3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Connection {} class Singleton{ static public function get_instance(){ static $i; $i ?: $i = new Connection(); return $i; } } class A extends Singleton{} class B extends A{} var_dump(A::get_instance()); var_dump(B::get_instance()); var_dump(A::get_instance());

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)
8.3.70.0160.00316.63
8.3.60.0080.00618.55
8.3.50.0100.01121.99
8.3.40.0060.01018.84
8.3.30.0080.00619.10
8.3.20.0040.00420.16
8.3.10.0050.00323.61
8.3.00.0040.00419.08
8.2.190.0040.01116.75
8.2.180.0090.00616.50
8.2.170.0030.01022.96
8.2.160.0100.00320.44
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00419.65
8.2.110.0100.00020.25
8.2.100.0040.00817.89
8.2.90.0030.00617.63
8.2.80.0040.00417.97
8.2.70.0030.00517.93
8.2.60.0090.00018.22
8.2.50.0040.00418.10
8.2.40.0030.00521.20
8.2.30.0070.00019.26
8.2.20.0070.00017.57
8.2.10.0050.00218.12
8.2.00.0020.00517.68
8.1.280.0040.01425.92
8.1.270.0090.00018.93
8.1.260.0050.00226.35
8.1.250.0070.00028.09
8.1.240.0060.00322.10
8.1.230.0080.00320.31
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0040.00417.35
8.1.190.0050.00317.25
8.1.180.0080.00018.10
8.1.170.0050.00318.51
8.1.160.0000.00718.93
8.1.150.0040.00418.81
8.1.140.0040.00417.37
8.1.130.0030.00517.74
8.1.120.0050.00217.31
8.1.110.0030.00517.46
8.1.100.0040.00417.36
8.1.90.0030.00317.39
8.1.80.0070.00017.51
8.1.70.0000.00717.35
8.1.60.0000.00917.55
8.1.50.0040.00417.40
8.1.40.0050.00217.41
8.1.30.0050.00317.56
8.1.20.0000.00717.57
8.1.10.0000.00717.50
8.1.00.0000.00717.55
8.0.300.0040.00421.55
8.0.290.0050.00316.75
8.0.280.0030.00318.46
8.0.270.0070.00017.29
8.0.260.0030.00317.27
8.0.250.0000.00717.03
8.0.240.0050.00316.96
8.0.230.0030.00316.94
8.0.220.0030.00316.91
8.0.210.0030.00316.86
8.0.200.0030.00316.84
8.0.190.0070.00016.99
8.0.180.0000.00716.96
8.0.170.0030.00616.93
8.0.160.0030.00316.87
8.0.150.0030.00716.81
8.0.140.0000.00816.88
8.0.130.0000.00513.28
8.0.120.0000.00816.77
8.0.110.0030.00516.91
8.0.100.0040.00416.80
8.0.90.0000.00716.84
8.0.80.0030.01416.86
8.0.70.0050.00316.72
8.0.60.0050.00216.91
8.0.50.0040.00416.80
8.0.30.0090.01417.13
8.0.20.0080.01017.40
8.0.10.0030.00316.98
8.0.00.0080.01016.94
7.4.330.0000.00515.03
7.4.320.0030.00316.50
7.4.300.0030.00316.61
7.4.290.0030.00316.37
7.4.280.0040.00416.51
7.4.270.0030.00316.51
7.4.260.0030.00716.59
7.4.250.0040.00416.38
7.4.240.0020.00616.58
7.4.230.0000.00716.64
7.4.220.0100.01016.67
7.4.210.0130.00316.55
7.4.200.0000.00716.31
7.4.160.0000.01516.62
7.4.150.0090.01517.40
7.4.140.0080.01217.86
7.4.130.0090.00916.63
7.4.120.0100.00716.52
7.4.110.0080.00816.45
7.4.100.0080.01116.39
7.4.90.0030.01316.49
7.4.80.0140.00419.39
7.4.70.0100.00716.58
7.4.60.0060.01316.59
7.4.50.0050.00316.53
7.4.40.0050.00416.59
7.4.30.0090.00616.55
7.4.00.0000.01415.22
7.3.330.0000.00613.15
7.3.320.0020.00213.39
7.3.310.0030.00316.35
7.3.300.0040.00416.20
7.3.290.0080.00516.28
7.3.280.0090.00916.27
7.3.270.0100.00717.40
7.3.260.0120.00916.60
7.3.250.0120.00516.42
7.3.240.0100.00716.51
7.3.230.0180.00016.53
7.3.210.0030.01416.54
7.3.200.0070.01019.39
7.3.190.0130.00716.34
7.3.180.0160.00616.65
7.3.170.0090.01016.39
7.3.160.0160.00016.53
7.2.330.0130.00416.74
7.2.320.0060.01216.70
7.2.310.0030.01316.71
7.2.300.0070.01116.72
7.2.290.0130.00716.70
7.2.00.0110.00919.39
7.1.100.0060.00917.98
7.1.70.0030.00616.86
7.1.60.0100.01019.22
7.1.50.0210.01434.72
7.1.00.0100.06722.28
7.0.200.0000.01016.70
7.0.140.0030.06321.98
