3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function getAssignedVariable() { $hash = function($object) { return spl_object_hash($object); }; $self = $hash($this); foreach ($GLOBALS as $key => $value) { if ($value instanceof Foo && $self == $hash($value)) { return $key; } } } } $a = new Foo; $b = new Foo; echo '$' . $a->getAssignedVariable(), PHP_EOL; // $a echo '$' . $b->getAssignedVariable(), PHP_EOL; // $b

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)
8.3.60.0040.01518.28
8.3.50.0170.00221.97
8.3.40.0120.00618.66
8.3.30.0210.00018.81
8.3.20.0080.00018.68
8.3.10.0070.00019.13
8.3.00.0040.00423.65
8.2.180.0140.00016.63
8.2.170.0100.00722.96
8.2.160.0120.00320.52
8.2.150.0090.00924.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0070.00019.54
8.2.110.0070.00320.38
8.2.100.0030.00917.91
8.2.90.0000.00819.08
8.2.80.0030.00518.04
8.2.70.0070.00417.50
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0080.00018.14
8.2.30.0040.00421.09
8.2.20.0040.00417.59
8.2.10.0000.00817.66
8.2.00.0050.00217.70
8.1.280.0100.00725.92
8.1.270.0040.00423.99
8.1.260.0100.00726.35
8.1.250.0040.00428.09
8.1.240.0080.00322.59
8.1.230.0030.00920.85
8.1.220.0040.00418.77
8.1.210.0040.00418.92
8.1.200.0040.00417.35
8.1.190.0040.00417.40
8.1.180.0000.00918.10
8.1.170.0040.00418.48
8.1.160.0030.00518.84
8.1.150.0040.00418.61
8.1.140.0070.00017.42
8.1.130.0000.00717.80
8.1.120.0000.00717.47
8.1.110.0060.00317.41
8.1.100.0040.00417.36
8.1.90.0000.00817.44
8.1.80.0080.00017.30
8.1.70.0000.00717.46
8.1.60.0060.00317.58
8.1.50.0000.00717.50
8.1.40.0000.01017.52
8.1.30.0060.00317.70
8.1.20.0040.00417.68
8.1.10.0000.00717.62
8.1.00.0030.00617.52
8.0.300.0050.00220.02
8.0.290.0030.00317.16
8.0.280.0030.00318.45
8.0.270.0040.00417.19
8.0.260.0030.00316.84
8.0.250.0050.00316.90
8.0.240.0100.00016.85
8.0.230.0030.00316.92
8.0.220.0030.00616.80
8.0.210.0000.00716.88
8.0.200.0030.00317.00
8.0.190.0030.00616.95
8.0.180.0040.00416.75
8.0.170.0000.00716.95
8.0.160.0080.00016.88
8.0.150.0050.00516.79
8.0.140.0040.00416.74
8.0.130.0060.00013.33
8.0.120.0000.00716.88
8.0.110.0070.00016.85
8.0.100.0000.00717.01
8.0.90.0070.00017.02
8.0.80.0100.00316.94
8.0.70.0040.00416.91
8.0.60.0000.00716.77
8.0.50.0080.00016.95
8.0.30.0100.01417.20
8.0.20.0120.01117.40
8.0.10.0040.00416.92
8.0.00.0080.01116.73
7.4.330.0060.00014.79
7.4.320.0030.00316.52
7.4.300.0070.00016.55
7.4.290.0040.00416.61
7.4.280.0030.00316.57
7.4.270.0030.00316.41
7.4.260.0000.00513.34
7.4.250.0040.00416.50
7.4.240.0030.00316.58
7.4.230.0000.00716.44
7.4.220.0070.01416.60
7.4.210.0050.01116.58
7.4.200.0000.00716.54
