3v4l.org

run code in 300+ PHP versions simultaneously
<?php class ABase { const I_AM_CONSTANT = 'shazam'; private static $instance = null; public function getInstance() { if(self::$instance == null) { self::$instance = new ABase(); } } private function __construct() { } } class B extends ABase { const I_AM_CONSTANT = 'kaboom!'; private static $instance = null; private function __construct() { } } $bInstance = B::getInstance(); echo B::I_AM_CONSTANT;

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)
8.3.40.0030.01218.82
8.3.30.0080.00618.84
8.3.20.0040.00420.36
8.3.10.0140.00021.78
8.3.00.0000.00823.70
8.2.170.0110.00422.96
8.2.160.0100.00720.44
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00719.77
8.2.120.0080.00026.35
8.2.110.0030.00721.00
8.2.100.0040.00817.93
8.2.90.0040.00419.05
8.2.80.0050.00517.97
8.2.70.0040.00417.63
8.2.60.0000.00917.89
8.2.50.0030.00618.07
8.2.40.0040.00720.39
8.2.30.0030.00519.40
8.2.20.0000.00817.69
8.2.10.0070.00318.00
8.2.00.0000.00717.91
8.1.270.0070.00723.83
8.1.260.0120.00326.35
8.1.250.0000.00828.09
8.1.240.0050.00522.34
8.1.230.0040.00719.15
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0080.00017.23
8.1.180.0090.00318.10
8.1.170.0030.00618.51
8.1.160.0000.00820.63
8.1.150.0000.00718.78
8.1.140.0040.00419.39
8.1.130.0000.00717.50
8.1.120.0000.00717.24
8.1.110.0040.00417.27
8.1.100.0000.00717.23
8.1.90.0070.00017.32
8.1.80.0080.00017.32
8.1.70.0000.00917.20
8.1.60.0080.00017.54
8.1.50.0040.00417.50
8.1.40.0040.00417.50
8.1.30.0060.00317.52
8.1.20.0000.00717.55
8.1.10.0000.00717.54
8.1.00.0030.00517.42
8.0.300.0080.00018.77
8.0.290.0000.00716.71
8.0.280.0000.00718.39
8.0.270.0000.00717.20
8.0.260.0000.00617.13
8.0.250.0020.00517.00
8.0.240.0040.00416.96
8.0.230.0030.00316.92
8.0.220.0000.00716.80
8.0.210.0000.00616.94
8.0.200.0100.00016.89
8.0.190.0000.00816.91
8.0.180.0030.00716.86
8.0.170.0000.00816.91
8.0.160.0040.00416.94
8.0.150.0000.00716.91
8.0.140.0040.00416.92
8.0.130.0000.00513.36
8.0.120.0000.00816.75
8.0.110.0000.00716.73
8.0.100.0050.00216.89
8.0.90.0070.00016.94
8.0.80.0030.01316.85
8.0.70.0000.00816.84
8.0.60.0000.00816.70
8.0.50.0040.00416.86
8.0.30.0060.01017.01
8.0.20.0130.00517.40
8.0.10.0040.00416.82
8.0.00.0080.01116.67
7.4.330.0030.00316.70
7.4.320.0000.00616.45
7.4.300.0070.00016.52
7.4.290.0030.00316.49
7.4.280.0050.00516.63
7.4.270.0030.00316.50
7.4.260.0030.00316.48
7.4.250.0080.00016.57
7.4.240.0020.00616.56
7.4.230.0030.00316.39
7.4.220.0120.00616.70
7.4.210.0060.01016.52
7.4.200.0040.00416.34
7.4.160.0110.00516.68
7.4.150.0040.01317.40
7.4.140.0090.00917.86
7.4.130.0080.00816.55
7.4.120.0100.00716.57
7.4.110.0090.00916.66
7.4.100.0040.01416.70
7.4.90.0080.00816.41
7.4.80.0150.00619.39
7.4.70.0090.00916.44
7.4.60.0100.00716.61
7.4.50.0070.00516.48
7.4.40.0040.01516.51
7.4.30.0110.00616.61
7.4.00.0110.00715.01
7.3.330.0050.00013.23
7.3.320.0000.00613.20
7.3.310.0000.00716.37
7.3.300.0040.00416.23
7.3.290.0050.01116.34
7.3.280.0080.00816.37
7.3.270.0030.01617.40
7.3.260.0160.00716.27
7.3.250.0080.00916.34
7.3.240.0080.00916.42
7.3.230.0110.00716.46
7.3.210.0140.00416.39
7.3.200.0130.00319.39
7.3.190.0050.01116.43
7.3.180.0120.00316.36
7.3.170.0030.01316.30
7.3.160.0090.00916.54
7.3.10.0070.01316.28
7.3.00.0140.00616.21
7.2.330.0070.01416.54
7.2.320.0120.00416.66
7.2.310.0190.00316.71
7.2.300.0170.00016.54
7.2.290.0120.00916.56
7.2.130.0180.00816.59
7.2.120.0140.01116.60
7.2.110.0090.00916.75
7.2.100.0160.00816.68
7.2.90.0130.01016.55
7.2.80.0150.00616.36
7.2.70.0210.01216.82
7.2.60.0090.00916.82
7.2.50.0210.01016.95
7.2.40.0100.02016.70
7.2.30.0170.00716.66
7.2.20.0080.01116.70
7.2.10.0030.00916.77
7.2.00.0050.01117.92
7.1.250.0070.00915.55
7.1.200.0000.00815.79
7.1.100.0040.00718.07
7.1.70.0000.00717.23
7.1.60.0100.01019.18
7.1.50.0080.00416.89
7.1.00.0130.06722.45
7.0.200.0000.01016.63
7.0.60.0170.07021.68
7.0.50.0030.05017.84
7.0.40.0070.04320.40
7.0.30.0330.07720.26
7.0.20.0270.05320.15
7.0.10.0030.07320.06
7.0.00.0030.04320.25
5.6.210.0070.07720.55
5.6.200.0100.05718.22
5.6.190.0170.04720.47
5.6.180.0430.08020.61
5.6.170.0330.06720.62
5.6.160.0170.07720.44
5.6.150.0130.07718.19
5.6.140.0100.06018.24
5.6.130.0130.06318.28
5.6.120.0030.04320.90
5.6.110.0130.07320.89
5.6.100.0000.08321.14
5.6.90.0100.08020.88
5.6.80.0170.06020.36
5.5.350.0130.09020.36
5.5.340.0170.07017.98
5.5.330.0000.04720.27
5.5.320.0230.04320.38
5.5.310.0200.04020.36
5.5.300.0070.07017.95
5.5.290.0200.07018.08
5.5.280.0070.08720.74
5.5.270.0030.04320.64
5.5.260.0070.06020.98
5.5.250.0030.05020.54
5.5.240.0170.07320.27

preferences:
50.24 ms | 400 KiB | 5 Q