3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class T { final private function __construct(){ } public static function getInstance() { if (!isset(static::$instanses)) { static::$instanses = new $this; } return static::$instanses; } } class A extends T { } $t = A::getInstance(); var_dump($t); ?>

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)
8.3.70.0040.01118.43
8.3.60.0070.00718.43
8.3.50.0120.00821.19
8.3.40.0070.00718.97
8.3.30.0000.01518.57
8.3.20.0040.00420.38
8.3.10.0070.00023.61
8.3.00.0070.00022.34
8.2.180.0180.00418.54
8.2.170.0110.00722.96
8.2.160.0150.00320.35
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0070.00317.63
8.2.110.0060.00322.25
8.2.100.0070.00417.75
8.2.90.0040.00419.08
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00817.93
8.2.50.0080.00018.07
8.2.40.0000.00821.20
8.2.30.0050.00319.84
8.2.20.0000.00817.64
8.2.10.0020.00517.94
8.2.00.0040.00417.94
8.1.280.0100.00625.92
8.1.270.0080.00020.03
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00619.21
8.1.230.0090.00617.42
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00717.23
8.1.190.0000.00817.35
8.1.180.0000.00818.10
8.1.170.0000.00818.59
8.1.160.0000.00722.01
8.1.150.0020.00518.83
8.1.140.0060.00317.34
8.1.130.0070.00017.65
8.1.120.0050.00217.48
8.1.110.0040.00417.28
8.1.100.0040.00417.43
8.1.90.0070.00017.30
8.1.80.0000.00717.40
8.1.70.0080.00017.25
8.1.60.0080.00017.46
8.1.50.0030.00617.54
8.1.40.0040.00417.48
8.1.30.0030.00617.41
8.1.20.0040.00417.49
8.1.10.0070.00017.56
8.1.00.0040.00417.43
8.0.300.0040.00418.77
8.0.290.0070.00016.88
8.0.280.0040.00418.34
8.0.270.0000.00716.89
8.0.260.0000.00617.18
8.0.250.0000.00716.98
8.0.240.0070.00017.03
8.0.230.0030.00417.04
8.0.220.0000.00716.97
8.0.210.0000.00816.95
8.0.200.0000.00616.93
8.0.190.0040.00416.92
8.0.180.0050.00316.87
8.0.170.0040.00417.06
8.0.160.0090.00016.86
8.0.150.0000.00716.89
8.0.140.0040.00416.93
8.0.130.0000.00613.43
8.0.120.0040.00416.96
8.0.110.0070.00016.86
8.0.100.0040.00416.96
8.0.90.0000.00716.95
8.0.80.0110.00416.94
8.0.70.0080.00016.96
8.0.60.0040.00416.93
8.0.50.0040.00416.91
8.0.30.0090.01116.95
8.0.20.0100.00717.40
8.0.10.0000.00816.85
8.0.00.0090.00716.90
7.4.330.0000.00515.08
7.4.320.0000.00716.55
7.4.300.0000.00816.37
7.4.290.0080.00016.43
7.4.280.0040.00416.43
7.4.270.0000.00616.50
7.4.260.0000.00716.41
7.4.250.0040.00416.55
7.4.240.0060.00216.47
7.4.230.0000.00716.34
7.4.220.0070.01116.45
7.4.210.0070.01316.59
7.4.200.0000.00716.36
7.4.160.0000.01516.61
7.4.150.0120.00617.40
7.4.140.0120.00917.86
7.4.130.0090.01216.38
7.4.120.0110.00816.56
7.4.110.0090.00916.60
7.4.100.0070.01216.39
7.4.90.0090.00916.52
7.4.80.0110.00719.39
7.4.70.0190.00616.64
7.4.60.0030.01316.66
7.4.50.0000.00816.35
7.4.40.0200.00016.55
7.4.30.0070.01016.51
7.4.00.0070.01214.86
7.3.330.0040.00413.23
7.3.320.0050.00313.34
7.3.310.0000.00716.25
7.3.300.0030.00316.21
7.3.290.0070.00916.32
7.3.280.0100.00916.40