7.4.190.0000.00716.70
7.4.160.0130.00316.48
7.4.150.0080.00917.40
7.4.140.0100.00717.86
7.4.130.0070.01116.46
7.4.120.0100.00716.49
7.4.110.0120.00416.78
7.4.100.0080.01616.67
7.4.90.0100.00716.29
7.4.80.0080.00819.39
7.4.70.0100.00716.44
7.4.60.0060.01216.35
7.4.50.0050.00316.41
7.4.40.0030.01022.52
7.4.30.0060.01216.66
7.4.10.0070.01314.78
7.4.00.0090.00914.91
7.3.330.0060.00013.37
7.3.320.0000.00513.34
7.3.310.0030.00316.46
7.3.300.0030.00416.21
7.3.290.0110.00316.31
7.3.280.0070.01016.37
7.3.270.0120.00617.40
7.3.260.0130.01018.24
7.3.250.0050.01116.34
7.3.240.0090.00616.37
7.3.230.0130.00416.39
7.3.210.0030.01516.48
7.3.200.0150.00619.39
7.3.190.0090.00616.45
7.3.180.0060.00916.64
7.3.170.0030.01416.73
7.3.160.0000.01616.52
7.3.130.0070.01114.65
7.3.120.0140.00314.78
7.3.110.0070.00914.69
7.3.100.0070.00914.80
7.3.90.0030.01214.93
7.3.80.0060.01114.61
7.3.70.0040.00914.68
7.3.60.0070.00814.82
7.3.50.0050.00914.93
7.3.40.0020.01514.63
7.3.30.0080.00614.56
7.3.20.0060.00716.75
7.3.10.0040.00716.71
7.3.00.0080.00516.75
7.2.330.0140.00316.79
7.2.320.0070.01416.56
7.2.310.0150.00916.82
7.2.300.0130.00416.78
7.2.290.0060.01216.84
7.2.260.0030.01715.12
7.2.250.0130.00714.90
7.2.240.0060.00915.18
7.2.230.0050.01315.07
7.2.220.0090.00915.05
7.2.210.0030.01414.74
7.2.200.0030.00815.03
7.2.190.0100.00515.18
7.2.180.0060.00415.10
7.2.170.0040.01115.18
7.2.160.0050.01015.17
7.2.150.0050.00917.01
7.2.140.0030.01016.96
7.2.130.0080.00717.01
7.2.120.0090.00516.85
7.2.110.0040.00917.02
7.2.100.0050.01016.97
7.2.90.0070.00717.05
7.2.80.0070.00617.05
7.2.70.0030.01217.01
7.2.60.0060.00716.93
7.2.50.0030.00917.01
7.2.40.0050.00817.03
7.2.30.0030.00916.92
7.2.20.0020.01217.13
7.2.10.0060.00916.99
7.2.00.0060.00817.81
7.1.330.0060.01015.89
7.1.320.0070.00915.61
7.1.310.0040.01115.80
7.1.300.0080.00715.70
7.1.290.0050.00515.70
7.1.280.0050.00915.75
7.1.270.0020.01115.78
7.1.260.0030.00815.80
7.1.250.0030.01115.84
7.1.240.0090.00315.84
7.1.230.0040.00715.79
7.1.220.0030.01315.82
7.1.210.0000.00915.55
7.1.200.0060.00515.88
7.1.190.0030.01116.01
7.1.180.0030.00615.52
7.1.170.0040.01115.53
7.1.160.0060.00915.70
7.1.150.0040.01015.61
7.1.140.0080.00815.62
7.1.130.0060.00315.76
7.1.120.0050.00515.79
7.1.110.0070.00715.96
7.1.100.0040.01116.98
7.1.90.0100.00315.71
7.1.80.0090.00315.61
7.1.70.0050.00816.45
7.1.60.0080.01117.67
7.1.50.0030.01216.25
7.1.40.0060.00915.86
7.1.30.0070.00715.87
7.1.20.0030.01015.48
7.1.10.0040.00915.86
7.1.00.0020.03618.91
7.0.330.0030.01215.12
7.0.320.0070.00715.24
7.0.310.0090.00015.21
7.0.300.0110.00415.38
7.0.290.0140.00015.38
