3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { protected static $_instance; protected function __construct() {} public static function getInstance() { if (self::$_instance === null) { self::$_instance = new static(); } return self::$_instance; } } class B extends A {} echo get_class(B::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)
8.3.60.0120.00918.56
8.3.50.0120.00821.31
8.3.40.0070.00718.89
8.3.30.0000.01418.63
8.3.20.0040.00419.93
8.3.10.0050.00321.73
8.3.00.0040.00419.81
8.2.180.0130.00318.18
8.2.170.0140.00722.96
8.2.160.0130.00720.58
8.2.150.0040.00424.18
8.2.140.0000.00924.66
8.2.130.0030.00526.16
8.2.120.0080.00019.36
8.2.110.0090.00019.31
8.2.100.0110.00017.91
8.2.90.0040.00417.78
8.2.80.0000.00818.22
8.2.70.0040.00417.50
8.2.60.0050.00317.63
8.2.50.0050.00317.55
8.2.40.0000.00818.00
8.2.30.0040.00420.54
8.2.20.0030.00517.56
8.2.10.0040.00418.00
8.2.00.0050.00218.00
8.1.280.0040.01125.92
8.1.270.0060.00323.84
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0060.00320.71
8.1.230.0070.00420.84
8.1.220.0080.00017.74
8.1.210.0030.00618.90
8.1.200.0050.00317.35
8.1.190.0000.00817.35
8.1.180.0030.00618.10
8.1.170.0000.00717.62
8.1.160.0040.00422.00
8.1.150.0040.00418.81
8.1.140.0030.00517.38
8.1.130.0000.00717.65
8.1.120.0070.00017.41
8.1.110.0070.00017.38
8.1.100.0030.00517.43
8.1.90.0000.00717.31
8.1.80.0000.00817.27
8.1.70.0030.00317.38
8.1.60.0040.00417.48
8.1.50.0060.00617.52
8.1.40.0060.00317.34
8.1.30.0030.00617.66
8.1.20.0040.00417.72
8.1.10.0040.00417.50
8.1.00.0000.00917.52
8.0.300.0040.00420.07
8.0.290.0000.00816.75
8.0.280.0030.00318.39
8.0.270.0000.00717.26
8.0.260.0030.00317.26
8.0.250.0040.00417.00
8.0.240.0030.00516.95
8.0.230.0000.00716.91
8.0.220.0070.00316.82
8.0.210.0000.00716.91
8.0.200.0030.00316.76
8.0.190.0000.00716.27
8.0.180.0030.00616.89
8.0.170.0070.00016.84
8.0.160.0070.00016.77
8.0.150.0030.00516.73
8.0.140.0060.00316.80
8.0.130.0060.00013.25
8.0.120.0070.00016.79
8.0.110.0000.00716.75
8.0.100.0040.00416.89
8.0.90.0000.00716.74
8.0.80.0150.00016.71
8.0.70.0080.00016.88
8.0.60.0000.00716.78
8.0.50.0000.00716.78
8.0.30.0100.00916.95
8.0.20.0100.00917.40
8.0.10.0040.00416.73
8.0.00.0140.00716.69
7.4.330.0030.00315.08
7.4.320.0000.00716.61
7.4.300.0090.00016.49
7.4.290.0040.00416.50
7.4.280.0040.00416.55
7.4.270.0030.00316.52
7.4.260.0070.00016.50
7.4.250.0030.00516.49
7.4.240.0040.00416.58
7.4.230.0000.00716.53
7.4.220.0120.00916.70
7.4.210.0100.00716.71
7.4.200.0070.00016.36
7.4.160.0030.01316.48
7.4.150.0090.00917.40
7.4.140.0150.00517.86
7.4.130.0130.00716.58
7.4.120.0130.00716.54
7.4.110.0130.00616.59
7.4.100.0140.00316.50
7.4.90.0030.01316.62
7.4.80.0030.01719.39
7.4.70.0030.01416.55
7.4.60.0060.01016.44
7.4.50.0040.00416.46
7.4.40.0120.00616.70
7.4.30.0080.00816.64
7.4.00.0090.00914.68
7.3.330.0050.00013.17
7.3.320.0060.00013.32
7.3.310.0050.00316.33
7.3.300.0030.00316.32
7.3.290.0090.00516.29
