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($class_name)])) { class_alias($alias_list[strtolower($class_name)], $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)
8.3.60.0040.01118.28
8.3.50.0130.00722.03
8.3.40.0060.01218.96
8.3.30.0120.00318.79
8.3.20.0040.00420.16
8.3.10.0070.00023.48
8.3.00.0040.00419.38
8.2.180.0170.00318.41
8.2.170.0210.00022.96
8.2.160.0100.00720.52
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0030.00620.52
8.2.120.0080.00026.35
8.2.110.0030.00620.52
8.2.100.0090.00317.93
8.2.90.0000.00819.21
8.2.80.0050.00317.97
8.2.70.0000.00817.75
8.2.60.0030.00618.04
8.2.50.0080.00018.07
8.2.40.0080.00019.47
8.2.30.0070.00020.53
8.2.20.0000.00817.77
8.2.10.0040.00418.20
8.2.00.0000.00818.15
8.1.280.0150.00325.92
8.1.270.0030.00523.91
8.1.260.0030.00528.09
8.1.250.0080.00028.09
8.1.240.0090.00023.59
8.1.230.0070.00319.17
8.1.220.0040.00417.80
8.1.210.0040.00418.77
8.1.200.0030.00617.25
8.1.190.0030.00617.76
8.1.180.0000.00818.10
8.1.170.0030.00518.42
8.1.160.0040.00422.14
8.1.150.0050.00218.81
8.1.140.0080.00219.48
8.1.130.0050.00217.46
8.1.120.0000.00817.45
8.1.110.0040.00417.45
8.1.100.0030.00517.55
8.1.90.0040.00417.47
8.1.80.0050.00317.44
8.1.70.0000.00717.51
8.1.60.0030.00517.69
8.1.50.0040.00417.46
8.1.40.0030.00617.58
8.1.30.0060.00317.59
8.1.20.0020.00517.68
8.1.10.0040.00417.58
8.1.00.0040.00417.56
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00718.54
8.0.270.0000.00716.90
8.0.260.0070.00016.95
8.0.250.0030.00317.10
8.0.240.0040.00417.06
8.0.230.0030.00316.97
8.0.220.0030.00316.96
8.0.210.0070.00016.92
8.0.200.0030.00317.08
8.0.190.0040.00417.02
8.0.180.0040.00416.98
8.0.170.0030.00616.98
8.0.160.0000.00716.94
8.0.150.0040.00416.98
8.0.140.0000.00716.91
8.0.130.0040.00413.44
8.0.120.0000.00716.98
8.0.110.0000.00817.01
8.0.100.0000.00816.93
8.0.90.0070.00016.94
8.0.80.0100.00716.95
8.0.70.0040.00416.96
8.0.60.0040.00417.04
8.0.50.0030.00516.77
8.0.30.0150.00517.10
8.0.20.0100.00817.40
8.0.10.0000.00717.08
8.0.00.0070.01216.67
7.4.330.0000.00516.84
7.4.320.0000.00716.66
7.4.300.0080.00016.61
7.4.290.0070.00016.59
7.4.280.0000.00716.41
7.4.270.0000.00716.60
7.4.260.0030.00316.61
7.4.250.0000.00716.63
7.4.240.0040.00416.58
7.4.230.0020.00516.52
7.4.220.0070.01116.55
7.4.210.0000.01416.42
7.4.200.0030.00516.54
7.4.160.0120.00316.46
7.4.150.0110.00817.40
7.4.140.0120.00917.86
7.4.130.0090.00916.47
7.4.120.0100.00816.62
7.4.110.0120.01216.53
7.4.100.0150.00416.46
7.4.90.0080.00816.45
7.4.80.0070.01019.39
7.4.70.0130.00316.32