7.0.280.0090.00315.53
7.0.270.0090.00615.46
7.0.260.0030.00715.48
7.0.250.0000.01315.23
7.0.240.0070.01015.17
7.0.230.0070.00715.35
7.0.220.0060.00315.18
7.0.210.0030.00615.23
7.0.200.0020.00715.88
7.0.190.0100.00315.20
7.0.180.0060.01015.34
7.0.170.0080.00015.28
7.0.160.0060.00615.20
7.0.150.0050.00315.55
7.0.140.0060.03818.80
7.0.130.0030.01115.20
7.0.120.0100.00415.49
7.0.110.0110.00315.47
7.0.100.0090.00315.50
7.0.90.0070.00615.51
7.0.80.0030.03017.74
7.0.70.0090.03517.79
7.0.60.0100.01517.60
7.0.50.0080.02417.99
7.0.40.0060.04016.88
7.0.30.0030.02616.76
7.0.20.0070.03016.77
7.0.10.0000.02816.86
7.0.00.0030.02016.84
5.6.400.0060.01014.45
5.6.390.0000.01414.66
5.6.380.0070.00713.83
5.6.370.0080.00414.60
5.6.360.0090.00314.79
5.6.350.0030.00814.47
5.6.340.0030.00914.31
5.6.330.0030.01014.11
5.6.320.0000.01214.46
5.6.310.0120.00314.35
5.6.300.0060.00814.09
5.6.290.0000.01414.40
5.6.280.0020.04417.55
5.6.270.0030.01414.25
5.6.260.0060.00914.44
5.6.250.0030.00914.23
5.6.240.0060.01214.41
5.6.230.0050.02617.70
5.6.220.0050.04217.38
5.6.210.0000.03917.49
5.6.200.0020.03317.76
5.6.190.0030.03317.60
5.6.180.0070.04217.80
5.6.170.0060.02217.55
5.6.160.0030.02517.65
5.6.150.0040.02017.71
5.6.140.0030.02317.56
5.6.130.0070.02517.70
5.6.120.0050.02317.59
5.6.110.0050.02017.88
5.6.100.0080.02217.56
5.6.90.0070.02417.61
5.6.80.0050.02217.22
5.6.70.0030.02517.32
5.6.60.0030.02517.43
5.6.50.0070.02517.35
5.6.40.0080.02317.38
5.6.30.0020.02217.26
5.6.20.0110.01317.37
5.6.10.0060.02117.29
5.6.00.0040.04417.29
5.5.380.0130.00314.00
5.5.370.0030.05017.32
5.5.360.0040.02617.44
5.5.350.0040.02617.28
5.5.340.0080.04217.58
5.5.330.0020.02717.59
5.5.320.0040.02717.49
5.5.310.0070.02217.77
5.5.300.0030.02217.70
5.5.290.0050.02517.62
5.5.280.0050.02517.58
5.5.270.0040.02617.63
5.5.260.0020.02117.75
5.5.250.0020.02517.50
5.5.240.0030.02517.17
5.5.230.0020.02217.36
5.5.220.0060.02017.30
5.5.210.0060.02317.35
5.5.200.0020.02617.31
5.5.190.0050.01817.27
5.5.180.0030.02017.11
5.5.170.0060.01114.11
5.5.160.0080.03317.13
5.5.150.0020.03717.18
5.5.140.0070.02617.01
5.5.130.0040.02317.27
5.5.120.0080.04117.26
5.5.110.0070.02117.21
5.5.100.0050.04417.13
5.5.90.0080.03617.21
5.5.80.0070.04517.24
5.5.70.0040.04417.18
5.5.60.0040.04416.94
5.5.50.0060.03317.26
5.5.40.0060.02416.97
5.5.30.0100.03016.97
5.5.20.0100.03717.18
5.5.10.0050.02217.14
5.5.00.0070.02217.21
5.4.450.0050.02016.00
5.4.440.0010.02616.10
5.4.430.0030.02016.10
5.4.420.0050.01916.06
5.4.410.0030.02116.04
5.4.400.0030.01915.96
5.4.390.0030.02515.98
5.4.380.0090.02015.90
5.4.370.0030.02315.96
5.4.360.0030.02215.90
