3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test { private $var = ''; function setVar(&$input) { $this->var = &$input; } function getVar() { echo 'Var = ' . $this->var . "\n"; } } $test = new Test(); $test->setVar($string); $string = 'Hello'; $test->getVar(); $string = 'Goodbye'; $test->getVar();

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)
8.3.70.0090.00616.38
8.3.60.0040.01416.38
8.3.50.0110.00521.93
8.3.40.0100.01018.71
8.3.30.0140.00018.93
8.3.20.0000.00720.34
8.3.10.0030.00623.71
8.3.00.0040.00419.04
8.2.180.0040.01118.04
8.2.170.0090.00622.96
8.2.160.0130.00020.35
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0110.00426.16
8.2.120.0050.00222.25
8.2.110.0030.01719.14
8.2.100.0070.00417.84
8.2.90.0050.00219.09
8.2.80.0050.00317.97
8.2.70.0090.00017.38
8.2.60.0080.00017.80
8.2.50.0090.00018.07
8.2.40.0000.00819.88
8.2.30.0030.00619.93
8.2.20.0040.00417.75
8.2.10.0000.00818.11
8.2.00.0040.00417.79
8.1.280.0080.00625.92
8.1.270.0080.00022.19
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0000.01017.36
8.1.230.0170.00517.47
8.1.220.0040.00417.79
8.1.210.0000.00818.77
8.1.200.0060.00317.38
8.1.190.0030.00617.35
8.1.180.0060.00318.10
8.1.170.0000.00918.58
8.1.160.0040.00422.09
8.1.150.0040.00418.65
8.1.140.0060.00317.41
8.1.130.0000.00817.45
8.1.120.0040.00417.48
8.1.110.0040.00417.49
8.1.100.0040.00417.48
8.1.90.0070.00017.48
8.1.80.0000.00817.39
8.1.70.0000.00717.41
8.1.60.0000.00717.63
8.1.50.0000.00917.43
8.1.40.0080.00017.41
8.1.30.0050.00317.61
8.1.20.0040.00417.66
8.1.10.0050.00217.55
8.1.00.0050.00317.52
8.0.300.0000.00818.91
8.0.290.0050.00217.18
8.0.280.0070.00018.32
8.0.270.0000.00717.30
8.0.260.0030.00316.88
8.0.250.0070.00016.99
8.0.240.0000.00716.87
8.0.230.0030.00316.96
8.0.220.0030.00316.91
8.0.210.0030.00316.93
8.0.200.0030.00316.80
8.0.190.0000.00817.00
8.0.180.0050.00316.95
8.0.170.0060.00316.92
8.0.160.0040.00416.88
8.0.150.0000.00716.96
8.0.140.0020.00516.89
8.0.130.0040.00413.36
8.0.120.0070.00016.86
8.0.110.0000.00816.83
8.0.100.0070.00016.77
8.0.90.0030.00316.89
8.0.80.0080.00816.90
8.0.70.0040.00417.00
8.0.60.0070.00016.69
8.0.50.0070.00016.72
8.0.30.0120.00617.21
8.0.20.0100.00817.40
8.0.10.0040.00416.97
8.0.00.0100.01016.77
7.4.330.0050.00015.04
7.4.320.0000.00616.57
7.4.300.0030.00316.56
7.4.290.0040.00416.61
7.4.280.0000.00816.63
7.4.270.0040.00416.52
7.4.260.0000.00716.36
7.4.250.0070.00016.55
7.4.240.0020.00516.51
7.4.230.0030.00316.39
7.4.220.0060.01316.57
7.4.210.0060.00816.58
7.4.200.0000.00716.62
7.4.190.0030.00316.77
7.4.160.0120.00916.46
7.4.150.0000.01617.40
7.4.140.0070.01117.86
7.4.130.0140.00516.49
