3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->{"val"}; $this->{$val} = "whoops?"; echo "\n".$this->{$val}; } } $foo = new foo();

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)
8.3.60.0100.00718.55
8.3.50.0220.01321.91
8.3.40.0140.00718.92
8.3.30.0100.00719.01
8.3.20.0070.00020.25
8.3.10.0050.00323.57
8.3.00.0050.00519.54
8.2.180.0040.01116.75
8.2.170.0040.01122.96
8.2.160.0070.00720.40
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0130.00326.16
8.2.120.0030.00717.63
8.2.110.0060.00320.31
8.2.100.0100.00318.22
8.2.90.0090.00019.23
8.2.80.0050.00317.97
8.2.70.0060.00317.63
8.2.60.0100.00018.04
8.2.50.0040.00418.07
8.2.40.0070.00018.09
8.2.30.0030.00518.24
8.2.20.0040.00417.68
8.2.10.0060.00318.21
8.2.00.0000.00817.78
8.1.280.0070.00725.92
8.1.270.0040.00423.76
8.1.260.0090.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.77
8.1.230.0070.00319.07
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0000.01017.35
8.1.190.0050.00317.23
8.1.180.0000.00818.10
8.1.170.0030.00518.59
8.1.160.0040.00422.00
8.1.150.0040.00418.92
8.1.140.0040.00417.45
8.1.130.0000.00717.80
8.1.120.0000.00717.39
8.1.110.0000.00717.34
8.1.100.0040.00417.43
8.1.90.0000.00717.40
8.1.80.0050.00317.45
8.1.70.0000.00717.41
8.1.60.0060.00317.48
8.1.50.0050.00317.54
8.1.40.0050.00217.46
8.1.30.0030.00517.67
8.1.20.0000.00917.54
8.1.10.0040.00417.46
8.1.00.0000.00917.43
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0040.00418.45
8.0.270.0060.00317.31
8.0.260.0000.00717.17
8.0.250.0050.00316.90
8.0.240.0000.00616.98
8.0.230.0000.00816.95
8.0.220.0050.00216.89
8.0.210.0000.00616.78
8.0.200.0060.00316.60
8.0.190.0100.00017.00
8.0.180.0000.00816.93
8.0.170.0040.00416.80
8.0.160.0000.00716.83
8.0.150.0090.00316.86
8.0.140.0040.00416.75
8.0.130.0000.00713.35
8.0.120.0040.00416.85
8.0.110.0020.00516.86
8.0.100.0040.00416.75
8.0.90.0000.00716.74
8.0.80.0090.01216.82
8.0.70.0020.00516.92
8.0.60.0040.00416.88
8.0.50.0040.00416.75
8.0.30.0090.00917.20
8.0.20.0090.00917.40
8.0.10.0000.00816.97
8.0.00.0060.01116.82
7.4.330.0000.00515.00
7.4.320.0060.00016.40
7.4.300.0060.00016.64
7.4.290.0000.00716.47
7.4.280.0030.00616.50
7.4.270.0070.00016.47
7.4.260.0030.00316.55
7.4.250.0040.00416.38
7.4.240.0040.00416.55
7.4.230.0030.00316.57
7.4.220.0130.00316.59
7.4.210.0080.00516.59
7.4.200.0040.00416.59
7.4.160.0080.00816.39
7.4.150.0130.00717.40
7.4.140.0090.00817.86
7.4.130.0060.01216.47
7.4.120.0080.01116.54
7.4.110.0100.00716.46
7.4.100.0030.01316.34
7.4.90.0080.01216.54
7.4.80.0070.01419.39
7.4.70.0000.01716.40
7.4.60.0000.01716.45
7.4.50.0000.00616.62
7.4.40.0100.01316.58
7.4.30.0110.00616.36
7.4.00.0030.01014.77
7.3.330.0020.00213.45
7.3.320.0050.00013.30
7.3.310.0000.00616.25
7.3.300.0030.00316.40
7.3.290.0030.01216.38
7.3.280.0080.00816.33
7.3.270.0150.00317.40
7.3.260.0090.00916.31
7.3.250.0080.00916.33
7.3.240.0060.01616.40
7.3.230.0110.00616.39
7.3.210.0130.00416.29
7.3.200.0000.01619.39
7.3.190.0150.00916.59
7.3.180.0120.00316.30
7.3.170.0130.00216.29
7.3.160.0060.01016.49
7.3.120.0120.00314.86
7.2.330.0030.01616.48
7.2.320.0100.00616.71
7.2.310.0120.01516.80
7.2.300.0130.00416.65
7.2.290.0070.01316.63
7.2.00.0060.00919.15
7.1.100.0000.01218.17
7.1.70.0040.00717.14
7.1.60.0100.01619.70
7.1.50.0090.01217.15
7.1.00.0070.07322.43
7.0.200.0040.00416.78
7.0.140.0070.07022.00
7.0.60.0030.07319.87
7.0.50.0030.04017.86
7.0.40.0130.07320.23
7.0.30.0300.07720.06
