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($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)
8.3.60.0040.01116.63
8.3.50.0120.00722.08
8.3.40.0090.00618.84
8.3.30.0030.01218.66
8.3.20.0060.00320.34
8.3.10.0040.00423.63
8.3.00.0040.00419.26
8.2.180.0100.01018.16
8.2.170.0000.01522.96
8.2.160.0130.00320.47
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0000.00820.24
8.2.120.0080.00026.35
8.2.110.0060.00320.47
8.2.100.0000.01117.93
8.2.90.0080.00019.09
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0080.00018.16
8.2.50.0030.00518.07
8.2.40.0000.00819.47
8.2.30.0040.00420.59
8.2.20.0000.00817.80
8.2.10.0000.00718.20
8.2.00.0000.00818.14
8.1.280.0150.00425.92
8.1.270.0110.00423.80
8.1.260.0080.00028.09
8.1.250.0050.00328.09
8.1.240.0060.00323.98
8.1.230.0110.00019.09
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0030.00617.35
8.1.190.0000.00817.76
8.1.180.0060.00318.10
8.1.170.0000.00918.35
8.1.160.0000.00721.92
8.1.150.0080.00018.87
8.1.140.0070.00419.52
8.1.130.0000.00717.72
8.1.120.0030.00317.56
8.1.110.0040.00417.38
8.1.100.0000.00817.39
8.1.90.0000.00717.48
8.1.80.0040.00417.37
8.1.70.0030.00517.36
8.1.60.0040.00417.57
8.1.50.0000.00917.51
8.1.40.0040.00417.43
8.1.30.0060.00317.63
8.1.20.0030.00617.57
8.1.10.0000.00817.63
8.1.00.0000.00717.58
8.0.300.0000.00818.77
8.0.290.0040.00416.63
8.0.280.0030.00318.45
8.0.270.0080.00017.34
8.0.260.0000.00717.27
8.0.250.0000.00716.96
8.0.240.0040.00416.96
8.0.230.0070.00016.95
8.0.220.0030.00316.85
8.0.210.0040.00416.90
8.0.200.0030.00316.90
8.0.190.0000.00716.80
8.0.180.0000.00716.81
8.0.170.0050.00216.83
8.0.160.0000.00716.97
8.0.150.0040.00416.72
8.0.140.0040.00416.87
8.0.130.0080.00013.29
8.0.120.0030.00516.77
8.0.110.0040.00416.93
8.0.100.0000.00816.77
8.0.90.0000.00716.95
8.0.80.0060.01316.82
8.0.70.0000.00816.77
8.0.60.0030.00616.79
8.0.50.0000.00716.88
8.0.30.0080.00817.10
8.0.20.0110.00817.43
8.0.10.0000.00817.10
8.0.00.0090.00816.83
7.4.330.0020.00216.84
7.4.320.0070.00016.45
7.4.300.0000.00816.52
7.4.290.0070.00016.54
7.4.280.0070.00016.65
7.4.270.0070.00016.63
7.4.260.0030.00316.52
7.4.250.0000.00716.50
7.4.240.0020.00516.54
7.4.230.0000.00816.62
7.4.220.0060.01316.49
7.4.210.0040.01116.51
7.4.200.0040.00416.55
7.4.160.0040.01216.51
7.4.150.0060.01217.40
7.4.140.0120.00917.86
7.4.130.0090.00716.54
7.4.120.0130.00816.56
7.4.110.0100.00716.73
7.4.100.0130.01016.59
7.4.90.0040.01516.57
7.4.80.0150.00619.39
7.4.70.0040.01516.35
7.4.60.0070.01016.61
7.4.50.0050.00716.45
7.4.40.0050.01016.49
7.4.30.0100.00716.41
7.4.00.0080.00415.04
7.3.330.0060.00013.39
7.3.320.0000.00613.16
7.3.310.0000.00716.27
7.3.300.0030.00316.25
7.3.290.0030.01316.35
7.3.280.0070.00916.40
7.3.270.0030.01617.40
7.3.260.0150.00316.39
7.3.250.0120.00816.39
7.3.240.0050.01216.42
7.3.230.0060.01716.39
7.3.210.0150.00616.40
7.3.200.0030.01716.29
7.3.190.0030.01416.68
7.3.180.0130.00316.46
7.3.170.0120.01116.41
7.3.160.0140.00316.61
7.2.330.0160.02316.82
7.2.320.0110.00616.39
7.2.310.0070.01016.73
7.2.300.0090.00916.57
7.2.290.0120.00916.83
7.2.120.0110.00316.79
7.2.110.0040.00816.33
7.2.100.0100.00316.65
7.2.90.0080.00616.64
7.2.80.0090.00616.64