7.4.120.0090.01016.44
7.4.110.0130.00516.54
7.4.100.0110.00716.48
7.4.90.0060.00916.54
7.4.80.0140.00419.39
7.4.70.0100.00616.49
7.4.60.0030.01316.56
7.4.50.0000.00816.50
7.4.40.0000.01616.31
7.4.30.0160.00316.66
7.4.00.0030.00614.60
7.3.330.0060.00013.37
7.3.320.0030.00313.29
7.3.310.0000.00816.31
7.3.300.0070.00016.27
7.3.290.0100.01016.29
7.3.280.0080.00916.31
7.3.270.0150.00317.40
7.3.260.0070.01016.22
7.3.250.0150.00616.40
7.3.240.0120.00616.55
7.3.230.0110.00616.39
7.3.210.0160.00016.38
7.3.200.0030.01419.39
7.3.190.0160.00616.45
7.3.180.0120.00316.28
7.3.170.0090.00616.27
7.3.160.0000.01616.60
7.3.120.0060.01014.77
7.2.330.0200.00316.69
7.2.320.0130.01016.47
7.2.310.0110.00716.42
7.2.300.0070.01016.43
7.2.290.0130.00416.82
7.2.60.0070.00716.65
7.2.00.0080.00819.54
7.1.200.0000.01515.58
7.1.100.0030.01018.26
7.1.70.0000.00717.14
7.1.60.0070.01419.46
7.1.50.0040.00817.00
7.1.00.0030.08022.35
7.0.200.0040.00416.46
7.0.140.0000.07722.15
7.0.70.0000.07721.93
7.0.60.0070.06021.82
7.0.50.0030.08322.13
7.0.40.0070.07020.19
7.0.30.0100.08020.02
7.0.20.0070.08320.14
7.0.10.0100.06320.10
7.0.00.0000.09319.99
5.6.280.0000.07720.93
5.6.220.0070.07720.68
5.6.210.0030.07720.48
5.6.200.0000.04320.96
5.6.190.0070.05321.02
5.6.180.0130.06021.05
5.6.170.0130.07021.14
5.6.160.0070.08321.09
5.6.150.0100.09321.14
5.6.140.0030.08721.17
5.6.130.0030.06721.09
5.6.120.0070.06321.06
5.6.110.0070.07721.07
5.6.100.0070.07320.93
5.6.90.0000.09321.00
5.6.80.0100.03720.53
5.6.70.0030.08020.49
5.6.60.0130.07020.39
5.6.50.0030.08320.41
5.6.40.0000.08320.32
5.6.30.0070.03720.32
5.6.20.0070.07020.39
5.6.10.0030.05020.29
5.6.00.0000.07320.29
5.5.360.0130.07720.45
5.5.350.0000.05320.45
5.5.340.0000.05020.79
5.5.330.0030.06320.75
5.5.320.0000.06320.90
5.5.310.0000.08020.83
5.5.300.0070.08020.84
5.5.290.0070.08720.87
5.5.280.0130.07720.61
5.5.270.0000.09020.84
5.5.260.0100.07320.73
5.5.250.0100.07720.55
5.5.240.0030.06720.30
5.5.230.0070.08020.14
5.5.220.0030.08320.02
5.5.210.0070.07320.01
5.5.200.0100.07320.22
5.5.190.0130.07020.13
5.5.180.0000.04320.23
5.5.160.0070.04020.28
5.5.150.0030.07720.21
5.5.140.0070.08020.12
5.5.130.0130.07020.15
5.5.120.0000.05020.12
5.5.110.0070.08020.18
5.5.100.0030.06019.98
5.5.90.0130.06720.00
5.5.80.0100.04320.17
5.5.70.0070.08020.06
5.5.60.0070.04719.95
5.5.50.0030.07019.96
5.5.40.0030.06019.93
5.5.30.0170.07320.13
5.5.20.0070.05720.04
5.5.10.0000.08020.04
5.5.00.0030.08320.10
5.4.450.0100.07719.48
5.4.440.0000.06019.27
5.4.430.0030.08019.36
5.4.420.0000.05019.21
5.4.410.0000.05019.44
5.4.400.0030.06719.12
5.4.390.0000.08318.92
5.4.380.0030.07718.85
