3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class T { static public $instanses; final private function __construct(){ } public static function getInstance() { var_dump(static::$instanses); if (!(static::$instanses instanceof static)) { static::$instanses = new static; } var_dump(static::$instanses); return static::$instanses; } } class A extends T { static public $instanses; } class B extends A { static public $instanses; } $t = A::getInstance(); var_dump($t); $t1 = B::getInstance(); var_dump($t1); new 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)
8.3.60.0160.00316.63
8.3.50.0120.00316.37
8.3.40.0070.01118.79
8.3.30.0140.00718.79
8.3.20.0080.00020.34
8.3.10.0030.00523.74
8.3.00.0060.00318.04
8.2.180.0100.01016.75
8.2.170.0100.00722.96
8.2.160.0070.01120.52
8.2.150.0090.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00417.63
8.2.110.0030.00622.26
8.2.100.0110.00017.63
8.2.90.0060.00319.09
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0040.00419.39
8.2.30.0040.00418.12
8.2.20.0000.00817.66
8.2.10.0000.00718.00
8.2.00.0070.00018.11
8.1.280.0070.00725.92
8.1.270.0110.00720.20
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0030.00622.32
8.1.230.0120.00017.42
8.1.220.0040.00717.74
8.1.210.0080.00018.77
8.1.200.0000.00917.48
8.1.190.0000.00817.36
8.1.180.0030.00518.10
8.1.170.0000.00818.49
8.1.160.0070.00021.98
8.1.150.0060.00318.92
8.1.140.0040.00417.44
8.1.130.0020.00517.63
8.1.120.0070.00017.38
8.1.110.0040.00417.48
8.1.100.0000.00717.36
8.1.90.0030.00517.50
8.1.80.0030.00517.47
8.1.70.0070.00017.34
8.1.60.0040.00417.56
8.1.50.0030.00617.53
8.1.40.0000.00817.48
8.1.30.0040.00417.61
8.1.20.0000.00717.70
8.1.10.0020.00517.54
8.1.00.0040.00417.55
8.0.300.0030.00618.77
8.0.290.0040.00416.75
8.0.280.0040.00318.33
8.0.270.0030.00317.14
8.0.260.0060.00017.32
8.0.250.0040.00416.93
8.0.240.0070.00316.98
8.0.230.0050.00516.98
8.0.220.0040.00416.93
8.0.210.0030.00317.00
8.0.200.0070.00316.91
8.0.190.0040.00417.03
8.0.180.0070.00016.87
8.0.170.0030.00516.97
8.0.160.0040.00416.96
8.0.150.0000.00717.00
8.0.140.0100.00016.84
8.0.130.0000.00513.41
8.0.120.0000.00816.89
8.0.110.0040.00416.90
8.0.100.0000.00717.02
8.0.90.0050.00216.95
8.0.80.0110.00716.93
8.0.70.0000.00816.77
8.0.60.0040.00416.81
8.0.50.0040.00416.88
8.0.30.0100.01016.86
8.0.20.0100.01317.40
8.0.10.0000.00717.15
8.0.00.0100.00716.75
7.4.330.0000.00615.08
7.4.320.0040.00416.44
7.4.300.0000.00816.56
7.4.290.0050.00616.57
7.4.280.0070.00016.55
7.4.270.0030.00316.37
7.4.260.0040.00416.52
7.4.250.0000.00716.46
7.4.240.0080.00016.51
7.4.230.0050.00316.69
7.4.220.0120.00616.61
7.4.210.0120.00316.63
7.4.200.0070.00016.61
7.4.160.0030.01216.43
7.4.150.0060.01317.40
