3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Singleton { protected static $instance = null; /** * make contrutor not public */ protected function __construct() { } /** * @return static */ public static function getInstance() { if (self::$instance === null) { self::$instance = new self(); } return self::$instance; } } class ExampleSingleton extends Singleton { public $name = 'x'; } $s = ExampleSingleton::getInstance(); echo $s->name; $s->name = 'y'; echo ExampleSingleton::getInstance()->name; $s2 = new ExampleSingleton(); echo $s2->name;

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)
8.3.60.0140.00716.75
8.3.50.0310.01022.05
8.3.40.0110.00418.81
8.3.30.0040.01119.02
8.3.20.0040.00420.30
8.3.10.0040.00423.66
8.3.00.0000.00820.62
8.2.180.0070.00718.54
8.2.170.0060.00922.96
8.2.160.0080.00622.12
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00420.91
8.2.110.0090.00022.30
8.2.100.0060.00617.91
8.2.90.0000.00818.98
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00818.05
8.2.50.0000.00818.07
8.2.40.0000.00819.39
8.2.30.0040.00418.08
8.2.20.0000.00717.59
8.2.10.0040.00417.77
8.2.00.0000.00717.64
8.1.280.0140.00025.92
8.1.270.0050.00323.78
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0090.00023.61
8.1.230.0000.01119.02
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0030.00617.22
8.1.190.0000.00817.39
8.1.180.0070.00318.10
8.1.170.0000.00818.51
8.1.160.0050.00321.93
8.1.150.0000.00718.54
8.1.140.0040.00417.34
8.1.130.0040.00417.66
8.1.120.0000.00717.40
8.1.110.0000.00817.37
8.1.100.0040.00417.35
8.1.90.0040.00417.42
8.1.80.0000.00717.24
8.1.70.0030.00317.28
8.1.60.0030.00617.46
8.1.50.0040.00417.37
8.1.40.0000.00817.38
8.1.30.0040.00417.57
8.1.20.0040.00417.64
8.1.10.0000.00717.53
8.1.00.0000.00817.52
8.0.300.0080.00018.77
8.0.290.0040.00417.05
8.0.280.0030.00318.35
8.0.270.0030.00317.28
8.0.260.0000.00616.86
8.0.250.0030.00316.97
8.0.240.0030.00316.97
8.0.230.0080.00016.94
8.0.220.0030.00316.80
8.0.210.0020.00516.88
8.0.200.0030.00616.91
8.0.190.0000.00817.02
8.0.180.0000.00816.89
8.0.170.0050.00216.84
8.0.160.0050.00316.90
8.0.150.0000.00716.88
8.0.140.0000.00816.88
8.0.130.0030.00313.37
8.0.120.0030.00516.86
8.0.110.0050.00216.97
8.0.100.0050.00216.80
8.0.90.0030.00716.90
8.0.80.0090.00616.92
8.0.70.0040.00316.74
8.0.60.0040.00416.79
8.0.50.0070.00016.86
8.0.30.0110.00817.13
8.0.20.0110.00917.41
8.0.10.0000.00716.96
8.0.00.0100.01016.87
7.4.330.0050.00015.13
7.4.320.0070.00016.57
7.4.300.0030.00316.55
7.4.290.0000.00716.53
7.4.280.0000.00716.59
7.4.270.0030.00316.55
7.4.260.0030.00316.55
7.4.250.0080.00016.46
7.4.240.0020.00516.52
7.4.230.0050.00216.61
7.4.220.0090.00916.58
7.4.210.0110.00516.45
7.4.200.0000.00716.63
7.4.190.0080.00016.52
7.4.160.0090.00616.45
7.4.150.0090.00917.40
7.4.140.0090.00817.86
7.4.130.0140.00316.51
7.4.120.0060.01216.61
7.4.110.0130.00316.75
7.4.100.0140.00616.53
7.4.90.0100.01016.41
7.4.80.0070.01016.47
7.4.70.0060.01116.45
7.4.60.0060.01016.41
7.4.50.0000.00616.68
7.4.40.0100.00022.77
7.4.30.0080.00816.68
7.4.00.0000.01514.83
7.3.330.0000.00513.30
7.3.320.0000.00513.39
7.3.310.0070.00016.33
7.3.300.0030.00316.38
7.3.290.0030.01116.37
7.3.280.0110.00716.38
7.3.270.0060.00917.40
7.3.260.0160.00916.35
7.3.250.0080.00916.44
7.3.240.0100.00716.43
7.3.230.0030.01316.39
7.3.210.0070.01016.36
7.3.200.0060.01619.39
7.3.190.0120.01216.57
7.3.180.0060.00916.64
7.3.170.0030.01516.35
7.3.160.0060.00916.54
7.3.120.0060.00914.81
7.2.330.0130.00416.42
7.2.320.0070.01416.48
7.2.310.0120.00916.55
7.2.300.0130.00916.38
7.2.290.0160.00616.43
7.2.60.0070.00717.08
7.2.00.0030.01019.54
7.1.200.0040.00715.45
7.1.100.0090.00318.03
