3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Check { private static $instance; public function getInstance($name = null) { if (isset(self::$instance)) { return self::$instance; } self::$instance = $name; return self::$instance; } } $a = new Check; var_dump($a->getInstance('a')); $b = new Check; var_dump($b->getInstance('b')); var_dump($a->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)
8.3.40.0080.01218.92
8.3.30.0040.01119.08
8.3.20.0040.00420.39
8.3.10.0080.00023.66
8.3.00.0080.00019.25
8.2.170.0110.00422.96
8.2.160.0070.00720.13
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0100.00326.16
8.2.120.0080.00020.80
8.2.110.0080.00022.20
8.2.100.0090.00319.36
8.2.90.0050.00319.21
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0000.00817.93
8.2.50.0060.00318.07
8.2.40.0000.00818.22
8.2.30.0040.00418.17
8.2.20.0070.00017.68
8.2.10.0040.00418.01
8.2.00.0030.00617.65
8.1.270.0000.01023.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00723.97
8.1.230.0060.00919.05
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0040.00418.38
8.1.160.0000.00821.97
8.1.150.0040.00418.80
8.1.140.0040.00417.46
8.1.130.0030.00317.41
8.1.120.0000.00717.38
8.1.110.0080.00017.42
8.1.100.0000.00817.36
8.1.90.0040.00417.47
8.1.80.0040.00417.47
8.1.70.0040.00417.47
8.1.60.0060.00317.67
8.1.50.0000.00817.59
8.1.40.0060.00317.50
8.1.30.0060.00317.72
8.1.20.0140.00017.65
8.1.10.0040.00417.44
8.1.00.0040.00417.51
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0040.00418.46
8.0.270.0000.00717.18
8.0.260.0040.00416.83
8.0.250.0030.00317.02
8.0.240.0000.00816.94
8.0.230.0070.00016.84
8.0.220.0000.00716.94
8.0.210.0000.00716.91
8.0.200.0040.00416.99
8.0.190.0040.00416.99
8.0.180.0040.00416.92
8.0.170.0040.00416.81
8.0.160.0040.00816.88
8.0.150.0030.00716.71
8.0.140.0000.00716.90
8.0.130.0000.00813.29
8.0.120.0000.00816.94
8.0.110.0070.00016.80
8.0.100.0000.00716.96
8.0.90.0070.00016.91
8.0.80.0110.00616.89
8.0.70.0040.00416.95
8.0.60.0000.00816.71
8.0.50.0040.00416.89
8.0.30.0060.01417.09
8.0.20.0150.00717.40
8.0.10.0040.00416.91
8.0.00.0110.00716.83
7.4.330.0050.00015.05
7.4.320.0040.00416.64
7.4.300.0000.00616.49
7.4.290.0040.00416.54
7.4.280.0070.00016.55
7.4.270.0030.00316.52
7.4.260.0000.00716.64
7.4.250.0050.00216.56
7.4.240.0000.00716.57
7.4.230.0050.00316.63
7.4.220.0050.01116.46
7.4.210.0060.01316.64
7.4.200.0000.00716.70
7.4.160.0120.00416.55
7.4.150.0100.00717.40
7.4.140.0110.00617.86
7.4.130.0100.00616.44
7.4.120.0060.01016.60
7.4.110.0090.00916.57
7.4.100.0100.00716.57
7.4.90.0100.01016.56
7.4.80.0130.00619.39
7.4.70.0120.00916.58
7.4.60.0070.01016.41
