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) { $alias_list[$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)
8.3.60.0140.00716.63
8.3.50.0070.01117.90
8.3.40.0110.00718.69
8.3.30.0040.01218.66
8.3.20.0070.00020.32
8.3.10.0040.00423.48
8.3.00.0060.00319.27
8.2.180.0180.00418.54
8.2.170.0060.01522.96
8.2.160.0040.01120.35
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0000.00920.27
8.2.120.0080.00026.35
8.2.110.0070.00319.27
8.2.100.0040.00817.77
8.2.90.0050.00318.28
8.2.80.0040.00417.97
8.2.70.0050.00318.04
8.2.60.0000.00917.93
8.2.50.0040.00418.10
8.2.40.0000.00720.62
8.2.30.0000.00720.70
8.2.20.0000.01017.65
8.2.10.0020.00518.21
8.2.00.0040.00418.20
8.1.280.0120.00625.92
8.1.270.0090.00923.91
8.1.260.0000.00728.09
8.1.250.0080.00028.09
8.1.240.0090.00022.50
8.1.230.0080.00422.82
8.1.220.0040.00417.76
8.1.210.0050.00318.91
8.1.200.0000.01117.38
8.1.190.0090.00017.36
8.1.180.0050.00318.10
8.1.170.0050.00518.43
8.1.160.0050.00222.04
8.1.150.0050.00318.91
8.1.140.0060.00319.59
8.1.130.0000.00717.39
8.1.120.0050.00217.55
8.1.110.0040.00417.39
8.1.100.0050.00317.52
8.1.90.0050.00317.55
8.1.80.0040.00417.48
8.1.70.0000.00717.29
8.1.60.0040.00417.65
8.1.50.0030.00617.39
8.1.40.0060.00317.45
8.1.30.0050.00317.67
8.1.20.0000.00817.56
8.1.10.0040.00417.63
8.1.00.0040.00417.45
8.0.300.0050.00220.03
8.0.290.0040.00416.75
8.0.280.0000.00818.39
8.0.270.0000.00816.81
8.0.260.0000.00716.89
8.0.250.0000.00716.93
8.0.240.0020.00517.00
8.0.230.0000.00717.06
8.0.220.0000.00716.93
8.0.210.0070.00017.01
8.0.200.0030.00317.06
8.0.190.0060.00316.93
8.0.180.0030.00516.97
8.0.170.0070.00016.98
8.0.160.0050.00316.90
8.0.150.0000.00716.88
8.0.140.0000.00716.84
8.0.130.0000.00913.44
8.0.120.0040.00416.99
8.0.110.0000.00716.95
8.0.100.0080.00016.88
8.0.90.0000.00716.98
8.0.80.0030.01416.86
8.0.70.0080.00016.88
8.0.60.0000.00716.91
8.0.50.0000.00717.01
8.0.30.0080.01217.15
8.0.20.0080.01117.40
8.0.10.0020.00517.09
8.0.00.0100.01016.80
7.4.330.0000.00516.66
7.4.320.0030.00316.60
7.4.300.0040.00416.64
7.4.290.0030.00316.44
7.4.280.0000.00816.63
7.4.270.0070.00016.38
7.4.260.0040.00416.43
7.4.250.0000.00816.57
7.4.240.0020.00516.52
7.4.230.0000.00716.32
7.4.220.0100.01316.65
7.4.210.0030.01016.61
7.4.200.0000.00716.71
7.4.160.0090.00616.45
7.4.150.0120.00617.40
7.4.140.0120.01617.86
7.4.130.0100.00716.53
7.4.120.0090.01016.59
7.4.110.0170.00016.42
7.4.100.0110.01416.56
7.4.90.0120.00616.75
7.4.80.0120.01219.39
7.4.70.0070.01016.71
7.4.60.0060.00916.61
7.4.50.0040.01116.59
7.4.40.0080.00816.38
7.4.30.0070.01116.46
7.4.00.0070.00715.24
7.3.330.0030.00313.28
7.3.320.0030.00313.41
7.3.310.0040.00416.34
7.3.300.0030.00316.42
7.3.290.0090.00616.43
7.3.280.0090.00816.44
7.3.270.0090.00917.40
7.3.260.0100.00716.52
7.3.250.0120.00716.38
7.3.240.0150.00516.67
7.3.230.0120.00916.65
7.3.210.0100.01416.45
7.3.200.0140.00716.39
7.3.190.0080.00816.52
7.3.180.0130.00416.57
7.3.170.0160.00716.55
7.3.160.0000.01816.45
7.3.10.0110.00816.14
7.3.00.0080.00816.41
7.2.330.0170.00716.69
7.2.320.0060.01216.57
7.2.310.0060.01716.55
7.2.300.0030.01716.72
7.2.290.0100.00716.70
7.2.130.0140.00716.14
7.2.120.0090.00316.74
7.2.110.0120.00616.85
7.2.100.0100.01016.10
7.2.90.0190.00016.58
7.2.80.0090.00916.34
7.2.70.0130.00716.38
7.2.60.0090.00516.64
7.2.50.0110.00716.26
7.2.40.0110.00416.24
7.2.30.0100.00716.41
7.2.20.0030.01016.29
7.2.10.0070.01116.26
7.2.00.0050.01018.19
7.1.250.0090.00415.28
7.1.200.0070.00715.84
7.1.100.0060.00918.21
7.1.70.0030.00616.93
7.1.60.0170.00719.36
7.1.50.0090.00617.03
7.1.00.0100.07022.48
7.0.200.0040.00416.94
7.0.60.0070.07719.93
7.0.50.0070.04317.99
7.0.40.0130.04720.05
7.0.30.0170.04720.10
7.0.20.0300.03720.23
7.0.10.0100.05320.19
7.0.00.0070.08720.02
5.6.280.0070.03021.13
5.6.210.0100.08320.73
5.6.200.0070.04718.17
5.6.190.0070.05720.47
5.6.180.0470.06720.52
5.6.170.0300.06720.71
5.6.160.0030.08720.45
5.6.150.0100.07318.21
5.6.140.0070.07318.14
5.6.130.0030.04718.15
5.6.120.0070.04720.95
5.6.110.0030.08721.02
5.6.100.0030.07321.14
5.6.90.0170.08021.04
5.6.80.0100.06720.51
5.5.350.0300.06720.36
5.5.340.0000.05717.95
5.5.330.0030.04020.25
5.5.320.0030.03720.32
5.5.310.0400.07320.32
5.5.300.0030.04017.95
5.5.290.0030.08718.08
5.5.280.0130.07720.77
5.5.270.0030.06720.95
5.5.260.0100.07320.64
5.5.250.0100.08020.59
5.5.240.0170.08320.27

preferences:
47.98 ms | 400 KiB | 5 Q