7.1.70.0080.00017.10
7.1.60.0170.00019.27
7.1.50.0030.00916.51
7.1.00.0070.07322.36
7.0.200.0000.00816.79
7.0.140.0100.06722.13
7.0.60.0030.06719.92
7.0.50.0070.08017.95
7.0.40.0030.06020.27
7.0.30.0300.07320.23
7.0.20.0370.07020.13
7.0.10.0230.07320.24
7.0.00.0070.08020.29
5.6.280.0000.07721.08
5.6.210.0130.06720.47
5.6.200.0030.04018.22
5.6.190.0100.07020.39
5.6.180.0030.06720.41
5.6.170.0330.04020.39
5.6.160.0030.04020.47
5.6.150.0100.07718.15
5.6.140.0070.08318.15
5.6.130.0000.08318.17
5.6.120.0100.08021.00
5.6.110.0070.08020.90
5.6.100.0030.08320.98
5.6.90.0030.07020.98
5.6.80.0200.07020.29
5.6.70.3930.04720.37
5.5.350.0070.08020.30
5.5.340.0100.03318.02
5.5.330.0070.07320.19
5.5.320.0030.07720.34
5.5.310.0230.05020.34
5.5.300.0070.06017.97
5.5.290.0130.07717.99
5.5.280.0030.04020.74
5.5.270.0030.08320.84
5.5.260.0200.04720.80
5.5.250.0170.06720.58
5.5.240.0000.04020.24
5.4.450.1930.04019.27
5.4.440.1930.04019.34
5.4.430.2070.04319.40
5.4.420.1800.05019.30
5.4.410.2130.04319.43
5.4.400.2070.04318.95
5.4.390.2000.03719.09
5.4.380.1830.03719.06
5.4.370.2070.04719.05
5.4.360.1930.03318.99
5.4.350.2030.03019.01
5.4.340.2230.04018.84
5.4.320.1930.03718.87
5.4.310.2000.05019.22
5.4.300.1970.04719.22
5.4.290.2070.04019.30
5.4.280.2030.04318.83
5.4.270.1900.03719.10
5.4.260.2130.03319.13
5.4.250.1930.03719.18
5.4.240.1900.03318.86
5.4.230.1930.03718.86
5.4.220.1830.04018.99
5.4.210.2070.03719.18
5.4.200.2030.03718.82
5.4.190.1930.03318.96
5.4.180.2130.03319.23
5.4.170.2130.03719.07
5.4.160.1370.03318.92
5.4.150.0000.04318.92
5.4.140.0130.05316.59
5.4.130.1230.05716.39
5.4.120.2100.04016.39
5.4.110.2030.04016.61
5.4.100.2000.04316.34
5.4.90.2070.04316.50
5.4.80.2030.04016.48
5.4.70.2000.04316.61
5.4.60.1800.03716.56
5.4.50.2030.04016.37
5.4.40.2130.03716.55
5.4.30.2030.04316.55
5.4.20.2070.04316.37
5.4.10.2070.03716.53
5.4.00.1900.04715.80
5.3.290.1770.04314.68
5.3.280.2130.03714.57
5.3.270.2000.04714.51
5.3.260.1900.04314.52
5.3.250.1870.04014.68
5.3.240.2000.03714.75
5.3.230.2070.04714.57
5.3.220.2030.03014.63
5.3.210.1770.04014.57
5.3.200.2000.04714.46
5.3.190.2100.04014.54
5.3.180.2030.04314.64
5.3.170.2130.03714.68
5.3.160.1830.04014.63
5.3.150.1870.03714.46
5.3.140.1900.03314.47
5.3.130.1630.04314.45
5.3.120.1800.03314.62
5.3.110.1900.03314.56
5.3.100.0170.04713.95
5.3.90.0000.04014.08
5.3.80.0200.03313.94
5.3.70.1500.03313.95
5.3.60.1670.04313.91
5.3.50.2030.03313.86
5.3.40.1870.03014.03
5.3.30.1930.03313.84
5.3.20.1730.03013.92
5.3.10.1900.03313.57
5.3.00.1400.03313.65
5.2.170.1530.03011.30
5.2.160.1430.03011.30
5.2.150.1570.03711.18
5.2.140.1300.03011.38
5.2.130.0030.02711.03
5.2.120.0070.02711.11
5.2.110.0030.02711.11
5.2.100.0070.03011.01
5.2.90.1570.03311.20
5.2.80.1430.02711.22
5.2.70.1730.03011.03
5.2.60.1400.02710.96
5.2.50.1630.02310.95
5.2.40.1500.02710.95
5.2.30.1330.02310.89
5.2.20.1300.02011.02
5.2.10.1100.03010.76
5.2.00.1270.03010.81
5.1.60.1100.03010.13
5.1.50.1200.02710.13
5.1.40.1170.0279.97
5.1.30.0670.02710.32
5.1.20.1330.02310.29
5.1.10.1300.02710.15
5.1.00.1370.03010.23
5.0.50.0600.0178.54
5.0.40.0570.0178.42
5.0.30.0630.0338.14
5.0.20.0770.0338.21
5.0.10.0770.0278.16
5.0.00.0730.0508.10
4.4.90.0770.0207.71
4.4.80.0670.0237.71
4.4.70.0800.0207.71
4.4.60.0800.0207.71
4.4.50.0670.0137.71
4.4.40.0830.0277.71
4.4.30.0930.0207.71
4.4.20.0830.0137.71
4.4.10.0800.0207.71
4.4.00.0700.0237.71
4.3.110.0900.0237.71
4.3.100.1030.0207.71
4.3.90.0800.0137.71
4.3.80.0870.0277.71
4.3.70.0970.0177.71
4.3.60.0970.0177.71
4.3.50.0970.0207.71
4.3.40.0930.0237.71
4.3.30.0430.0277.71
4.3.20.0370.0207.71
4.3.10.0430.0307.71
4.3.00.0430.0277.71

preferences:
37.58 ms | 401 KiB | 5 Q