7.3.270.0100.01417.40
7.3.260.0100.01316.62
7.3.250.0100.00916.41
7.3.240.0190.00316.56
7.3.230.0090.00916.41
7.3.210.0120.00616.38
7.3.200.0100.01019.39
7.3.190.0070.01016.61
7.3.180.0080.00916.46
7.3.170.0040.01916.34
7.3.160.0030.01916.38
7.3.120.0100.00614.86
7.3.110.0100.00714.95
7.3.100.0070.00714.86
7.3.90.0000.01414.87
7.3.80.0090.00614.77
7.3.70.0080.00414.48
7.3.60.0040.00414.71
7.3.50.0000.01114.77
7.3.40.0060.00914.53
7.3.30.0040.01114.90
7.3.20.0110.00416.71
7.3.10.0060.00616.60
7.3.00.0040.01116.75
7.2.330.0140.01016.57
7.2.320.0160.00016.44
7.2.310.0040.01216.30
7.2.300.0070.01716.34
7.2.290.0030.01316.38
7.2.250.0090.00915.22
7.2.240.0100.01014.80
7.2.230.0040.00814.92
7.2.220.0090.00615.12
7.2.210.0070.01015.02
7.2.200.0030.00614.95
7.2.190.0030.01314.95
7.2.180.0060.01014.91
7.2.170.0100.00014.97
7.2.60.0030.00516.83
7.2.00.0050.00519.62
7.1.330.0030.01015.73
7.1.320.0040.01115.70
7.1.310.0090.00615.57
7.1.300.0060.00615.71
7.1.290.0000.01215.69
7.1.280.0080.00415.86
7.1.270.0040.00715.42
7.1.260.0040.00415.74
7.1.200.0070.00415.88
7.1.100.0070.00717.98
7.1.70.0000.01117.09
7.1.60.0130.01320.03
7.1.50.0160.00616.90
7.1.00.0030.07722.28
7.0.200.0000.00816.46
7.0.60.0000.06319.88
7.0.50.0070.04317.73
7.0.40.0100.04020.10
7.0.30.0200.04020.26
7.0.20.0230.04320.33
7.0.10.0330.05720.21
7.0.00.0030.04320.07
5.6.280.0070.06020.99
5.6.210.0100.05720.73
5.6.200.0030.04318.18
5.6.190.0100.03720.64
5.6.180.0270.04320.64
5.6.170.0270.07720.41
5.6.160.0030.07320.62
5.6.150.0070.08318.18
5.6.140.0030.08318.27
5.6.130.0130.08018.28
5.6.120.0030.07721.13
5.6.110.0070.07720.97
5.6.100.0130.07720.98
5.6.90.0100.07721.00
5.6.80.0000.04020.41
5.6.70.0370.06020.37
5.5.350.0030.08320.38
5.5.340.0070.08017.97
5.5.330.0130.06320.21
5.5.320.0230.06320.34
5.5.310.0370.06020.41
5.5.300.0170.04317.96
5.5.290.0100.03717.95
5.5.280.0100.06020.89
5.5.270.0070.06320.88
5.5.260.0130.05020.80
5.5.250.0030.04020.69
5.5.240.0030.08320.36
5.4.450.0930.06719.39
5.4.440.0970.07319.21
5.4.430.0470.09319.45
5.4.420.0070.06719.47
5.4.410.0100.07319.18
5.4.400.0500.05718.98
5.4.390.0800.05019.22
5.4.380.0900.06019.16
5.4.370.0800.06018.88
5.4.360.1000.06719.25
5.4.350.0930.05319.25
5.4.340.0900.05319.25
5.4.320.0770.06018.84
5.4.310.0830.07019.02
5.4.300.0970.04019.28
5.4.290.0830.05719.25
5.4.280.0730.07319.05
5.4.270.0630.05019.20
5.4.260.0100.05019.15
5.4.250.0130.05019.30
5.4.240.0500.05018.97
5.4.230.0730.06319.00
5.4.220.0930.04319.27
5.4.210.0800.05319.23
5.4.200.0730.06316.83
5.4.190.0830.04318.91
5.4.180.0830.05019.06
5.4.170.0800.06019.32
5.4.160.0970.05018.91
5.4.150.0700.05719.31
5.4.140.0930.04716.36
5.4.130.1000.04316.44
5.4.120.0770.05316.58
5.4.110.0870.05016.59
5.4.100.1000.05316.36
5.4.90.0870.04316.58
5.4.80.0730.05716.73
5.4.70.0770.05316.57
5.4.60.0000.07016.43
5.4.50.0030.08016.17
5.4.40.0100.04316.42
5.4.30.0270.06016.55
5.4.20.0300.07716.52

preferences:
44.13 ms | 401 KiB | 5 Q