7.3.280.0060.01416.31
7.3.270.0070.01017.40
7.3.260.0120.00616.44
7.3.250.0110.00616.29
7.3.240.0040.01216.30
7.3.230.0100.00716.39
7.3.210.0030.01316.54
7.3.200.0070.01016.52
7.3.190.0060.01116.57
7.3.180.0100.00616.54
7.3.170.0070.01416.38
7.3.160.0060.00916.37
7.3.120.0030.01414.65
7.3.110.0090.00614.87
7.3.100.0040.01214.47
7.3.90.0000.01314.67
7.3.80.0030.01014.90
7.3.70.0000.01114.59
7.3.60.0070.00414.80
7.3.50.0080.00814.90
7.3.40.0070.00714.66
7.3.30.0060.00314.78
7.3.20.0060.00316.58
7.3.10.0060.00616.70
7.3.00.0000.01416.52
7.2.330.0130.00316.71
7.2.320.0180.00416.73
7.2.310.0080.00816.55
7.2.300.0090.00616.78
7.2.290.0100.00716.51
7.2.250.0030.01415.08
7.2.240.0060.01314.80
7.2.230.0070.00715.26
7.2.220.0030.01015.19
7.2.210.0050.00514.90
7.2.200.0120.00615.04
7.2.190.0060.00915.02
7.2.180.0040.01415.00
7.2.170.0030.01015.10
7.2.00.0120.00619.13
7.1.330.0060.00915.86
7.1.320.0060.00915.39
7.1.310.0030.00915.98
7.1.300.0060.00615.91
7.1.290.0040.00815.80
7.1.280.0000.01015.77
7.1.270.0140.00015.93
7.1.260.0130.00015.59
7.1.100.0040.00817.97
7.1.70.0070.00016.86
7.1.60.0070.01719.19
7.1.50.0240.01434.56
7.1.00.0070.07322.46
7.0.200.0000.00816.63
7.0.60.0100.04720.04
7.0.50.0030.05717.91
7.0.40.0130.07720.11
7.0.30.0100.05020.15
7.0.20.0270.05720.10
7.0.10.0100.05320.16
7.0.00.0030.04020.06
5.6.280.0000.05320.86
5.6.210.0070.03720.50
5.6.200.0130.07318.16
5.6.190.0030.07320.41
5.6.180.0570.06720.63
5.6.170.0230.04320.55
5.6.160.0000.06020.47
5.6.150.0030.06318.18
5.6.140.0100.06318.19
5.6.130.0130.07018.27
5.6.120.0230.06321.02
5.6.110.0130.05720.89
5.6.100.0070.08320.99
5.6.90.0030.09021.10
5.6.80.0070.03320.51
5.5.350.0030.08720.36
5.5.340.0070.07717.98
5.5.330.0070.06720.41
5.5.320.0300.05720.51
5.5.310.0200.04720.32
5.5.300.0070.08017.94
5.5.290.0170.06718.07
5.5.280.0070.06720.80
5.5.270.0100.04020.95
5.5.260.0130.07720.95
5.5.250.0100.07720.66
5.5.240.0030.03720.20
5.4.450.0200.05019.70
5.4.440.0130.05319.16
5.4.430.0170.05019.38
5.4.420.0330.06019.47
5.4.410.0070.06319.07
5.4.400.0100.05319.04
5.4.390.0170.06019.16
5.4.380.0100.05719.14
5.4.370.0130.06318.87
5.4.360.0170.05318.84
5.4.350.0200.05018.86
5.4.340.0070.06319.06
5.4.320.0230.04718.86
5.4.310.0170.05318.86
5.4.300.0200.05019.28
5.4.290.0170.07318.84
5.4.280.0370.05719.21
5.4.270.0130.05719.25
5.4.260.0200.05019.30
5.4.250.0130.05719.22
5.4.240.0030.06719.26
5.4.230.0130.05318.97
5.4.220.0330.05718.86
5.4.210.0230.07718.83
5.4.200.0230.06719.14
5.4.190.0170.05019.29
5.4.180.0170.05319.36
5.4.170.0100.05319.28
5.4.160.0030.06319.34
5.4.150.0170.06019.13
5.4.140.0170.06716.36
5.4.130.0100.05716.77
5.4.120.0100.05716.40
5.4.110.0200.05316.24
5.4.100.0130.05716.57
5.4.90.0230.06016.66
5.4.80.0170.06316.55
5.4.70.0270.05316.55
5.4.60.0200.04716.35
5.4.50.0030.06716.31
5.4.40.0300.06716.43
5.4.30.0230.07016.34
5.4.20.0230.05716.42

preferences:
47.12 ms | 401 KiB | 5 Q