3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Singleton { private static $instance; private function __construct() { } public static function getInstance() { if (null === self::$instance) { self::$instance = new self(); } return self::$instance; } } $cl = function() { return new self(); }; var_dump(Singleton::getInstance()); var_dump(Singleton::getInstance()); var_dump(Singleton::getInstance());

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)
8.3.60.0110.00416.38
8.3.50.0080.01222.00
8.3.40.0070.01018.70
8.3.30.0100.00719.09
8.3.20.0080.00020.34
8.3.10.0030.00623.53
8.3.00.0080.00020.75
8.2.180.0000.01516.88
8.2.170.0120.00322.96
8.2.160.0100.00720.36
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0060.00322.05
8.2.110.0060.00322.14
8.2.100.0070.00719.63
8.2.90.0030.00519.22
8.2.80.0060.00317.97
8.2.70.0030.00717.63
8.2.60.0030.00617.80
8.2.50.0040.00418.07
8.2.40.0080.00019.82
8.2.30.0080.00018.27
8.2.20.0060.00317.60
8.2.10.0040.00418.12
8.2.00.0000.00717.68
8.1.280.0120.00425.92
8.1.270.0030.00522.14
8.1.260.0000.00826.35
8.1.250.0070.00028.09
8.1.240.0110.00023.84
8.1.230.0070.00319.08
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0090.00017.48
8.1.190.0060.00317.35
8.1.180.0060.00318.10
8.1.170.0000.00818.63
8.1.160.0070.00022.03
8.1.150.0040.00418.66
8.1.140.0040.00417.50
8.1.130.0030.00317.75
8.1.120.0000.00717.50
8.1.110.0030.00717.52
8.1.100.0040.00417.43
8.1.90.0000.00817.50
8.1.80.0050.00317.46
8.1.70.0070.00017.31
8.1.60.0030.00617.53
8.1.50.0080.00017.48
8.1.40.0060.00317.53
8.1.30.0030.00517.63
8.1.20.0000.00817.68
8.1.10.0000.00717.46
8.1.00.0080.00017.36
8.0.300.0040.00418.77
8.0.290.0020.00517.05
8.0.280.0030.00318.30
8.0.270.0040.00417.20
8.0.260.0030.00318.49
8.0.250.0030.00316.83
8.0.240.0000.00816.84
8.0.230.0040.00416.82
8.0.220.0000.00716.84
8.0.210.0030.00316.78
8.0.200.0000.00616.94
8.0.190.0000.00716.85
8.0.180.0000.00816.82
8.0.170.0080.00016.94
8.0.160.0000.00816.95
8.0.150.0020.00516.80
8.0.140.0050.00216.84
8.0.130.0000.00613.31
8.0.120.0080.00016.88
8.0.110.0070.00016.84
8.0.100.0040.00416.92
8.0.90.0040.00416.81
8.0.80.0070.01416.89
8.0.70.0000.00816.74
8.0.60.0050.00316.91
8.0.50.0040.00416.76
8.0.30.0140.00517.13
8.0.20.0140.00517.40
8.0.10.0000.00716.91
8.0.00.0090.01216.73
7.4.330.0050.00015.12
7.4.320.0040.00416.60
7.4.300.0030.00316.63
7.4.290.0000.00716.41
7.4.280.0070.00016.64
7.4.270.0070.00016.54
7.4.260.0050.00216.52
7.4.250.0030.00316.48
7.4.240.0050.00216.58
7.4.230.0000.00716.35
7.4.220.0150.00316.55
7.4.210.0090.00616.57
7.4.200.0000.00716.51
7.4.190.0030.00316.69
7.4.160.0040.01116.41
7.4.150.0110.00717.40
7.4.140.0130.00817.86
7.4.130.0140.00716.51
7.4.120.0070.01016.44
7.4.110.0100.01316.63
7.4.100.0030.01816.49
7.4.90.0060.01216.57
7.4.80.0080.01219.39
7.4.70.0030.01616.74
7.4.60.0070.01316.36
7.4.50.0000.00616.50
7.4.40.0100.01116.40
7.4.30.0030.01316.55
7.4.00.0030.00914.59
7.3.330.0020.00213.14
7.3.320.0030.00313.41
7.3.310.0000.00816.13
7.3.300.0030.00316.16
7.3.290.0110.00516.33
7.3.280.0060.01216.30
7.3.270.0110.00517.40
7.3.260.0060.01216.58
7.3.250.0140.00416.37
7.3.240.0090.00916.24
7.3.230.0120.01216.54
7.3.210.0070.01016.48
7.3.200.0100.01319.39
7.3.190.0030.01716.62
7.3.180.0060.01016.22
7.3.170.0080.01116.55
7.3.160.0100.00616.45
7.3.120.0060.00914.82
7.2.330.0150.00816.61
7.2.320.0060.01016.39
7.2.310.0070.01816.59
7.2.300.0100.00616.84
7.2.290.0040.01616.31
7.1.200.0090.00615.72
7.1.70.0060.00616.97
7.1.60.0090.01519.46
7.1.50.0030.01017.05
7.1.00.0070.07322.33
