3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { public function setConfigParam( $sName, $sValue ) { if ( isset( $this->$sName ) ) { $this->$sName = $sValue; } else { $this->_aConfigParams[$sName] = $sValue; } } 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"}; setConfigParam('aVariableName', array('one', 'two', 'three')); echo $this->$aVariableName; } } $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)
8.3.60.0000.01416.75
8.3.50.0070.01221.96
8.3.40.0110.00718.75
8.3.30.0080.00619.27
8.3.20.0070.00020.39
8.3.10.0000.00923.52
8.3.00.0030.00619.51
8.2.180.0150.00716.50
8.2.170.0110.00422.96
8.2.160.0130.00020.44
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0000.00722.25
8.2.110.0100.00022.11
8.2.100.0070.00417.87
8.2.90.0000.00819.13
8.2.80.0050.00518.05
8.2.70.0070.01017.13
8.2.60.0040.00417.93
8.2.50.0050.00718.07
8.2.40.0080.00017.97
8.2.30.0030.00617.95
8.2.20.0040.00417.63
8.2.10.0000.00818.01
8.2.00.0060.00317.73
8.1.280.0090.00625.92
8.1.270.0050.00324.02
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0080.00023.63
8.1.230.0070.00419.04
8.1.220.0000.00717.79
8.1.210.0040.00418.77
8.1.200.0030.00617.48
8.1.190.0040.00417.65
8.1.180.0060.00318.10
8.1.170.0000.00818.55
8.1.160.0000.00721.96
8.1.150.0000.00718.65
8.1.140.0000.01017.47
8.1.130.0040.00417.84
8.1.120.0000.00817.52
8.1.110.0030.00717.54
8.1.100.0050.00517.55
8.1.90.0040.00417.51
8.1.80.0030.00317.49
8.1.70.0070.00017.37
8.1.60.0100.00017.56
8.1.50.0080.00017.55
8.1.40.0050.00317.43
8.1.30.0050.00317.64
8.1.20.0040.00417.71
8.1.10.0000.00817.54
8.1.00.0000.00717.53
8.0.300.0000.00719.09
8.0.290.0050.00317.04
8.0.280.0030.00518.49
8.0.270.0000.00817.21
8.0.260.0000.00617.23
8.0.250.0040.00416.95
8.0.240.0030.00517.02
8.0.230.0000.00716.99
8.0.220.0000.00716.95
8.0.210.0000.00716.98
8.0.200.0030.00316.99
8.0.190.0030.00617.08
8.0.180.0030.00516.96
8.0.170.0000.00717.01
8.0.160.0040.00416.97
8.0.150.0040.00416.80
8.0.140.0000.00716.82
8.0.130.0000.00513.39
8.0.120.0000.00816.91
8.0.110.0000.00816.99
8.0.100.0040.00416.92
8.0.90.0050.00316.96
8.0.80.0060.00916.96
8.0.70.0080.00016.83
8.0.60.0000.00716.84
8.0.50.0000.00816.95
8.0.30.0090.01017.22
8.0.20.0090.00917.40
8.0.10.0000.00816.92
8.0.00.0090.00916.73
7.4.330.0020.00215.08
7.4.320.0040.00416.56
7.4.300.0000.00616.52
7.4.290.0000.00816.65
7.4.280.0040.00316.64
7.4.270.0040.00416.59
7.4.260.0030.00316.61
7.4.250.0050.00216.38
7.4.240.0000.00716.62
7.4.230.0030.00316.71
7.4.220.0170.00316.59
7.4.210.0070.00716.55
7.4.200.0020.00516.62
7.4.190.0030.00316.79
7.4.160.0080.01516.46
7.4.150.0110.00517.40
7.4.140.0080.01017.86
7.4.130.0120.00616.70
7.4.120.0100.00716.52
7.4.110.0060.01216.51
7.4.100.0110.01116.59
7.4.90.0000.01716.71
7.4.80.0110.01219.39
7.4.70.0070.01016.56
7.4.60.0000.01616.38
7.4.50.0000.00816.38
7.4.40.0090.00622.77
7.4.30.0130.00616.68
7.4.00.0030.01014.88
7.3.330.0020.00213.46
7.3.320.0000.00613.30
7.3.310.0030.00316.33
7.3.300.0000.00616.34
7.3.290.0030.01316.45
7.3.280.0090.00716.39
7.3.270.0050.01117.40
7.3.260.0130.00616.34
7.3.250.0110.00716.47
7.3.240.0100.00616.27
7.3.230.0060.01116.39
7.3.210.0130.00416.59
7.3.200.0090.01219.39
7.3.190.0140.00316.43
7.3.180.0100.01016.37
7.3.170.0110.00516.47
7.3.160.0060.00916.45
7.3.120.0070.00714.81
7.2.330.0190.00016.62
7.2.320.0120.00616.82
7.2.310.0080.01016.49
7.2.300.0170.00016.80
7.2.290.0030.01316.70
7.2.60.0000.01416.80
7.2.00.0110.00719.38
7.1.200.0040.00715.57
7.1.100.0080.00418.16
7.1.70.0080.00816.81
7.1.60.0150.01119.46
7.1.50.0070.00316.90
