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($class_name)])) { var_dump($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)
8.3.60.0100.01016.75
8.3.50.0110.01122.05
8.3.40.0120.00318.61
8.3.30.0090.00618.83
8.3.20.0040.00420.21
8.3.10.0040.00423.66
8.3.00.0030.00519.38
8.2.180.0140.00718.38
8.2.170.0070.00722.96
8.2.160.0100.00320.43
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00920.39
8.2.120.0040.00426.35
8.2.110.0070.01719.25
8.2.100.0030.00817.84
8.2.90.0060.00318.16
8.2.80.0050.00317.97
8.2.70.0040.00418.03
8.2.60.0040.00418.05
8.2.50.0090.00018.10
8.2.40.0000.00720.50
8.2.30.0030.00320.52
8.2.20.0000.00817.84
8.2.10.0030.00518.18
8.2.00.0080.00018.10
8.1.280.0100.01025.92
8.1.270.0030.00623.83
8.1.260.0070.00028.09
8.1.250.0080.00028.09
8.1.240.0060.00322.46
8.1.230.0040.00820.98
8.1.220.0000.00817.77
8.1.210.0040.00418.88
8.1.200.0040.00717.38
8.1.190.0030.00617.35
8.1.180.0080.00018.10
8.1.170.0060.00618.64
8.1.160.0000.00722.05
8.1.150.0070.00018.87
8.1.140.0030.00619.53
8.1.130.0030.00317.77
8.1.120.0000.00717.40
8.1.110.0040.00417.48
8.1.100.0030.00617.40
8.1.90.0040.00417.52
8.1.80.0030.00617.37
8.1.70.0030.00317.49
8.1.60.0000.00917.65
8.1.50.0040.00417.45
8.1.40.0040.00417.40
8.1.30.0000.00917.55
8.1.20.0050.00317.66
8.1.10.0000.00817.65
8.1.00.0040.00417.54
8.0.300.0070.00020.03
8.0.290.0040.00416.75
8.0.280.0040.00418.43
8.0.270.0050.00217.20
8.0.260.0000.00717.27
8.0.250.0030.00316.91
8.0.240.0000.00717.01
8.0.230.0030.00316.93
8.0.220.0040.00416.99
8.0.210.0070.00016.94
8.0.200.0040.00416.95
8.0.190.0050.00317.09
8.0.180.0070.00017.05
8.0.170.0000.00817.02
8.0.160.0040.00417.00
8.0.150.0040.00416.84
8.0.140.0050.00316.92
8.0.130.0030.00613.36
8.0.120.0000.00816.90
8.0.110.0000.00716.81
8.0.100.0080.00016.97
8.0.90.0070.00016.86
8.0.80.0070.01416.95
8.0.70.0000.00716.88
8.0.60.0040.00416.90
8.0.50.0040.00417.04
8.0.30.0130.00716.87
8.0.20.0090.01317.40
8.0.10.0070.00016.91
8.0.00.0120.00816.80
7.4.330.0020.00216.89
7.4.320.0070.00016.57
7.4.300.0030.00316.55
7.4.290.0000.00716.60
7.4.280.0070.00016.62
7.4.270.0050.00216.60
7.4.260.0030.00316.61
7.4.250.0000.00716.44
7.4.240.0050.00316.63
7.4.230.0000.00816.71
7.4.220.0110.00716.65
7.4.210.0060.00816.48
7.4.200.0000.00716.41
7.4.160.0120.00316.52
7.4.150.0170.00017.40
7.4.140.0180.00417.86
7.4.130.0110.00716.63
7.4.120.0050.01316.72
7.4.110.0120.00616.54
7.4.100.0080.01316.71
7.4.90.0030.02016.49
7.4.80.0110.01219.39
7.4.70.0100.01016.52
7.4.60.0100.00716.38
7.4.50.0040.01116.46
7.4.40.0090.00916.43
7.4.30.0060.01116.26
7.4.10.0070.00715.17
7.4.00.0060.01115.06
7.3.330.0060.00313.44
7.3.320.0030.00313.28
7.3.310.0030.00316.48
7.3.300.0000.00716.46
7.3.290.0100.00816.44
7.3.280.0080.00916.45
7.3.270.0120.00617.40
7.3.260.0090.00916.63
7.3.250.0090.01016.51
7.3.240.0090.00916.55
7.3.230.0030.01716.44
7.3.210.0160.00716.66
7.3.200.0090.01416.39
7.3.190.0100.00616.38
7.3.180.0120.00616.67
7.3.170.0070.01016.57
7.3.160.0030.01316.38
7.3.130.0120.00615.01
7.3.120.0110.00715.10
7.3.110.0000.01715.17
7.3.100.0030.01514.96
7.3.90.0030.01314.87
7.3.80.0060.00614.79
7.3.70.0000.00914.75
7.3.60.0030.01014.75
7.3.50.0040.00815.11
7.3.40.0000.01314.93
7.3.30.0070.00315.01
7.3.20.0040.01116.77
7.3.10.0030.01016.88
7.3.00.0060.00916.83
7.2.330.0180.00716.77
7.2.320.0060.01016.44
7.2.310.0040.01316.39
7.2.300.0090.00916.73
7.2.290.0060.01616.80
7.2.260.0130.00314.59
7.2.250.0040.01415.00
7.2.240.0130.00315.03
7.2.230.0070.00714.67
7.2.220.0060.01215.16
7.2.210.0000.01415.11
7.2.200.0040.00914.87
7.2.190.0030.01015.12
7.2.180.0000.01214.89
7.2.170.0030.01215.12