7.4.60.0130.00916.40
7.4.50.0040.01116.26
7.4.40.0080.00716.36
7.4.30.0100.00616.45
7.4.00.0030.01315.16
7.3.330.0030.00613.42
7.3.320.0000.00513.37
7.3.310.0030.00316.43
7.3.300.0000.00716.46
7.3.290.0040.01016.45
7.3.280.0110.00516.43
7.3.270.0160.00817.40
7.3.260.0070.01016.42
7.3.250.0110.01116.49
7.3.240.0110.00716.41
7.3.230.0060.01016.43
7.3.210.0150.00716.57
7.3.200.0120.00916.36
7.3.190.0030.01316.41
7.3.180.0030.01316.51
7.3.170.0070.01016.52
7.3.160.0120.00916.58
7.3.120.0100.00714.79
7.3.110.0150.00014.89
7.3.100.0040.00814.76
7.3.90.0040.01514.80
7.3.80.0030.01014.67
7.3.70.0030.01314.68
7.3.60.0100.00314.83
7.3.50.0060.00314.57
7.3.40.0070.00714.73
7.3.30.0150.00314.50
7.3.20.0000.01316.66
7.3.10.0160.00016.68
7.3.00.0060.00916.64
7.2.330.0150.00316.41
7.2.320.0030.01416.65
7.2.310.0070.01016.80
7.2.300.0140.00416.75
7.2.290.0070.01116.43
7.2.240.0090.00914.60
7.2.230.0030.01214.98
7.2.220.0070.00714.95
7.2.210.0060.00314.69
7.2.200.0100.00714.96
7.2.190.0060.00814.88
7.2.180.0070.00714.88
7.2.170.0090.00614.68
7.2.160.0090.00914.68
7.2.150.0040.00817.04
7.2.140.0070.01016.77
7.2.130.0050.00416.63
7.2.120.0080.00416.72
7.2.110.0040.01116.96
7.2.100.0030.00616.65
7.2.90.0080.00417.13
7.2.80.0030.01116.95
7.2.70.0040.00816.99
7.2.60.0070.00817.04
7.2.50.0080.00816.94
7.2.40.0000.01217.09
7.2.30.0040.00916.98
7.2.20.0060.00616.58
7.2.10.0000.01116.89
7.2.00.0070.00818.19
7.1.330.0080.00315.72
7.1.320.0000.00715.52
7.1.310.0030.00915.52
7.1.300.0050.00315.46
7.1.290.0070.01015.69
7.1.280.0150.00015.57
7.1.270.0030.01015.84
7.1.260.0070.00715.84
7.1.250.0080.00515.72
7.1.200.0100.00315.85
7.1.100.0000.00918.16
7.1.70.0040.00816.94
7.1.60.0120.01219.36
7.1.50.0040.01116.70
7.1.00.0100.07022.54
7.0.200.0000.01016.96
7.0.60.0130.07719.91
7.0.50.0070.06317.86
7.0.40.0130.03720.13
7.0.30.0230.04020.09
7.0.20.0330.07020.09
7.0.10.0070.04720.23
7.0.00.0070.06720.08
5.6.280.0030.06020.90
5.6.210.0100.07720.48
5.6.200.0070.06318.15
5.6.190.0030.04720.50
5.6.180.0430.04020.41
5.6.170.0370.06020.50
5.6.160.0070.08320.52
5.6.150.0170.07718.19
5.6.140.0070.05718.19
5.6.130.0070.08018.15
5.6.120.0000.08721.14
5.6.110.0030.08320.99
5.6.100.0100.08321.01
5.6.90.0100.04321.03
5.6.80.0170.07320.39
5.5.350.0070.08020.33
5.5.340.0030.05717.99
5.5.330.0070.04720.28
5.5.320.0070.04020.27
5.5.310.0400.03320.34
5.5.300.0070.03318.08
5.5.290.0070.07018.08
5.5.280.0170.07320.91
5.5.270.0100.08320.77
5.5.260.0130.07720.74
5.5.250.0100.07320.71
5.5.240.0270.06720.17

preferences:
58.97 ms | 401 KiB | 5 Q