7.0.200.0030.00716.70
7.0.140.0000.07722.10
7.0.60.0100.08319.83
7.0.50.0100.08017.81
7.0.40.0100.06320.24
7.0.30.0230.04320.08
7.0.20.0270.07720.30
7.0.10.0000.05020.07
7.0.00.0000.08320.33
5.6.280.0030.07321.03
5.6.210.0070.08020.55
5.6.200.0030.09018.15
5.6.190.0000.07320.39
5.6.180.0300.04720.40
5.6.170.0370.05320.44
5.6.160.0070.04320.71
5.6.150.0100.04318.16
5.6.140.0000.06018.28
5.6.130.0030.06318.18
5.6.120.0030.04021.13
5.6.110.0130.08320.99
5.6.100.0070.06721.02
5.6.90.0030.06720.98
5.6.80.0030.06320.39
5.5.350.0430.07020.43
5.5.340.0130.07317.95
5.5.330.0130.06720.57
5.5.320.0000.04320.35
5.5.310.0200.05020.28
5.5.300.0000.06017.97
5.5.290.0070.07017.92
5.5.280.0030.08720.74
5.5.270.0070.07720.73
5.5.260.0130.07320.80
5.5.250.0170.05720.59
5.5.240.0070.08720.28
5.4.450.0070.06019.47
5.4.440.1030.07019.68
5.4.430.0070.05719.57
5.4.420.0570.05719.48
5.4.410.0900.05719.08
5.4.400.0930.05719.12
5.4.390.1030.05719.26
5.4.380.0170.05318.86
5.4.370.0100.05718.80
5.4.360.0130.05018.55
5.4.350.0230.04318.79
5.4.340.0170.05018.57
5.4.320.0070.04012.51
5.4.310.0070.04012.50
5.4.300.0120.05212.51
5.4.290.0100.06112.50
5.4.280.0140.04912.40
5.4.270.0110.05112.40
5.4.260.0080.05712.40
5.4.250.0110.04812.40
5.4.240.0130.04412.40
5.4.230.0100.05212.39
5.4.220.0070.05512.39
5.4.210.0150.04912.39
5.4.200.0120.06012.39
5.4.190.0130.06412.39
5.4.180.0130.10012.39
5.4.170.0120.06012.40
5.4.160.0200.06612.39
5.4.150.0140.04912.39
5.4.140.0090.05312.08
5.4.130.0080.05312.06
5.4.120.0080.05312.02
5.4.110.0080.05412.02
5.4.100.0080.04912.02
5.4.90.0110.05412.02
5.4.80.0090.05312.02
5.4.70.0100.04912.02
5.4.60.0100.04912.01
5.4.50.0130.04912.01
5.4.40.0100.04612.00
5.4.30.0060.04912.00
5.4.20.0090.05212.00
5.4.10.0120.03912.00
5.4.00.0100.03711.48
5.3.290.0090.05012.80
5.3.280.0080.04312.70
5.3.270.0090.04712.72
5.3.260.0080.06012.71
5.3.250.0090.05412.72
5.3.240.0070.05412.72
5.3.230.0070.03912.71
5.3.220.0120.06212.68
5.3.210.0110.05612.68
5.3.200.0110.05312.68
5.3.190.0190.06512.68
5.3.180.0110.03712.68
5.3.170.0080.05512.66
5.3.160.0050.04012.67
5.3.150.0100.03712.67
5.3.140.0070.04412.66
5.3.130.0100.05912.66
5.3.120.0100.05912.66
5.3.110.0120.05212.66
5.3.100.0110.04912.12
5.3.90.0100.04712.11
5.3.80.0080.05712.09
5.3.70.0130.05112.09
5.3.60.0140.05012.07
5.3.50.0170.04212.04
5.3.40.0110.06512.04
5.3.30.0120.05111.99
5.3.20.0110.04511.77
5.3.10.0080.04311.73
5.3.00.0050.04111.71
5.2.170.0040.0339.22
5.2.160.0030.0329.22
5.2.150.0060.0319.22
5.2.140.0060.0339.22
5.2.130.0050.0299.18
5.2.120.0100.0469.18
5.2.110.0070.0379.19
5.2.100.0060.0359.19
5.2.90.0080.0339.18
5.2.80.0130.0469.18
5.2.70.0110.0559.18
5.2.60.0080.0309.13
5.2.50.0080.0579.11
5.2.40.0090.0439.07
5.2.30.0070.0469.05
5.2.20.0060.0569.04
5.2.10.0080.0418.95
5.2.00.0030.0328.82
5.1.60.0050.0328.09
5.1.50.0020.0298.09
5.1.40.0060.0328.07
5.1.30.0060.0358.43
5.1.20.0060.0298.45
5.1.10.0020.0308.16
5.1.00.0050.0288.17
5.0.50.0020.0256.65
5.0.40.0050.0186.50
5.0.30.0040.0326.32
5.0.20.0050.0216.29
5.0.10.0050.0226.27
5.0.00.0070.0326.26
4.4.90.0020.0184.78
4.4.80.0020.0174.75
4.4.70.0040.0154.75
4.4.60.0020.0174.76
4.4.50.0040.0164.77
4.4.40.0030.0254.71
4.4.30.0050.0174.76
4.4.20.0020.0244.85
4.4.10.0040.0224.85
4.4.00.0030.0254.76
4.3.110.0050.0134.67
4.3.100.0020.0164.67
4.3.90.0090.0254.63
4.3.80.0030.0254.58
4.3.70.0030.0144.63
4.3.60.0010.0174.63
4.3.50.0040.0144.63
4.3.40.0030.0244.54
4.3.30.0060.0213.30
4.3.20.0100.0333.28
4.3.10.0040.0193.23
4.3.00.0030.01316.15

preferences:
38.82 ms | 401 KiB | 5 Q