7.2.160.0050.00615.02
7.2.150.0110.00416.92
7.2.140.0090.00616.96
7.2.130.0130.00316.86
7.2.120.0000.01417.01
7.2.110.0070.00716.71
7.2.100.0040.00416.86
7.2.90.0090.00616.90
7.2.80.0030.00616.94
7.2.70.0030.00717.12
7.2.60.0020.01116.86
7.2.50.0060.00617.06
7.2.40.0090.00017.01
7.2.30.0080.01116.82
7.2.20.0090.00916.95
7.2.10.0000.01216.91
7.2.00.0050.01118.14
7.1.330.0070.00715.73
7.1.320.0060.01215.95
7.1.310.0030.01015.74
7.1.300.0040.01215.76
7.1.290.0060.00615.60
7.1.280.0060.01015.77
7.1.270.0060.00615.66
7.1.260.0040.01115.82
7.1.250.0000.01215.57
7.1.240.0040.00715.83
7.1.230.0030.00615.93
7.1.220.0000.01315.82
7.1.210.0140.00015.54
7.1.200.0020.00815.81
7.1.190.0060.00615.93
7.1.180.0040.00415.79
7.1.170.0070.00715.79
7.1.160.0040.00815.92
7.1.150.0070.00715.96
7.1.140.0000.01715.93
7.1.130.0030.01215.89
7.1.120.0040.01415.99
7.1.110.0120.00315.66
7.1.100.0030.01216.96
7.1.90.0090.00615.75
7.1.80.0040.01415.82
7.1.70.0080.00316.26
7.1.60.0050.01117.63
7.1.50.0080.00516.55
7.1.40.0140.00015.50
7.1.30.0000.01415.65
7.1.20.0100.00315.85
7.1.10.0100.00615.84
7.1.00.0020.04519.01
7.0.330.0060.00615.55
7.0.320.0030.00915.49
7.0.310.0030.01015.21
7.0.300.0040.00415.50
7.0.290.0040.01115.39
7.0.280.0070.01115.43
7.0.270.0040.00915.42
7.0.260.0120.00615.43
7.0.250.0110.00715.46
7.0.240.0110.00415.46
7.0.230.0030.01415.59
7.0.220.0110.00315.36
7.0.210.0000.00915.32
7.0.200.0020.00716.06
7.0.190.0030.01015.49
7.0.180.0110.00415.53
7.0.170.0060.00615.42
7.0.160.0000.01215.56
7.0.150.0040.00815.50
7.0.140.0030.01015.32
7.0.130.0100.00315.57
7.0.120.0100.00315.48
7.0.110.0100.00415.23
7.0.100.0030.01015.57
7.0.90.0000.01215.55
7.0.80.0030.01015.52
7.0.70.0030.00915.41
7.0.60.0100.04017.79
7.0.50.0050.04616.57
7.0.40.0050.02816.91
7.0.30.0130.02516.89
7.0.20.0160.04716.77
7.0.10.0060.04416.69
7.0.00.0040.04616.84
5.6.400.0040.00714.40
5.6.390.0070.00314.73
5.6.380.0000.01214.66
5.6.370.0100.00314.75
5.6.360.0030.00514.74
5.6.350.0130.00314.85
5.6.340.0070.01014.54
5.6.330.0040.01614.57
5.6.320.0060.01014.25
5.6.310.0000.01114.36
5.6.300.0040.00714.33
5.6.290.0080.00614.63
5.6.280.0040.02317.51
5.6.270.0060.01214.38
5.6.260.0030.01014.55
5.6.250.0000.01114.39
5.6.240.0040.01114.53
5.6.230.0080.00614.47
5.6.220.0070.01114.39
5.6.210.0070.03317.79
5.6.200.0060.02516.16
5.6.190.0080.03017.63
5.6.180.0230.04217.50
5.6.170.0170.02517.53
5.6.160.0110.02417.62
5.6.150.0130.02316.26
5.6.140.0050.04516.31
5.6.130.0060.03016.38
5.6.120.0050.03817.74
5.6.110.0070.04017.77
5.6.100.0080.04517.74
5.6.90.0060.02917.79
5.6.80.0030.03817.39
5.6.70.0100.00714.53
5.6.60.0000.01514.29
5.6.50.0090.00414.55
5.6.40.0030.01314.38
5.6.30.0070.00314.18
5.6.20.0050.00514.05
5.6.10.0060.00614.70
5.6.00.0030.01014.44
5.5.380.0030.01014.48
5.5.370.0120.00314.52
5.5.360.0070.00714.20
5.5.350.0150.03717.30
5.5.340.0130.03516.11
5.5.330.0110.02017.51
5.5.320.0050.02317.36
5.5.310.0210.03517.40
5.5.300.0050.02316.23
5.5.290.0030.04816.13
5.5.280.0110.04317.50
5.5.270.0100.03317.48
5.5.260.0110.04317.59
5.5.250.0090.02917.53
5.5.240.0180.03817.21
5.5.230.0040.01114.09
5.5.220.0060.00614.30
5.5.210.0090.00614.45
5.5.200.0030.01014.64
5.5.190.0060.00614.48
5.5.180.0070.00314.36
5.5.170.0000.01414.36
5.5.160.0000.01314.32
5.5.150.0110.00014.37
5.5.140.0070.01013.98
5.5.130.0040.01214.40
5.5.120.0120.00414.29
5.5.110.0000.01014.20
5.5.100.0030.00614.39
5.5.90.0060.00314.28
5.5.80.0030.00914.20
5.5.70.0030.00614.18
5.5.60.0030.00914.34
5.5.50.0090.00314.19
5.5.40.0110.00414.36
5.5.30.0000.01314.45
5.5.20.0040.01114.36
5.5.10.0090.00614.47
5.5.00.0070.00414.44

preferences:
68.86 ms | 401 KiB | 5 Q