3v4l.org

run code in 300+ PHP versions simultaneously
<?php $alias_list = []; $alias_autoloader = function($class_name) use (&$alias_list) { var_dump($alias_list); if (isset($alias_list[strtolower($class_name)])) { class_alias($class_name, $alias_list[strtolower($class_name)]); return true; } }; $alias = function($from, $to) use (&$alias_list) { $alias_list[strtolower($to)] = $from; }; spl_autoload_register($alias_autoloader); class Foo { function test() { return get_class_name($this); } } class BarCollision extends Foo { } $alias('Foo', 'Bar'); $alias('Foo', 'BarCollision'); $b = new Bar; $c = new BarCollision; var_dump($b->test(), $c->test());

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)
8.3.60.0090.00616.50
8.3.50.0070.01418.30
8.3.40.0110.00718.96
8.3.30.0070.00718.85
8.3.20.0070.00019.94
8.3.10.0030.00623.60
8.3.00.0000.00819.27
8.2.180.0140.00718.41
8.2.170.0090.01222.96
8.2.160.0100.00720.38
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00520.39
8.2.120.0040.00426.35
8.2.110.0060.00319.45
8.2.100.0150.00017.91
8.2.90.0000.00822.23
8.2.80.0040.00419.26
8.2.70.0080.00017.93
8.2.60.0040.00417.93
8.2.50.0050.00318.10
8.2.40.0040.00420.40
8.2.30.0000.00720.78
8.2.20.0090.00017.75
8.2.10.0000.00718.06
8.2.00.0000.00718.25
8.1.280.0100.01025.92
8.1.270.0090.00023.79
8.1.260.0000.00728.09
8.1.250.0060.00328.09
8.1.240.0060.00322.59
8.1.230.0090.00320.90
8.1.220.0040.00417.74
8.1.210.0040.00418.86
8.1.200.0050.00317.48
8.1.190.0080.00017.35
8.1.180.0040.00418.10
8.1.170.0040.00718.66
8.1.160.0060.00322.04
8.1.150.0040.00418.96
8.1.140.0030.00619.60
8.1.130.0040.00417.73
8.1.120.0000.00717.39
8.1.110.0000.00717.38
8.1.100.0030.00617.43
8.1.90.0030.00617.34
8.1.80.0030.00517.49
8.1.70.0030.00517.46
8.1.60.0040.00417.64
8.1.50.0030.00517.50
8.1.40.0040.00417.56
8.1.30.0040.00417.54
8.1.20.0080.00017.70
8.1.10.0040.00417.61
8.1.00.0070.00017.52
8.0.300.0030.00619.86
8.0.290.0040.00416.88
8.0.280.0030.00318.36
8.0.270.0000.00717.14
8.0.260.0030.00317.17
8.0.250.0000.00716.93
8.0.240.0000.00717.07
8.0.230.0000.00717.07
8.0.220.0000.00817.02
8.0.210.0070.00016.88
8.0.200.0060.00016.92
8.0.190.0000.00817.01
8.0.180.0070.00017.05
8.0.170.0000.00717.01
8.0.160.0040.00416.97
8.0.150.0040.00416.93
8.0.140.0030.00516.93
8.0.130.0000.00813.38
8.0.120.0040.00416.92
8.0.110.0040.00416.93
8.0.100.0080.00016.91
8.0.90.0040.00416.95
8.0.80.0100.00716.89
8.0.70.0000.00716.83
8.0.60.0000.00717.09
8.0.50.0040.00417.08
8.0.30.0100.01017.28
8.0.20.0080.01117.40
8.0.10.0040.00417.05
8.0.00.0100.00816.96
7.4.330.0000.00516.83
7.4.320.0070.00016.55
7.4.300.0000.00816.54
7.4.290.0050.00216.51
7.4.280.0000.00816.65
7.4.270.0030.00316.52
7.4.260.0000.00716.64
7.4.250.0050.00316.58
7.4.240.0030.00416.48
7.4.230.0030.00316.61
7.4.220.0090.00916.73
7.4.210.0070.00716.66
7.4.200.0040.00416.71
7.4.160.0000.01516.52
7.4.150.0130.00517.40
7.4.140.0100.01417.86
7.4.130.0050.01316.55
7.4.120.0110.00816.67
7.4.110.0130.00416.56
7.4.100.0060.01216.60
7.4.90.0160.00016.71
7.4.80.0170.00719.39
7.4.70.0110.00716.60
7.4.60.0080.00816.48
7.4.50.0070.00716.69
7.4.40.0060.01016.62
7.4.30.0080.00816.41
7.4.00.0030.00815.14
7.3.330.0000.00613.32
7.3.320.0000.00613.44
7.3.310.0000.00716.46
7.3.300.0060.00016.32
7.3.290.0110.00416.45
7.3.280.0070.00916.45
7.3.270.0060.01217.40
7.3.260.0070.01016.74
7.3.250.0090.01216.43
7.3.240.0080.01016.52
7.3.230.0140.00316.46
7.3.210.0090.01416.51
7.3.200.0130.01016.58
7.3.190.0060.01016.39
7.3.180.0060.01316.56
7.3.170.0070.01416.54
7.3.160.0120.00616.73
7.2.330.0100.00716.58
7.2.320.0130.00416.78
7.2.310.0150.00316.42
7.2.300.0120.00616.52
7.2.290.0030.01316.73
7.2.60.0090.00616.75
7.2.00.0000.00919.58
7.1.200.0060.00315.89
7.1.100.0000.01318.14
7.1.70.0040.00416.70
7.1.60.0060.01919.36
7.1.50.0030.01617.02
7.1.00.0000.08022.37
7.0.200.0000.00916.78
7.0.60.0130.07719.95
7.0.50.0030.04017.89
7.0.40.0130.07320.20
7.0.30.0030.05020.34
7.0.20.0300.05320.33
7.0.10.0100.08720.33
7.0.00.0130.08720.11
5.6.280.0030.03321.11
5.6.210.0100.07320.66
5.6.200.0000.04718.13
5.6.190.0070.07020.61
5.6.180.0470.07320.77
5.6.170.0170.04720.71
5.6.160.0070.08320.46
5.6.150.0070.05318.23
5.6.140.0070.04318.23
5.6.130.0070.07018.21
5.6.120.0030.09320.97
5.6.110.0130.06321.02
5.6.100.0100.04321.08
5.6.90.0100.05021.08
5.6.80.0100.07020.54
5.5.350.0200.08320.42
5.5.340.0030.08317.98
5.5.330.0030.04020.47
5.5.320.0030.04020.38
5.5.310.0300.07720.51
5.5.300.0000.04017.96
5.5.290.0070.08018.02
5.5.280.0070.08720.81
5.5.270.0030.06020.69
5.5.260.0100.07720.89
5.5.250.0100.08020.67
5.5.240.0330.05720.17

preferences:
40.4 ms | 400 KiB | 5 Q