3v4l.org

run code in 300+ PHP versions simultaneously
<?php $alias_list = []; $alias_autoloader = function($class_name) use (&$alias_list) { if (isset($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('Bar', 'Foo'); $alias('BarCollision', 'Foo'); $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)
8.3.60.0110.00718.64
8.3.50.0140.00821.91
8.3.40.0090.00618.54
8.3.30.0040.01218.79
8.3.20.0080.00020.34
8.3.10.0040.00423.70
8.3.00.0040.00419.38
8.2.180.0140.00318.54
8.2.170.0150.00422.96
8.2.160.0070.00720.43
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0060.00320.43
8.2.120.0040.00426.35
8.2.110.0030.00720.39
8.2.100.0090.00317.88
8.2.90.0040.00419.31
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0060.00318.07
8.2.40.0050.00519.21
8.2.30.0040.00420.68
8.2.20.0000.00817.79
8.2.10.0040.00418.25
8.2.00.0000.00718.06
8.1.280.0140.00725.92
8.1.270.0060.00323.84
8.1.260.0060.00328.09
8.1.250.0060.00328.09
8.1.240.0040.00420.79
8.1.230.0040.00717.48
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0060.00317.35
8.1.190.0040.00417.64
8.1.180.0050.00318.10
8.1.170.0030.00518.59
8.1.160.0040.00421.96
8.1.150.0070.00018.88
8.1.140.0090.00019.59
8.1.130.0030.00317.74
8.1.120.0000.00817.55
8.1.110.0040.00417.39
8.1.100.0000.00817.41
8.1.90.0040.00417.39
8.1.80.0070.00017.52
8.1.70.0000.00717.52
8.1.60.0040.00417.51
8.1.50.0000.00817.47
8.1.40.0050.00317.43
8.1.30.0000.00817.70
8.1.20.0040.00417.52
8.1.10.0040.00417.48
8.1.00.0040.00417.43
8.0.300.0000.00818.77
8.0.290.0040.00416.88
8.0.280.0000.00818.45
8.0.270.0040.00417.19
8.0.260.0030.00317.15
8.0.250.0030.00316.98
8.0.240.0000.00716.95
8.0.230.0000.00716.93
8.0.220.0040.00416.95
8.0.210.0000.00816.87
8.0.200.0030.00317.02
8.0.190.0000.00717.10
8.0.180.0000.00716.96
8.0.170.0080.00017.00
8.0.160.0030.00616.96
8.0.150.0040.00416.75
8.0.140.0040.00416.81
8.0.130.0040.00413.42
8.0.120.0060.00316.93
8.0.110.0040.00416.98
8.0.100.0040.00416.84
8.0.90.0040.00416.84
8.0.80.0140.01016.95
8.0.70.0050.00316.89
8.0.60.0030.00517.04
8.0.50.0040.00416.84
8.0.30.0070.01517.35
8.0.20.0120.00717.40
8.0.10.0000.00716.90
8.0.00.0100.00816.95
7.4.330.0020.00216.84
7.4.320.0000.00616.63
7.4.300.0030.00316.42
7.4.290.0040.00416.67
7.4.280.0080.00016.50
7.4.270.0030.00316.48
7.4.260.0080.00016.59
7.4.250.0070.00016.48
7.4.240.0050.00316.60
7.4.230.0040.00416.52
7.4.220.0190.00316.70
7.4.210.0030.01016.48
7.4.200.0030.00316.44
7.4.160.0100.00616.46
7.4.150.0190.00317.40
7.4.140.0070.01317.86
7.4.130.0080.01216.67
7.4.120.0060.01516.59
7.4.110.0070.01016.59
7.4.100.0140.00716.55
7.4.90.0140.00816.55