7.1.00.0030.07722.34
7.0.200.0170.00314.81
7.0.140.0000.07721.95
7.0.60.0100.07720.02
7.0.50.0070.05317.89
7.0.40.0070.07720.13
7.0.30.0270.08020.12
7.0.20.0270.06020.14
7.0.10.0170.08020.30
7.0.00.0100.08320.33
5.6.280.0000.07721.10
5.6.210.0030.04720.76
5.6.200.0200.07018.20
5.6.190.0100.05720.52
5.6.180.0270.04020.48
5.6.170.0230.07020.48
5.6.160.0100.08020.50
5.6.150.0070.08018.19
5.6.140.0070.08718.15
5.6.130.0030.06718.15
5.6.120.0030.07321.02
5.6.110.0170.08020.98
5.6.100.0070.03720.89
5.6.90.0000.09320.95
5.6.80.0030.04020.29
5.5.350.0000.08720.45
5.5.340.0070.08017.96
5.5.330.0200.06720.43
5.5.320.0370.07020.31
5.5.310.0270.05320.51
5.5.300.0100.03017.98
5.5.290.0070.06318.07
5.5.280.0100.03720.74
5.5.270.0070.04020.77
5.5.260.0070.04020.73
5.5.250.0100.08020.59
5.5.240.0200.07720.11
5.4.450.0700.03719.57
5.4.440.0970.03719.16
5.4.430.1070.04319.40
5.4.420.0300.03019.62
5.4.410.1300.03319.44
5.4.400.1330.03319.09
5.4.390.0530.03319.22
5.4.380.0430.04018.57
5.4.370.0400.05318.79
5.4.360.0430.05318.70
5.4.350.0370.08018.61
5.4.340.0370.06018.50
5.4.320.0080.03412.50
5.4.310.0050.04612.50
5.4.300.0070.04012.50
5.4.290.0030.04112.49
5.4.280.0040.03812.38
5.4.270.0060.04712.38
5.4.260.0080.04312.39
5.4.250.0110.03512.38
5.4.240.0060.04012.38
5.4.230.0070.05212.38
5.4.220.0140.04712.37
5.4.210.0130.05712.38
5.4.200.0090.05512.37
5.4.190.0070.03812.37
5.4.180.0040.04812.37
5.4.170.0070.03812.38
5.4.160.0070.03512.38
5.4.150.0080.05012.38
5.4.140.0140.05612.05
5.4.130.0090.04912.05
5.4.120.0090.03912.01
5.4.110.0040.04912.00
5.4.100.0070.04012.00
5.4.90.0110.04012.00
5.4.80.0070.04612.00
5.4.70.0150.04012.00
5.4.60.0070.04812.00
5.4.50.0080.05212.00
5.4.40.0080.03811.99
5.4.30.0080.03411.98
5.4.20.0100.03211.98
5.4.10.0030.03811.98
5.4.00.0060.03611.47
5.3.290.0130.03712.80
5.3.280.0140.04212.71
5.3.270.0080.04612.73
5.3.260.0080.05812.72
5.3.250.0090.05412.72
5.3.240.0130.06212.72
5.3.230.0090.05112.71
5.3.220.0090.05712.68
5.3.210.0130.04412.68
5.3.200.0130.04712.68
5.3.190.0070.05612.68
5.3.180.0100.05212.67
5.3.170.0110.05212.67
5.3.160.0060.05512.67
5.3.150.0100.05112.67
5.3.140.0110.03612.66
5.3.130.0080.04312.66
5.3.120.0110.03812.66
5.3.110.0050.05312.66
5.3.100.0110.04912.13
5.3.90.0130.04912.11
5.3.80.0110.04712.11
5.3.70.0140.04612.11
5.3.60.0120.05312.09
5.3.50.0120.05512.03
5.3.40.0060.05512.04
5.3.30.0070.05311.99
5.3.20.0100.03511.77
5.3.10.0060.04311.74
5.3.00.0070.03611.73
5.2.170.0060.0309.23
5.2.160.0050.0309.23
5.2.150.0030.0329.23
5.2.140.0060.0319.23
5.2.130.0060.0349.19
5.2.120.0070.0309.19
5.2.110.0090.0299.19
5.2.100.0040.0389.19
5.2.90.0070.0299.18
5.2.80.0030.0359.18
5.2.70.0040.0339.18
5.2.60.0080.0459.14
5.2.50.0070.0439.11
5.2.40.0120.0399.09
5.2.30.0030.0339.06
5.2.20.0100.0259.05
5.2.10.0060.0358.95
5.2.00.0120.0468.82
5.1.60.0050.0378.10
5.1.50.0050.0358.09
5.1.40.0050.0388.07
5.1.30.0070.0378.43
5.1.20.0030.0318.45
5.1.10.0050.0268.17
5.1.00.0070.0248.18
5.0.50.0020.0236.64
5.0.40.0030.0216.52
5.0.30.0040.0326.32
5.0.20.0020.0226.29
5.0.10.0030.0226.27
5.0.00.0030.0326.27
4.4.90.0070.0204.78
4.4.80.0040.0154.75
4.4.70.0030.0224.75
4.4.60.0060.0164.76
4.4.50.0030.0174.77
4.4.40.0030.0314.71
4.4.30.0040.0154.76
4.4.20.0040.0174.84
4.4.10.0040.0234.85
4.4.00.0040.0274.76
4.3.110.0020.0184.67
4.3.100.0070.0134.67
4.3.90.0030.0154.63
4.3.80.0030.0254.59
4.3.70.0040.0144.63
4.3.60.0050.0194.63
4.3.50.0050.0184.63
4.3.40.0040.0244.53
4.3.30.0030.0183.30
4.3.20.0020.0173.28
4.3.10.0040.0203.24
4.3.00.0000.01313.47

preferences:
50.51 ms | 401 KiB | 5 Q