7.0.20.0370.08720.23
7.0.10.0130.08020.05
7.0.00.0000.09020.11
5.6.280.0070.07021.08
5.6.210.0030.06720.67
5.6.200.0070.08318.16
5.6.190.0070.07720.61
5.6.180.0300.04020.39
5.6.170.0230.07320.46
5.6.160.0030.08720.50
5.6.150.0130.05318.19
5.6.140.0100.04318.20
5.6.130.0170.06718.19
5.6.120.0070.04721.09
5.6.110.0100.06020.95
5.6.100.0000.04321.00
5.6.90.0070.04021.03
5.6.80.0030.06720.39
5.5.350.0230.08320.41
5.5.340.0130.03017.99
5.5.330.0100.06320.43
5.5.320.0270.06020.31
5.5.310.0330.04320.19
5.5.300.0100.03318.04
5.5.290.0100.04017.98
5.5.280.0070.04720.73
5.5.270.0070.08720.73
5.5.260.0030.04320.73
5.5.250.0100.08320.61
5.5.240.0000.08020.23
5.4.450.0670.05719.43
5.4.440.0030.06319.55
5.4.430.0730.05019.46
5.4.420.1030.05019.38
5.4.410.0130.05018.85
5.4.400.0370.05018.77
5.4.390.0300.07018.84
5.4.380.0070.06318.79
5.4.370.0030.04018.51
5.4.360.0030.04318.43
5.4.350.0170.08212.02
5.4.340.0060.03412.02
5.4.320.0070.03612.50
5.4.310.0070.03712.50
5.4.300.0070.03612.50
5.4.290.0090.03412.50
5.4.280.0110.03012.39
5.4.270.0070.03512.39
5.4.260.0090.03412.39
5.4.250.0040.04012.39
5.4.240.0040.03712.39
5.4.230.0090.04612.39
5.4.220.0060.03512.39
5.4.210.0030.03712.39
5.4.200.0080.03512.39
5.4.190.0050.04112.38
5.4.180.0050.03712.38
5.4.170.0060.03512.39
5.4.160.0090.03212.39
5.4.150.0050.04112.39
5.4.140.0080.03812.07
5.4.130.0030.03812.06
5.4.120.0070.03912.02
5.4.110.0070.03812.02
5.4.100.0080.03712.01
5.4.90.0070.03612.02
5.4.80.0050.03812.01
5.4.70.0110.03712.01
5.4.60.0070.03812.01
5.4.50.0020.03812.01
5.4.40.0030.03711.99
5.4.30.0100.03611.99
5.4.20.0090.03612.00
5.4.10.0080.03712.00
5.4.00.0050.03611.48
5.3.290.0110.03812.80
5.3.280.0040.04612.70
5.3.270.0110.03712.72
5.3.260.0080.03912.72
5.3.250.0090.03412.71
5.3.240.0110.03412.72
5.3.230.0090.03712.71
5.3.220.0040.03812.68
5.3.210.0050.04112.68
5.3.200.0090.03412.68
5.3.190.0060.03712.68
5.3.180.0030.04012.67
5.3.170.0070.03612.67
5.3.160.0060.03712.67
5.3.150.0090.03812.67
5.3.140.0040.03812.66
5.3.130.0050.04512.66
5.3.120.0040.04012.66
5.3.110.0060.04112.66
5.3.100.0060.03612.12
5.3.90.0070.04112.10
5.3.80.0000.04312.09
5.3.70.0050.03712.09
5.3.60.0100.03812.07
5.3.50.0050.03712.02
5.3.40.0040.04112.02
5.3.30.0050.03711.98
5.3.20.0070.03611.76
5.3.10.0050.04211.73
5.3.00.0100.03611.71
5.2.170.0050.0299.21
5.2.160.0060.0319.21
5.2.150.0060.0309.21
5.2.140.0100.0249.21
5.2.130.0080.0309.18
5.2.120.0070.0269.17
5.2.110.0080.0309.18
5.2.100.0040.0319.18
5.2.90.0050.0359.18
5.2.80.0040.0309.17
5.2.70.0030.0349.17
5.2.60.0040.0419.13
5.2.50.0070.0349.09
5.2.40.0080.0289.07
5.2.30.0060.0309.05
5.2.20.0050.0289.03
5.2.10.0070.0258.94
5.2.00.0050.0298.80
5.1.60.0030.0258.08
5.1.50.0040.0258.08
5.1.40.0060.0288.06
5.1.30.0050.0258.41
5.1.20.0050.0258.44
5.1.10.0050.0258.16
5.1.00.0050.0268.16
5.0.50.0040.0206.64
5.0.40.0050.0236.50
5.0.30.0070.0286.31
5.0.20.0040.0186.28
5.0.10.0050.0186.25
5.0.00.0040.0296.25
4.4.90.0020.0164.78
4.4.80.0050.0134.75
4.4.70.0000.0194.76
4.4.60.0030.0164.75
4.4.50.0040.0154.77
4.4.40.0030.0264.71
4.4.30.0030.0164.76
4.4.20.0050.0144.84
4.4.10.0030.0154.85
4.4.00.0020.0264.76
4.3.110.0040.0144.67
4.3.100.0030.0154.67
4.3.90.0070.0104.63
4.3.80.0020.0254.58
4.3.70.0030.0144.63
4.3.60.0060.0124.63
4.3.50.0040.0154.62
4.3.40.0040.0234.54
4.3.30.0020.0163.30
4.3.20.0030.0153.28
4.3.10.0030.0153.24
4.3.00.0100.0237.16

preferences:
45.27 ms | 401 KiB | 5 Q