3v4l.org

run code in 300+ PHP versions simultaneously
<?php class FooSingleton extends BarSingleton { private $foo_instance; public static function getInstance() { if (!self::$foo_instance) { self::$foo_instance = new self; } } } class BarSingleton { private $bar_instance; public static function getInstance() { if (!self::$bar_instance) { // Defer to FooSingleton self::$bar_instance = parent::getInstance(); } } } $foo = FooSingleton::getInstance(); $bar = BarSingleton::getInstance(); // This should be true var_dump($foo === $bar);

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)
8.3.60.0150.00616.63
8.3.50.0100.00821.03
8.3.40.0090.00918.71
8.3.30.0030.01418.68
8.3.20.0000.00720.39
8.3.10.0050.00223.64
8.3.00.0050.00323.69
8.2.180.0120.00318.54
8.2.170.0070.00722.96
8.2.160.0060.01220.39
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0050.00319.70
8.2.120.0080.00026.35
8.2.110.0070.00319.31
8.2.100.0040.00717.80
8.2.90.0030.00619.09
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0040.00417.80
8.2.50.0030.00618.07
8.2.40.0060.00322.15
8.2.30.0000.00819.30
8.2.20.0050.00217.55
8.2.10.0050.00217.88
8.2.00.0000.00718.04
8.1.280.0000.01525.92
8.1.270.0090.00023.79
8.1.260.0050.00528.09
8.1.250.0080.00028.09
8.1.240.0060.00322.57
8.1.230.0090.00319.10
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0030.00617.38
8.1.190.0000.01217.13
8.1.180.0030.00618.10
8.1.170.0050.00318.62
8.1.160.0030.00320.61
8.1.150.0030.00518.71
8.1.140.0070.00319.35
8.1.130.0030.00317.62
8.1.120.0050.00217.24
8.1.110.0000.00717.33
8.1.100.0030.00517.27
8.1.90.0000.00717.37
8.1.80.0020.00517.28
8.1.70.0000.00817.23
8.1.60.0050.00317.48
8.1.50.0000.00917.39
8.1.40.0080.00017.38
8.1.30.0000.00817.60
8.1.20.0000.00717.51
8.1.10.0040.00417.44
8.1.00.0050.00317.34
8.0.300.0000.00818.77
8.0.290.0070.00016.75
8.0.280.0030.00318.38
8.0.270.0000.00617.14
8.0.260.0040.00417.13
8.0.250.0000.00716.93
8.0.240.0080.00016.80
8.0.230.0030.00316.78
8.0.220.0000.00716.81
8.0.210.0050.00316.84
8.0.200.0040.00416.89
8.0.190.0030.00516.95
8.0.180.0000.00816.81
8.0.170.0040.00416.68
8.0.160.0000.00716.73
8.0.150.0040.00416.73
8.0.140.0050.00316.71
8.0.130.0040.00413.21
8.0.120.0050.00316.78
8.0.110.0040.00416.83
8.0.100.0070.00016.84
8.0.90.0000.00716.68
8.0.80.0100.01316.82
8.0.70.0070.00016.63
8.0.60.0050.00316.83
8.0.50.0070.00016.73
8.0.30.0110.00517.04
8.0.20.0050.01417.40
8.0.10.0000.00816.77
8.0.00.0070.01016.67
7.4.330.0050.00016.84
7.4.320.0000.00616.60
7.4.300.0070.00016.53
7.4.290.0030.00316.58
7.4.280.0090.00016.58
7.4.270.0030.00316.41