5.4.350.0070.02215.84
5.4.340.0060.02015.97
5.4.330.0060.00612.76
5.4.320.0030.02115.89
5.4.310.0100.01715.99
5.4.300.0040.03915.94
5.4.290.0070.04015.95
5.4.280.0050.03215.89
5.4.270.0030.02615.99
5.4.260.0020.02315.95
5.4.250.0050.04915.85
5.4.240.0070.04015.89
5.4.230.0080.03615.92
5.4.220.0070.04115.96
5.4.210.0030.04515.97
5.4.200.0070.03815.81
5.4.190.0080.03815.92
5.4.180.0030.02015.96
5.4.170.0080.02015.99
5.4.160.0040.02415.89
5.4.150.0050.04415.93
5.4.140.0030.03514.61
5.4.130.0070.03814.60
5.4.120.0030.03514.59
5.4.110.0000.02914.55
5.4.100.0060.03314.58
5.4.90.0000.04414.66
5.4.80.0000.02414.63
5.4.70.0000.02414.65
5.4.60.0070.03314.54
5.4.50.0050.03214.57
5.4.40.0030.03814.63
5.4.30.0070.03214.62
5.4.20.0050.01714.60
5.4.10.0020.02414.54
5.4.00.0050.03514.24
5.3.290.0020.02713.73
5.3.280.0070.04113.70
5.3.270.0030.02013.75
5.3.260.0050.02213.65
5.3.250.0050.02213.69
5.3.240.0080.03713.65
5.3.230.0030.02513.67
5.3.220.0110.03613.67
5.3.210.0040.03613.66
5.3.200.0060.04113.70
5.3.190.0020.02513.67
5.3.180.0020.02613.63
5.3.170.0030.02213.69
5.3.160.0000.01913.73
5.3.150.0090.02613.70
5.3.140.0040.04413.64
5.3.130.0030.02813.62
5.3.120.0070.03013.64
5.3.110.0030.02513.65
5.3.100.0080.03713.39
5.3.90.0030.03913.38
5.3.80.0030.02513.46
5.3.70.0070.02213.37
5.3.60.0020.03313.43
5.3.50.0100.01513.39
5.3.40.0030.02713.35
5.3.30.0050.03413.30
5.3.20.0050.03813.29
5.3.10.0070.03413.24
5.3.00.0050.03713.25
5.2.170.0030.06313.45
5.2.160.0030.02313.45
5.2.150.0030.05013.45
5.2.140.0030.02313.45
5.2.130.0000.02713.45
5.2.120.0030.05313.45
5.2.110.0070.05313.45
5.2.100.0030.06313.45
5.2.90.0000.06313.45
5.2.80.0070.03313.45
5.2.70.0000.06013.45
5.2.60.0000.06013.45
5.2.50.0100.04313.45
5.2.40.0030.06013.45
5.2.30.0030.04313.45
5.2.20.0070.04313.45
5.2.10.0000.05013.45
5.2.00.0070.05713.45
5.1.60.0030.03313.45
5.1.50.0070.05313.45
5.1.40.0030.04713.45
5.1.30.0030.03013.45
5.1.20.0000.03713.45
5.1.10.0000.02713.45
5.1.00.0000.02713.45
5.0.50.0030.02013.45
5.0.40.0070.02013.45
5.0.30.0000.03313.45
5.0.20.0000.04713.45
5.0.10.0030.05313.45
5.0.00.0000.03313.45
4.4.90.0030.02013.45
4.4.80.0070.03313.45
4.4.70.0000.02713.45
4.4.60.0000.02313.45
4.4.50.0070.03013.45
4.4.40.0030.02313.45
4.4.30.0030.03313.45
4.4.20.0030.01313.45
4.4.10.0030.03313.45
4.4.00.0000.02713.45
4.3.110.0030.02013.45
4.3.100.0030.02013.45
4.3.90.0000.02313.45
4.3.80.0030.02313.45
4.3.70.0000.02313.45
4.3.60.0000.02713.45
4.3.50.0070.03313.45
4.3.40.0000.04013.45
4.3.30.0030.01313.45
4.3.20.0000.01713.45
4.3.10.0030.01313.45
4.3.00.0030.02713.45

preferences:
50.18 ms | 401 KiB | 5 Q