7.0.60.0200.07319.97
7.0.50.0070.08017.89
7.0.40.0130.04319.91
7.0.30.0230.04020.11
7.0.20.0230.06720.24
7.0.10.0000.05020.06
7.0.00.0100.08020.05
5.6.280.0130.08720.89
5.6.210.0100.08020.53
5.6.200.0030.09318.13
5.6.190.0100.03720.41
5.6.180.0300.08020.52
5.6.170.0130.08320.64
5.6.160.0100.04720.54
5.6.150.0000.05718.28
5.6.140.0100.03318.14
5.6.130.0170.07018.21
5.6.120.0170.06720.90
5.6.110.0030.08721.01
5.6.100.0000.04320.99
5.6.90.0130.07020.95
5.6.80.0130.03320.29
5.5.350.0270.07720.39
5.5.340.0130.06017.92
5.5.330.0000.04320.57
5.5.320.0130.08020.34
5.5.310.0270.07320.46
5.5.300.0130.04717.95
5.5.290.0130.06718.08
5.5.280.0130.08020.86
5.5.270.0100.06720.73
5.5.260.0200.07720.80
5.5.250.0170.07720.47
5.5.240.0030.07720.20
5.4.450.0130.05719.59
5.4.440.0070.06319.48
5.4.430.0130.05319.23
5.4.420.0070.05719.52
5.4.410.0270.05019.54
5.4.400.0200.04719.22
5.4.390.0170.05019.30
5.4.380.0870.05718.57
5.4.370.0930.05018.70
5.4.360.1000.04318.76
5.4.350.0870.07018.52
5.4.340.0900.05318.79
5.4.320.0870.05718.47
5.4.310.0870.06018.63
5.4.300.1030.04018.57
5.4.290.1000.05318.56
5.4.280.0930.05318.66
5.4.270.1200.06318.53
5.4.260.1000.04718.73
5.4.250.1030.05018.72
5.4.240.0730.07318.74
5.4.230.0930.05318.58
5.4.220.0930.06018.74
5.4.210.1030.04318.73
5.4.200.0930.04716.64
5.4.190.0930.05018.75
5.4.180.0900.06318.82
5.4.170.0930.06318.82
5.4.160.0930.05018.71
5.4.150.0930.05318.76
5.4.140.1100.06716.30
5.4.130.0900.05316.26
5.4.120.0930.05016.25
5.4.110.0900.05716.23
5.4.100.1130.05716.36
5.4.90.0970.04716.35
5.4.80.1000.04716.20
5.4.70.0900.05316.22
5.4.60.0830.05716.18
5.4.50.0970.05016.26
5.4.40.1030.05016.29
5.4.30.0900.05016.18
5.4.20.1070.04716.32
5.4.10.0870.05016.22
5.4.00.0970.04715.68
5.3.290.0930.05014.66
5.3.280.0870.05714.81
5.3.270.0930.05714.61
5.3.260.0730.06714.62
5.3.250.1000.04714.77
5.3.240.0930.05014.82
5.3.230.0970.05314.82
5.3.220.1070.05014.77
5.3.210.0930.06314.55
5.3.200.1070.05714.61
5.3.190.0870.05714.57
5.3.180.1170.06014.67
5.3.170.0870.06014.66
5.3.160.0900.05314.79
5.3.150.1030.04714.67
5.3.140.1000.06014.59
5.3.130.0870.06014.54
5.3.120.0970.05314.55
5.3.110.1200.06714.69
5.3.100.0870.05314.14
5.3.90.1100.05714.00
5.3.80.1030.06014.00
5.3.70.1100.05714.12
5.3.60.0970.04314.05
5.3.50.0900.05314.00
5.3.40.0970.04714.03
5.3.30.1000.04314.01
5.3.20.0970.05313.79
5.3.10.0870.05313.86
5.3.00.0830.05313.68
5.2.170.0630.05011.20
5.2.160.0670.04711.25
5.2.150.0800.03711.13
5.2.140.0770.03711.24
5.2.130.0770.04011.31
5.2.120.0630.04711.13
5.2.110.0700.04711.16
5.2.100.0700.04311.31
5.2.90.1070.04311.14
5.2.80.0870.05311.20
5.2.70.0800.03711.13
5.2.60.1000.05011.17
5.2.50.0730.04011.00
5.2.40.0630.03711.10
5.2.30.0630.03711.04
5.2.20.0670.03310.97
5.2.10.0600.04010.96
5.2.00.0700.04710.79
5.1.60.0770.04010.18
5.1.50.0600.03710.10
5.1.40.0800.03710.11
5.1.30.0700.03310.56
5.1.20.0730.02710.41
5.1.10.0600.04010.14
5.1.00.0830.04010.27
5.0.50.0370.0278.76
5.0.40.0270.0378.45
5.0.30.0270.0508.36
5.0.20.0270.0338.36
5.0.10.0300.0338.38
5.0.00.0330.0438.39
4.4.90.0300.0238.36
4.4.80.0300.0238.36
4.4.70.0270.0238.36
4.4.60.0300.0238.36
4.4.50.0270.0238.36
4.4.40.0330.0378.36
4.4.30.0270.0238.36
4.4.20.0300.0238.36
4.4.10.0270.0238.36
4.4.00.0230.0438.36
4.3.110.0300.0208.36
4.3.100.0300.0278.36
4.3.90.0270.0238.36
4.3.80.0300.0338.36
4.3.70.0370.0178.36
4.3.60.0330.0178.36
4.3.50.0370.0178.36
4.3.40.0370.0278.36
4.3.30.0200.0178.36
4.3.20.0170.0208.36
4.3.10.0130.0238.36
4.3.00.0000.0307.57

preferences:
61.6 ms | 401 KiB | 5 Q