7.4.50.0040.00416.68
7.4.40.0080.00816.45
7.4.30.0100.01016.42
7.4.00.0030.01015.14
7.3.330.0030.00313.23
7.3.320.0030.00313.29
7.3.310.0000.00716.35
7.3.300.0030.00316.38
7.3.290.0030.01016.33
7.3.280.0060.01016.38
7.3.270.0060.01117.40
7.3.260.0130.00316.61
7.3.250.0080.00916.34
7.3.240.0100.00716.50
7.3.230.0070.01016.39
7.3.210.0110.00616.44
7.3.200.0060.01119.39
7.3.190.0050.01316.39
7.3.180.0060.01016.17
7.3.170.0060.01116.47
7.3.160.0090.00916.23
7.3.120.0080.00815.10
7.3.110.0040.01114.88
7.3.100.0100.00714.93
7.3.90.0100.00715.09
7.3.80.0040.01114.82
7.3.70.0070.01014.74
7.3.60.0070.00414.63
7.3.50.0040.00814.75
7.3.40.0030.01014.82
7.3.30.0070.00714.78
7.3.20.0070.00716.65
7.3.10.0060.00716.56
7.3.00.0080.00716.51
7.2.330.0120.01016.57
7.2.320.0090.00816.61
7.2.310.0100.01016.61
7.2.300.0060.01016.73
7.2.290.0060.00916.62
7.2.240.0000.01715.25
7.2.230.0000.01014.77
7.2.220.0070.01014.91
7.2.210.0070.01014.82
7.2.200.0000.01215.05
7.2.190.0090.00614.88
7.2.180.0040.01214.93
7.2.170.0070.01114.94
7.2.160.0070.01015.01
7.2.150.0030.00716.65
7.2.140.0030.01016.91
7.2.130.0080.00816.76
7.2.120.0070.00816.83
7.2.110.0070.00516.74
7.2.100.0110.00516.55
7.2.90.0140.00816.89
7.2.80.0050.00916.80
7.2.70.0040.01016.75
7.2.60.0090.00516.81
7.2.50.0170.00616.97
7.2.40.0110.00616.57
7.2.30.0060.00816.65
7.2.20.0070.01016.63
7.2.10.0080.00816.60
7.2.00.0080.00617.50
7.1.330.0000.01515.47
7.1.320.0070.00715.69
7.1.310.0040.01115.64
7.1.300.0030.01115.81
7.1.290.0060.00615.75
7.1.280.0110.00415.90
7.1.270.0040.01115.79
7.1.260.0050.00515.55
7.1.250.0030.00815.55
7.1.100.0090.00618.26
7.1.70.0030.00617.19
7.1.60.0120.01219.40
7.1.50.0100.01416.98
7.1.00.0030.07322.46
7.0.200.0050.00216.69
7.0.140.0070.07322.00
7.0.60.0170.07719.80
7.0.50.0070.04717.87
7.0.40.0000.04720.23
7.0.30.0230.08720.04
7.0.20.0230.03720.24
7.0.10.0030.04320.09
7.0.00.0100.03720.20
5.6.280.0030.07321.16
5.6.210.0030.03720.65
5.6.200.0030.04018.26
5.6.190.0130.08020.41
5.6.180.0270.07720.55
5.6.170.0270.04020.45
5.6.160.0000.04320.54
5.6.150.0100.08018.12
5.6.140.0100.05318.18
5.6.130.0070.06018.28
5.6.120.0070.05020.99
5.6.110.0100.08020.95
5.6.100.0000.04320.98
5.6.90.0030.04021.00
5.6.80.0100.04320.54
5.5.350.0230.03020.44
5.5.340.0070.04018.08
5.5.330.0100.06720.56
5.5.320.0170.04320.34
5.5.310.0300.06320.27
5.5.300.0070.08317.98
5.5.290.0030.07318.07
5.5.280.0070.05320.77
5.5.270.0030.04320.87
5.5.260.0030.07320.76
5.5.250.0130.07020.71
5.5.240.0000.06720.25
5.4.450.0730.05719.17
5.4.440.0700.05719.63
5.4.430.0670.05719.53
5.4.420.0230.04019.21
5.4.410.0770.05019.09
5.4.400.0330.05718.82