7.4.260.0000.00716.44
7.4.250.0040.00416.43
7.4.240.0020.00616.43
7.4.230.0070.00016.45
7.4.220.0080.01116.58
7.4.210.0050.01216.50
7.4.200.0030.00316.65
7.4.160.0100.00616.28
7.4.150.0100.00717.40
7.4.140.0170.01717.86
7.4.130.0110.00816.57
7.4.120.0100.00716.56
7.4.110.0100.00716.64
7.4.100.0030.01516.46
7.4.90.0060.01216.63
7.4.80.0100.01019.39
7.4.70.0080.00916.59
7.4.60.0120.00416.43
7.4.50.0070.00716.66
7.4.40.0080.01416.42
7.4.30.0100.00716.57
7.4.10.0090.00915.00
7.4.00.0030.01015.11
7.3.330.0050.00013.22
7.3.320.0030.00313.33
7.3.310.0000.00716.39
7.3.300.0040.00416.41
7.3.290.0030.00316.41
7.3.280.0080.01016.37
7.3.270.0070.01017.40
7.3.260.0110.00516.39
7.3.250.0090.01116.37
7.3.240.0140.00716.60
7.3.230.0060.01216.45
7.3.210.0120.00816.39
7.3.200.0000.02019.39
7.3.190.0120.00616.36
7.3.180.0110.00516.43
7.3.170.0120.00416.62
7.3.160.0000.01616.51
7.3.130.0060.01215.00
7.3.120.0030.01514.91
7.3.110.0070.01314.48
7.3.100.0070.01114.95
7.3.90.0030.01614.83
7.3.80.0130.00014.95
7.3.70.0040.00814.66
7.3.60.0080.00814.83
7.3.50.0090.00314.55
7.3.40.0040.00714.55
7.3.30.0090.00014.81
7.3.20.0070.00716.63
7.3.10.0060.01016.62
7.3.00.0030.00716.71
7.2.330.0070.01116.46
7.2.320.0100.00616.56
7.2.310.0150.00616.54
7.2.300.0110.00616.50
7.2.290.0090.00916.56
7.2.260.0110.00715.14
7.2.250.0090.00914.94
7.2.240.0080.00514.74
7.2.230.0070.01314.93
7.2.220.0000.01814.71
7.2.210.0070.01015.02
7.2.200.0030.00915.02
7.2.190.0030.00714.89
7.2.180.0000.01014.80
7.2.170.0150.00014.75
7.2.160.0060.00914.88
7.2.150.0070.01016.81
7.2.140.0070.00316.61
7.2.130.0070.01016.75
7.2.120.0090.00616.82
7.2.110.0040.00816.47
7.2.100.0070.00716.82
7.2.90.0100.00716.91
7.2.80.0040.01116.81
7.2.70.0060.00816.80
7.2.60.0090.00616.58
7.2.50.0000.01116.68
7.2.40.0110.00417.04
7.2.30.0060.01217.04
7.2.20.0060.00316.84
7.2.10.0110.00316.89
7.2.00.0050.01017.90
7.1.330.0030.01015.72
7.1.320.0120.00615.57
7.1.310.0030.01215.66
7.1.300.0030.00915.47
7.1.290.0000.00915.68
7.1.280.0070.00415.47
7.1.270.0040.01215.49
7.1.260.0040.00715.39
7.1.250.0090.00615.78
7.1.240.0070.00315.63
7.1.230.0070.00315.73
7.1.220.0070.00715.74
7.1.210.0090.00015.56
7.1.200.0070.00815.63
7.1.190.0090.00615.71
7.1.180.0000.01515.66
7.1.170.0000.01215.77
7.1.160.0070.01015.68
7.1.150.0000.01015.71
7.1.140.0070.00415.69
7.1.130.0100.00315.66
7.1.120.0070.00715.46
7.1.110.0090.00315.61
7.1.100.0070.00516.65
7.1.90.0000.01315.86
7.1.80.0070.01015.39
7.1.70.0050.01016.17
7.1.60.0070.01117.54
7.1.50.0040.00716.45
7.1.40.0000.01515.85
7.1.30.0130.00015.66
7.1.20.0000.01115.65