7.2.70.0030.01316.97
7.2.60.0090.00616.90
7.2.50.0110.00716.66
7.2.40.0070.00716.94
7.2.30.0110.00416.98
7.2.20.0040.00717.04
7.2.10.0120.00616.79
7.2.00.0000.01317.20
7.1.240.0120.00015.82
7.1.230.0000.00915.82
7.1.220.0070.00715.75
7.1.210.0030.01116.06
7.1.200.0040.01215.90
7.1.190.0030.01215.79
7.1.180.0060.00615.98
7.1.170.0030.00615.84
7.1.160.0120.00315.60
7.1.150.0060.01015.88
7.1.140.0030.01015.77
7.1.130.0090.00315.71
7.1.120.0040.00415.80
7.1.110.0060.00916.00
7.1.100.0000.00815.74
7.1.90.0030.00915.93
7.1.80.0120.00015.72
7.1.70.0050.00516.32
7.1.60.0050.01417.61
7.1.50.0060.01116.14
7.1.40.0070.00715.74
7.1.30.0000.00815.81
7.1.20.0030.01015.53
7.1.10.0110.00315.71
7.1.00.0100.03719.12
7.0.320.0040.00715.37
7.0.310.0090.00615.46
7.0.300.0060.00615.45
7.0.290.0040.01215.11
7.0.280.0040.00715.32
7.0.270.0060.00315.11
7.0.260.0090.00315.37
7.0.250.0090.00015.44
7.0.240.0080.00315.49
7.0.230.0100.00015.47
7.0.220.0030.01015.55
7.0.210.0030.00815.32
7.0.200.0020.01015.95
7.0.190.0040.00915.57
7.0.180.0100.00315.35
7.0.170.0070.00715.49
7.0.160.0060.00615.49
7.0.150.0000.00915.55
7.0.140.0090.00615.44
7.0.130.0040.01115.29
7.0.120.0070.00715.33
7.0.110.0060.00615.39
7.0.100.0070.00415.45
7.0.90.0030.01015.54
7.0.80.0060.00915.54
7.0.70.0040.00415.44
7.0.60.0070.02517.58
7.0.50.0050.02616.78
7.0.40.0130.03816.78
7.0.30.0150.02816.77
7.0.20.0150.04216.83
7.0.10.0100.04016.85
7.0.00.0050.03116.71
5.6.380.0160.00014.57
5.6.370.0040.00814.40
5.6.360.0030.00714.71
5.6.350.0070.00314.60
5.6.340.0060.00614.08
5.6.330.0070.00714.38
5.6.320.0070.00714.36
5.6.310.0030.01014.36
5.6.300.0080.00414.45
5.6.290.0000.00714.39
5.6.280.0050.02417.63
5.6.270.0070.00314.39
5.6.260.0030.00714.38
5.6.250.0020.00514.23
5.6.240.0000.01114.54
5.6.230.0030.01214.53
5.6.220.0070.00714.35
5.6.210.0080.04117.46
5.6.200.0080.04416.28
5.6.190.0100.04317.53
5.6.180.0260.03117.44
5.6.170.0130.04717.50
5.6.160.0020.03217.53
5.6.150.0090.04216.51
5.6.140.0030.04516.29
5.6.130.0040.02516.51
5.6.120.0050.02717.63
5.6.110.0060.04717.74
5.6.100.0080.05217.61
5.6.90.0070.04317.72
5.6.80.0090.04517.43
5.6.70.0060.00614.20
5.6.60.0060.00914.38
5.6.50.0040.00414.42
5.6.40.0080.00414.42
5.6.30.0030.00714.39
5.6.20.0040.01114.43
5.6.10.0060.00614.34
5.6.00.0070.00714.20
5.5.380.0030.00311.51
5.5.370.0080.00411.29
5.5.360.0000.01111.27
5.5.350.0120.04315.82
5.5.340.0020.02814.62
5.5.330.0030.02215.89
5.5.320.0040.02115.84
5.5.310.0190.02815.91
5.5.300.0020.02314.78
5.5.290.0020.03714.72
5.5.280.0070.04516.13
5.5.270.0050.04916.08
5.5.260.0050.03716.07
5.5.250.0110.04316.00
5.5.240.0110.03815.81
5.5.230.0060.00611.32
5.5.220.0030.00711.30
5.5.210.0060.00611.27
5.5.200.0040.00711.44
5.5.190.0040.00811.27
5.5.180.0040.00411.27
5.5.170.0060.00614.02
5.5.160.0000.00711.32
5.5.150.0030.00511.27
5.5.140.0040.00811.33
5.5.130.0040.00811.27
5.5.120.0090.00311.27
5.5.110.0030.00711.27
5.5.100.0050.00211.27
5.5.90.0030.00711.41
5.5.80.0060.00311.29
5.5.70.0000.01011.27
5.5.60.0000.00611.27
5.5.50.0060.00011.27
5.5.40.0030.00611.27
5.5.30.0060.00311.27
5.5.20.0030.00311.37
5.5.10.0030.00611.36
5.5.00.0030.00711.27

preferences:
37.38 ms | 401 KiB | 5 Q