5.4.390.0400.05018.72
5.4.380.0200.04718.72
5.4.370.0130.05018.53
5.4.360.0030.04718.70
5.4.350.0160.09612.02
5.4.340.0070.03712.02
5.4.320.0070.03512.50
5.4.310.0050.03812.49
5.4.300.0030.03812.50
5.4.290.0060.03812.50
5.4.280.0050.03612.39
5.4.270.0050.03912.39
5.4.260.0110.04712.39
5.4.250.0090.03912.39
5.4.240.0090.03312.39
5.4.230.0040.04112.39
5.4.220.0050.03812.39
5.4.210.0040.03812.39
5.4.200.0070.03912.38
5.4.190.0040.04012.39
5.4.180.0080.03712.38
5.4.170.0040.03712.39
5.4.160.0020.03912.39
5.4.150.0060.03512.38
5.4.140.0060.03712.07
5.4.130.0020.03912.06
5.4.120.0030.03712.02
5.4.110.0060.03412.01
5.4.100.0030.03812.01
5.4.90.0070.03612.01
5.4.80.0070.03512.02
5.4.70.0070.03412.01
5.4.60.0040.03612.01
5.4.50.0070.03912.01
5.4.40.0110.03311.99
5.4.30.0050.03512.00
5.4.20.0050.03611.99
5.4.10.0040.03511.99
5.4.00.0050.03611.48
5.3.290.0080.03612.80
5.3.280.0050.03812.71
5.3.270.0050.04012.72
5.3.260.0050.04012.72
5.3.250.0050.03812.72
5.3.240.0040.03912.72
5.3.230.0070.03612.71
5.3.220.0030.04012.68
5.3.210.0080.03712.68
5.3.200.0090.05012.68
5.3.190.0050.04712.68
5.3.180.0030.03912.68
5.3.170.0050.03712.66
5.3.160.0120.03212.68
5.3.150.0040.04012.67
5.3.140.0080.03412.66
5.3.130.0040.04112.66
5.3.120.0040.04512.66
5.3.110.0080.04312.66
5.3.100.0090.04612.11
5.3.90.0090.04912.10
5.3.80.0060.03512.09
5.3.70.0030.03812.09
5.3.60.0080.03712.07
5.3.50.0030.04212.03
5.3.40.0080.03512.03
5.3.30.0090.03111.98
5.3.20.0060.03411.77
5.3.10.0070.03411.73
5.3.00.0070.03511.71
5.2.170.0070.0289.22
5.2.160.0080.0269.22
5.2.150.0050.0309.22
5.2.140.0070.0289.21
5.2.130.0050.0309.18
5.2.120.0020.0309.18
5.2.110.0040.0309.18
5.2.100.0060.0269.18
5.2.90.0030.0309.18
5.2.80.0030.0319.17
5.2.70.0040.0309.18
5.2.60.0030.0309.12
5.2.50.0040.0309.09
5.2.40.0030.0309.07
5.2.30.0060.0289.05
5.2.20.0070.0269.04
5.2.10.0040.0288.95
5.2.00.0050.0288.80
5.1.60.0050.0228.08
5.1.50.0040.0258.08
5.1.40.0030.0258.07
5.1.30.0060.0238.42
5.1.20.0020.0288.44
5.1.10.0020.0278.16
5.1.00.0050.0248.16
5.0.50.0030.0206.64
5.0.40.0020.0206.50
5.0.30.0030.0326.32
5.0.20.0050.0246.28
5.0.10.0060.0186.25
5.0.00.0030.0306.25
4.4.90.0010.0174.78
4.4.80.0010.0164.76
4.4.70.0030.0154.76
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0000.0284.71
4.4.30.0040.0144.76
4.4.20.0020.0164.85
4.4.10.0030.0164.85
4.4.00.0040.0234.76
4.3.110.0020.0164.67
4.3.100.0020.0154.67
4.3.90.0020.0154.63
4.3.80.0020.0254.58
4.3.70.0020.0154.63
4.3.60.0040.0134.63
4.3.50.0040.0144.63
4.3.40.0060.0214.54
4.3.30.0030.0153.30
4.3.20.0030.0153.28
4.3.10.0030.0143.24
4.3.00.0130.0237.11

preferences:
40.02 ms | 400 KiB | 5 Q