7.1.10.0040.01115.54
7.1.00.0080.04018.97
7.0.330.0000.01715.12
7.0.320.0050.00315.38
7.0.310.0050.00315.34
7.0.300.0040.01115.41
7.0.290.0110.00415.17
7.0.280.0070.00715.06
7.0.270.0000.01015.32
7.0.260.0030.01015.26
7.0.250.0030.00615.44
7.0.240.0070.00715.28
7.0.230.0000.01415.53
7.0.220.0030.01315.46
7.0.210.0040.01115.48
7.0.200.0060.00316.00
7.0.190.0090.00615.48
7.0.180.0100.00315.50
7.0.170.0000.01415.21
7.0.160.0030.00815.25
7.0.150.0040.01115.24
7.0.140.0030.01115.15
7.0.130.0030.01015.43
7.0.120.0000.01215.24
7.0.110.0060.00615.35
7.0.100.0030.00615.32
7.0.90.0070.00715.44
7.0.80.0030.01215.34
7.0.70.0140.00015.33
7.0.60.0130.03818.42
7.0.50.0050.04216.73
7.0.40.0090.03116.83
7.0.30.0180.03116.87
7.0.20.0160.03916.79
7.0.10.0080.02516.78
7.0.00.0070.04016.77
5.6.400.0030.00914.44
5.6.390.0100.00713.99
5.6.380.0000.01213.94
5.6.370.0080.00013.96
5.6.360.0110.00414.46
5.6.350.0000.01114.24
5.6.340.0040.01114.12
5.6.330.0060.00914.13
5.6.320.0080.00814.15
5.6.310.0070.00713.84
5.6.300.0060.00914.51
5.6.290.0000.01414.09
5.6.280.0030.02217.61
5.6.270.0030.00614.32
5.6.260.0060.00613.90
5.6.250.0000.01113.83
5.6.240.0030.00914.15
5.6.230.0070.00713.98
5.6.220.0040.00714.11
5.6.210.0100.04417.33
5.6.200.0050.04616.03
5.6.190.0110.04517.35
5.6.180.0260.04017.28
5.6.170.0180.04017.28
5.6.160.0130.04017.36
5.6.150.0030.04016.12
5.6.140.0060.03216.26
5.6.130.0080.04116.29
5.6.120.0080.02717.57
5.6.110.0120.04517.60
5.6.100.0070.04517.68
5.6.90.0100.02717.59
5.6.80.0040.03217.39
5.6.70.0000.01414.31
5.6.60.0070.00713.91
5.6.50.0030.00714.33
5.6.40.0040.00413.90
5.6.30.0040.00714.22
5.6.20.0000.01614.26
5.6.10.0030.01013.90
5.6.00.0080.00413.85
5.5.380.0000.01513.93
5.5.370.0080.00014.12
5.5.360.0070.00714.32
5.5.350.2190.02317.33
5.5.340.0060.04415.91
5.5.330.0080.02617.20
5.5.320.0370.03817.23
5.5.310.0170.02417.15
5.5.300.0060.03716.07
5.5.290.0120.04216.05
5.5.280.0000.05417.53
5.5.270.0060.02317.51
5.5.260.0080.03817.31
5.5.250.0150.03517.27
5.5.240.0130.02016.98
5.5.230.0030.00914.17
5.5.220.0110.00414.17
5.5.210.0030.01014.14
5.5.200.0070.00413.72
5.5.190.0080.00413.94
5.5.180.0110.00414.12
5.5.170.0040.01114.09
5.5.160.0000.00813.97
5.5.150.0060.00314.18
5.5.140.0030.01013.83
5.5.130.0040.01114.21
5.5.120.0040.01113.93
5.5.110.0000.01514.25
5.5.100.0050.00514.34
5.5.90.0040.00714.38
5.5.80.0080.00814.20
5.5.70.0070.00714.10
5.5.60.0030.00613.86
5.5.50.0110.00414.03
5.5.40.0040.01113.92
5.5.30.0090.00613.88
5.5.20.0030.01214.17
5.5.10.0060.00614.04
5.5.00.0050.00513.90

preferences:
46.55 ms | 401 KiB | 5 Q