7.4.80.0070.01419.39
7.4.70.0120.00916.54
7.4.60.0110.00616.46
7.4.50.0080.00816.58
7.4.40.0030.01216.37
7.4.30.0070.01016.49
7.4.00.0120.00015.05
7.3.330.0000.00813.31
7.3.320.0050.00013.39
7.3.310.0070.00016.43
7.3.300.0070.00016.36
7.3.290.0060.01016.40
7.3.280.0060.00916.42
7.3.270.0100.00617.40
7.3.260.0120.00916.71
7.3.250.0090.01016.36
7.3.240.0070.01016.48
7.3.230.0070.01016.42
7.3.210.0170.01016.64
7.3.200.0030.01916.41
7.3.190.0100.00716.67
7.3.180.0060.00916.52
7.3.170.0000.01716.36
7.3.160.0170.00616.58
7.3.120.0110.00414.85
7.3.110.0070.00714.75
7.3.100.0000.01414.74
7.3.90.0040.01114.88
7.3.80.0030.01014.88
7.3.70.0030.01414.79
7.3.60.0070.01014.96
7.3.50.0100.00714.85
7.3.40.0070.01014.89
7.3.30.0030.01315.06
7.3.20.0090.00616.70
7.3.10.0030.01016.70
7.3.00.0080.00816.73
7.2.330.0160.00616.39
7.2.320.0100.00716.73
7.2.310.0100.01316.71
7.2.300.0060.01016.68
7.2.290.0120.00616.75
7.2.240.0000.01114.95
7.2.230.0040.01114.91
7.2.220.0030.01014.80
7.2.210.0070.01014.94
7.2.200.0060.01114.84
7.2.190.0110.00414.82
7.2.180.0060.00614.88
7.2.170.0070.00414.78
7.2.160.0100.00715.01
7.2.150.0060.00616.84
7.2.140.0060.00616.64
7.2.130.0070.01116.67
7.2.120.0100.00716.78
7.2.110.0000.01316.93
7.2.100.0100.00716.88
7.2.90.0070.01016.83
7.2.80.0070.01016.77
7.2.70.0070.01016.82
7.2.60.0070.00716.67
7.2.50.0100.00716.66
7.2.40.0070.00716.89
7.2.30.0080.00816.94
7.2.20.0070.00717.03
7.2.10.0040.00816.89
7.2.00.0090.00518.06
7.1.330.0060.00315.46
7.1.320.0000.01015.61
7.1.310.0000.01415.68
7.1.300.0100.00615.79
7.1.290.0080.00815.82
7.1.280.0150.00015.87
7.1.270.0080.00415.88
7.1.260.0040.01115.79
7.1.250.0070.00716.01
7.1.200.0030.00615.78
7.1.100.0660.01015.85
7.1.70.0040.00417.25
7.1.60.0110.01419.36
7.1.50.0040.01416.70
7.1.00.0070.07322.45
7.0.200.0000.00916.69
7.0.60.0030.09020.04
7.0.50.0100.05717.86
7.0.40.0100.06720.09
7.0.30.0170.04020.26
7.0.20.0370.07320.31
7.0.10.0130.08320.24
7.0.00.0070.04020.20
5.6.280.0000.03720.93
5.6.210.0100.07720.68
5.6.200.0030.09018.18
5.6.190.0030.07720.57
5.6.180.0530.06720.65
5.6.170.0270.06720.47
5.6.160.0030.04720.52
5.6.150.0070.08018.16
5.6.140.0130.04718.18
5.6.130.0100.07718.28
5.6.120.0100.04721.14
5.6.110.0100.08721.10
5.6.100.0100.05320.98
5.6.90.0030.09321.13
5.6.80.0070.04320.38
5.5.350.0270.07320.43
5.5.340.0170.06317.95
5.5.330.0030.05020.45
5.5.320.0030.04020.25
5.5.310.0230.08020.51
5.5.300.0030.04018.01
5.5.290.0130.07318.04
5.5.280.0130.08020.73
5.5.270.0100.08320.80
5.5.260.0100.06320.80
5.5.250.0100.04020.70
5.5.240.0130.03020.38

preferences:
55.54 ms | 401 KiB | 5 Q