5.4.370.0030.05018.86
5.4.360.0100.07719.14
5.4.350.0000.04718.95
5.4.340.0070.06019.18
5.4.320.0000.06019.02
5.4.310.0030.06019.04
5.4.300.0030.06719.02
5.4.290.0070.04318.86
5.4.280.0030.07319.13
5.4.270.0070.04719.14
5.4.260.0030.08018.84
5.4.250.0030.06318.84
5.4.240.0000.05719.04
5.4.230.0030.04019.08
5.4.220.0070.07719.04
5.4.210.0030.07718.87
5.4.200.0100.06019.17
5.4.190.0070.05019.17
5.4.180.0030.07018.89
5.4.170.0030.07319.11
5.4.160.0070.06319.15
5.4.150.0030.07718.97
5.4.140.0000.07716.41
5.4.130.0070.07716.42
5.4.120.0030.07316.38
5.4.110.0000.05716.39
5.4.100.0070.07316.46
5.4.90.0100.04716.52
5.4.80.0070.06016.33
5.4.70.0070.06716.43
5.4.60.0000.05716.36
5.4.50.0100.07016.53
5.4.40.0070.05316.45
5.4.30.0030.07316.41
5.4.20.0070.04016.23
5.4.10.0030.07716.45
5.4.00.0070.03315.82
5.3.290.0030.04715.82
5.3.280.0000.04015.82
5.3.270.0030.07715.82
5.3.260.0070.07715.82
5.3.250.0070.07715.82
5.3.240.0070.04315.82
5.3.230.0000.07715.82
5.3.220.0030.05715.82
5.3.210.0000.08015.82
5.3.200.0030.07015.82
5.3.190.0030.07715.82
5.3.180.0070.07015.82
5.3.170.0030.07315.82
5.3.160.0100.06315.82
5.3.150.0000.06715.82
5.3.140.0030.07015.82
5.3.130.0000.04715.82
5.3.120.0030.06315.82
5.3.110.0070.07315.82
5.3.100.0030.07715.82
5.3.90.0070.06015.82
5.3.80.0030.06315.82
5.3.70.0000.08015.82
5.3.60.0170.06315.82
5.3.50.0100.03315.82
5.3.40.0070.04715.82
5.3.30.0030.06015.82
5.3.20.0030.06015.82
5.3.10.0030.05015.82
5.3.00.0000.04315.82
5.2.170.0000.06715.82
5.2.160.0000.06015.82
5.2.150.0100.05715.82
5.2.140.0100.05715.82
5.2.130.0030.06015.82
5.2.120.0030.06015.82
5.2.110.0070.06015.82
5.2.100.0000.03715.82
5.2.90.0030.06315.82
5.2.80.0000.06715.82
5.2.70.0030.06015.82
5.2.60.0030.06015.82
5.2.50.0000.06315.82
5.2.40.0100.05315.82
5.2.30.0030.06315.82
5.2.20.0070.05715.82
5.2.10.0000.06015.82
5.2.00.0070.06315.82
5.1.60.0030.04715.82
5.1.50.0070.05015.82
5.1.40.0030.05015.82
5.1.30.0030.05015.82
5.1.20.0030.05715.82
5.1.10.0070.03715.82
5.1.00.0000.04015.82
5.0.50.0070.03715.82
5.0.40.0070.01315.82
5.0.30.0000.04715.82
5.0.20.0100.03715.82
5.0.10.0000.04715.82
5.0.00.0000.05715.82
4.4.90.0030.03315.82
4.4.80.0000.02315.82
4.4.70.0000.03715.82
4.4.60.0030.02715.82
4.4.50.0000.03715.82
4.4.40.0000.05315.82
4.4.30.0000.03015.82
4.4.20.0030.02715.82
4.4.10.0030.01315.82
4.4.00.0000.05715.82
4.3.110.0000.03315.82
4.3.100.0000.01715.82
4.3.90.0000.01315.82
4.3.80.0100.04715.82
4.3.70.0030.03015.82
4.3.60.0070.02715.82
4.3.50.0000.02315.82
4.3.40.0000.03315.82
4.3.30.0000.01715.82
4.3.20.0030.03315.82
4.3.10.0030.03315.82
4.3.00.0030.03315.82

preferences:
44.92 ms | 401 KiB | 5 Q