3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class T { static $instanses; final private function __construct(){ } public static function getInstance() { if (!isset(static::$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)
8.3.60.0150.00418.43
8.3.50.0110.01116.48
8.3.40.0040.01118.65
8.3.30.0160.00018.71
8.3.20.0050.00220.15
8.3.10.0080.00023.66
8.3.00.0050.00322.44
8.2.180.0090.01218.37
8.2.170.0040.01122.96
8.2.160.0080.00520.23
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0030.00626.16
8.2.120.0030.00717.38
8.2.110.0000.00919.39
8.2.100.0080.00417.78
8.2.90.0060.00318.03
8.2.80.0030.00518.22
8.2.70.0000.00817.63
8.2.60.0040.00717.63
8.2.50.0080.00017.55
8.2.40.0040.00419.24
8.2.30.0050.00217.74
8.2.20.0040.00417.74
8.2.10.0050.00318.11
8.2.00.0040.00417.96
8.1.280.0100.01025.92
8.1.270.0050.00320.24
8.1.260.0030.00526.35
8.1.250.0080.00028.09
8.1.240.0070.00322.38
8.1.230.0070.00422.77
8.1.220.0040.00417.78
8.1.210.0090.00019.11
8.1.200.0050.00317.35
8.1.190.0040.00417.35
8.1.180.0000.00918.10
8.1.170.0000.00719.07
8.1.160.0040.00418.86
8.1.150.0000.00718.82
8.1.140.0090.00020.52
8.1.130.0050.00317.55
8.1.120.0040.00417.24
8.1.110.0070.00017.36
8.1.100.0000.00817.32
8.1.90.0040.00317.34
8.1.80.0070.00017.42
8.1.70.0000.00717.35
8.1.60.0000.00717.53
8.1.50.0000.00917.38
8.1.40.0040.00417.47
8.1.30.0050.00317.41
8.1.20.0000.00717.65
8.1.10.0040.00417.47
8.1.00.0040.00417.45
8.0.300.0000.00720.03
8.0.290.0040.00416.63
8.0.280.0050.00217.96
8.0.270.0050.00318.00
8.0.260.0030.00317.31
8.0.250.0040.00417.07
8.0.240.0040.00416.93
8.0.230.0040.00316.99
8.0.220.0030.00316.97
8.0.210.0030.00316.86
8.0.200.0060.00017.04
8.0.190.0030.00616.88
8.0.180.0040.00417.00
8.0.170.0040.00416.88
8.0.160.0000.00716.92
8.0.150.0000.00716.89
8.0.140.0000.00716.80
8.0.130.0000.00713.41
8.0.120.0080.00016.91
8.0.110.0020.00516.80
8.0.100.0030.00317.02
8.0.90.0080.00016.81
8.0.80.0090.00616.90
8.0.70.0070.00016.98
8.0.60.0050.00317.06
8.0.50.0020.00516.88
8.0.30.0080.00917.16
8.0.20.0120.00617.40
8.0.10.0030.00517.01
8.0.00.0120.00816.75
7.4.330.0000.00515.08
7.4.320.0060.00016.39
7.4.300.0000.00816.34
7.4.290.0070.00016.36
7.4.280.0080.00016.50
7.4.270.0030.00316.46
7.4.260.0000.00816.52
7.4.250.0080.00016.41
7.4.240.0070.00016.38
7.4.230.0030.00316.56
7.4.220.0060.01616.42
7.4.210.0040.01516.45
7.4.200.0070.00016.51
7.4.160.0040.01116.61
7.4.150.0140.00717.40
7.4.140.0160.00517.86
7.4.130.0140.00816.47
7.4.120.0060.01116.57
7.4.110.0130.00716.64
7.4.100.0160.00316.32
7.4.90.0100.00716.31
7.4.80.0090.00919.39
7.4.70.0100.00616.40
7.4.60.0000.01516.39
7.4.50.0000.00816.11
7.4.40.0070.01416.28
7.4.30.0140.00416.42
7.4.00.0070.00715.07
7.3.330.0030.00313.22