7.4.140.0050.02017.86
7.4.130.0120.00516.63
7.4.120.0090.01016.52
7.4.110.0110.00816.66
7.4.100.0190.00516.56
7.4.90.0020.01716.54
7.4.80.0170.00319.39
7.4.70.0080.00816.48
7.4.60.0070.01016.48
7.4.50.0040.00416.54
7.4.40.0090.00916.55
7.4.30.0110.00616.41
7.4.00.0060.01214.66
7.3.330.0030.00313.24
7.3.320.0000.00513.39
7.3.310.0030.00516.27
7.3.300.0070.00016.38
7.3.290.0070.00916.36
7.3.280.0060.01116.39
7.3.270.0150.00917.40
7.3.260.0100.00716.38
7.3.250.0120.00816.48
7.3.240.0090.00916.34
7.3.230.0140.00916.39
7.3.210.0110.01016.34
7.3.200.0070.01116.31
7.3.190.0090.01216.48
7.3.180.0150.00316.55
7.3.170.0060.01016.52
7.3.160.0110.00516.39
7.2.330.0070.01116.33
7.2.320.0240.00016.35
7.2.310.0030.01516.79
7.2.300.0090.00816.70
7.2.290.0030.01516.82
7.2.60.0030.01016.99
7.2.00.0030.01019.36
7.1.200.0120.00315.75
7.1.100.0150.00218.31
7.1.70.0030.00616.86
7.1.60.0080.01519.13
7.1.50.0060.01116.63
7.1.00.0030.07722.51
7.0.200.0240.00614.56
7.0.60.0170.07720.04
7.0.50.0000.05317.85
7.0.40.0130.08320.23
7.0.30.0300.08320.07
7.0.20.0100.04720.24
7.0.10.0100.07020.09
7.0.00.0000.04720.22
5.6.280.0030.03020.93
5.6.210.0030.04020.51
5.6.200.0100.05718.20
5.6.190.0100.08720.57
5.6.180.0470.05020.63
5.6.170.0370.08020.51
5.6.160.0100.05020.61
5.6.150.0070.05018.15
5.6.140.0070.04718.18
5.6.130.0100.06018.16
5.6.120.0070.05320.97
5.6.110.0130.06021.00
5.6.100.0130.07720.96
5.6.90.0170.07020.98
5.6.80.0030.04720.29
5.5.350.0400.07020.54
5.5.340.0070.04018.09
5.5.330.0030.08320.13
5.5.320.0430.05020.42
5.5.310.0330.07020.23
5.5.300.0070.04317.95
5.5.290.0100.06717.99
5.5.280.0100.08320.99
5.5.270.0070.05720.62
5.5.260.0030.04720.89
5.5.250.0100.08320.71
5.5.240.0100.07320.27
5.4.450.0330.06719.34
5.4.440.0100.05719.70
5.4.430.0070.06019.46
5.4.420.0100.05319.70
5.4.410.0730.05719.07
5.4.400.0870.04319.38
5.4.390.0770.05719.15
5.4.380.0800.04719.39
5.4.370.0870.05319.06
5.4.360.0630.06718.86
5.4.350.0700.05718.98
5.4.340.0770.05319.12
5.4.320.0830.04718.87
5.4.310.0770.07019.26
5.4.300.0800.05019.30
5.4.290.0830.05019.30
5.4.280.0770.05319.13
5.4.270.0770.05019.27
5.4.260.0700.05718.98
5.4.250.0600.05719.37
5.4.240.0700.05719.30
5.4.230.0770.06019.24
5.4.220.0800.05019.11
5.4.210.0830.05019.18
5.4.200.0800.04719.25
5.4.190.0670.06018.99
5.4.180.0670.05319.27
5.4.170.0830.04719.25
5.4.160.0600.05319.13
5.4.150.0830.06718.99
5.4.140.0730.05316.48
5.4.130.0730.03716.48
5.4.120.0700.06316.43
5.4.110.0800.04716.70
5.4.100.0800.04316.57
5.4.90.0770.05016.67
5.4.80.0770.05316.31
5.4.70.0200.06016.31
5.4.60.0170.05016.43
5.4.50.0030.06316.48
5.4.40.0230.04316.42
5.4.30.0100.07316.43
5.4.20.0230.05716.52
5.4.10.0200.03316.32

preferences:
51.96 ms | 400 KiB | 5 Q