4.40.0150.00316.34
7.4.30.0170.00016.43
7.4.20.0090.00916.28
7.4.10.0200.00016.40
7.4.00.0140.00316.49

preferences:
17.62 ms | 403 KiB | 5 Q