7.3.320.0080.00013.28
7.3.310.0070.00016.24
7.3.300.0000.00716.36
7.3.290.0080.00716.34
7.3.280.0060.01216.34
7.3.270.0040.01917.40
7.3.260.0100.01316.53
7.3.250.0070.01216.47
7.3.240.0150.00616.55
7.3.230.0040.01216.48
7.3.210.0080.00816.42
7.3.200.0100.00719.39
7.3.190.0100.00616.31
7.3.180.0040.01216.48
7.3.170.0120.00516.45
7.3.160.0040.01416.33
7.3.10.0070.00716.73
7.3.00.0030.00916.51
7.2.330.0080.00816.61
7.2.320.0000.01616.55
7.2.310.0170.00516.87
7.2.300.0130.01016.61
7.2.290.0090.00916.39
7.2.130.0090.00616.76
7.2.120.0040.01116.68
7.2.110.0100.00617.04
7.2.100.0030.00716.78
7.2.90.0120.00316.62
7.2.80.0110.00316.84
7.2.70.0000.00917.01
7.2.60.0020.00916.64
7.2.50.0070.01016.68
7.2.40.0090.00916.86
7.2.30.0030.00916.80
7.2.20.0040.01116.38
7.2.10.0120.00316.84
7.2.00.0070.00418.21
7.1.250.0040.01115.66
7.1.200.0040.01115.72
7.1.100.0070.01018.01
7.1.70.0000.01017.13
7.1.60.0080.01520.03
7.1.50.0120.00916.91
7.1.00.0070.07322.37
7.0.200.0490.01014.72
7.0.60.0000.04320.04
7.0.50.0030.04317.73
7.0.40.0030.08020.19
7.0.30.0270.06720.20
7.0.20.0300.08020.09
7.0.10.0100.08320.12
7.0.00.0100.06320.10
5.6.280.0000.07721.09
5.6.210.0030.07720.61
5.6.200.0100.04718.23
5.6.190.0000.09320.33
5.6.180.0200.04020.61
5.6.170.0300.07320.51
5.6.160.0100.07720.61
5.6.150.0070.07018.14
5.6.140.0100.07318.28
5.6.130.0100.08018.20
5.6.120.0030.04320.97
5.6.110.0130.05720.99
5.6.100.0070.03721.00
5.6.90.0030.05021.07
5.6.80.0100.03320.29
5.6.70.0100.08320.42
5.5.350.0100.03320.38
5.5.340.0100.06717.99
5.5.330.0130.06720.35
5.5.320.0300.07320.28
5.5.310.0270.07320.36
5.5.300.0000.04318.08
5.5.290.0100.07318.04
5.5.280.0130.07720.88
5.5.270.0130.07720.68
5.5.260.0030.05720.87
5.5.250.0170.07320.47
5.5.240.0070.04720.37
5.4.450.0000.06719.47
5.4.440.0070.06019.62
5.4.430.0070.05719.58
5.4.420.0430.05319.38
5.4.410.0870.04319.34
5.4.400.0770.04318.98
5.4.390.0670.06319.29
5.4.380.0930.04318.98
5.4.370.0470.05019.15
5.4.360.0100.05319.26
5.4.350.0100.05318.84
5.4.340.0530.06018.98
5.4.320.0730.05319.13
5.4.310.0970.04719.20
5.4.300.0830.05018.98
5.4.290.0770.06019.22
5.4.280.0830.05719.15
5.4.270.0770.04318.98
5.4.260.0800.05719.37
5.4.250.0970.06019.14
5.4.240.0700.05719.01
5.4.230.0700.06019.00
5.4.220.0900.05719.25
5.4.210.0730.05019.02
5.4.200.0670.05317.09
5.4.190.0900.04719.22
5.4.180.0800.06018.96
5.4.170.0730.05319.01
5.4.160.0770.05019.22
5.4.150.0630.06319.24
5.4.140.0730.06316.36
5.4.130.0800.05316.35
5.4.120.0800.05016.39
5.4.110.0800.05316.44
5.4.100.0870.04716.37
5.4.90.0730.06016.53
5.4.80.0800.05016.44
5.4.70.0800.05316.57
5.4.60.0230.03016.52
5.4.50.0070.06716.57
5.4.40.0000.04016.44
5.4.30.0070.03016.32
5.4.20.0070.04016.22

preferences:
63.29 ms | 400 KiB | 5 Q