3v4l.org

run code in 300+ PHP versions simultaneously
e<?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->setConfigParam('aVariableName', array('one', 'two', 'three')); $aVariableName = 0; echo $this->aVariableName; var_dump($this->_aConfigParams); } public function setConfigParam( $sName, $sValue ) { if ( isset( $this->$sName ) ) { $this->$sName = $sValue; } else { $this->_aConfigParams[$sName] = $sValue; } } } $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)
8.3.60.0040.01116.75
8.3.50.0070.01122.00
8.3.40.0120.00318.95
8.3.30.0110.00419.12
8.3.20.0070.00020.29
8.3.10.0000.00823.66
8.3.00.0090.00019.51
8.2.180.0000.01818.66
8.2.170.0150.00022.96
8.2.160.0100.00320.38
8.2.150.0060.00324.18
8.2.140.0050.00324.66
8.2.130.0030.00626.16
8.2.120.0040.00422.08
8.2.110.0060.00322.44
8.2.100.0110.00017.91
8.2.90.0000.00717.75
8.2.80.0060.00317.97
8.2.70.0060.00318.05
8.2.60.0050.00318.05
8.2.50.0080.00018.10
8.2.40.0060.00321.99
8.2.30.0000.00818.03
8.2.20.0000.00817.65
8.2.10.0080.00018.05
8.2.00.0090.00017.75
8.1.280.0030.01625.92
8.1.270.0050.00324.02
8.1.260.0040.00426.35
8.1.250.0170.00028.09
8.1.240.0060.00323.80
8.1.230.0080.00419.17
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0090.00017.35
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0060.00318.65
8.1.160.0050.00222.08
8.1.150.0040.00418.66
8.1.140.0040.00417.47
8.1.130.0040.00417.86
8.1.120.0000.00717.50
8.1.110.0030.00617.51
8.1.100.0040.00417.50
8.1.90.0040.00417.43
8.1.80.0000.00717.52
8.1.70.0000.00717.37
8.1.60.0060.00617.61
8.1.50.0000.00817.49
8.1.40.0050.00317.49
8.1.30.0040.00417.62
8.1.20.0050.00217.70
8.1.10.0060.00317.61
8.1.00.0000.00717.58
8.0.300.0070.00019.86
8.0.290.0000.00716.75
8.0.280.0070.00018.47
8.0.270.0030.00317.24
8.0.260.0000.00617.20
8.0.250.0000.00716.93
8.0.240.0070.00017.08
8.0.230.0030.00416.93
8.0.220.0000.00716.87
8.0.210.0080.00016.98
8.0.200.0030.00317.10
8.0.190.0070.00017.08
8.0.180.0050.00216.91
8.0.170.0050.00216.89
8.0.160.0070.00016.93
8.0.150.0000.00716.79
8.0.140.0070.00016.95
8.0.130.0030.00313.47
8.0.120.0000.00716.83
8.0.110.0040.00417.00
8.0.100.0000.00717.09
8.0.90.0050.00217.02
8.0.80.0140.00717.01
8.0.70.0050.00217.08
8.0.60.0000.00816.86
8.0.50.0080.00016.93
8.0.30.0130.00717.08
8.0.20.0120.00917.40
8.0.10.0040.00417.07
8.0.00.0100.00716.81
7.4.330.0060.00015.00
7.4.320.0000.00716.52
7.4.300.0030.00316.50
7.4.290.0000.00816.53
7.4.280.0040.00416.44
7.4.270.0070.00016.53
7.4.260.0030.00316.53
7.4.250.0050.00216.61
7.4.240.0040.00416.64
7.4.230.0070.00016.63
7.4.220.0040.01116.41
7.4.210.0070.00816.55
7.4.200.0040.00416.51
7.4.190.0000.00716.62
7.4.160.0080.00816.61
7.4.150.0140.00417.40
7.4.140.0120.00717.86
7.4.130.0100.00716.54
7.4.120.0120.00616.53
7.4.110.0070.01116.38
7.4.100.0170.00316.43
7.4.90.0070.01016.68
7.4.80.0030.02019.39
7.4.70.0080.01116.59
7.4.60.0140.00716.71
7.4.50.0000.00816.59
7.4.40.0040.00722.77
7.4.30.0060.02016.43
7.4.00.0060.01015.24
7.3.330.0030.00313.38
7.3.320.0070.00013.21
7.3.310.0000.00716.55
7.3.300.0000.00716.28
7.3.290.0080.01216.45
7.3.280.0080.00716.47
7.3.270.0110.00717.40
7.3.260.0140.00716.60
7.3.250.0150.00516.67
7.3.240.0090.01316.42
7.3.230.0140.00716.65
7.3.210.0140.00416.67
7.3.200.0080.01619.39
7.3.190.0130.00916.63
7.3.180.0060.00916.47
7.3.170.0020.01416.39
7.3.160.0090.01516.57
7.3.120.0040.01215.02
7.2.330.0290.01216.85
7.2.320.0120.00616.80
7.2.310.0170.00016.46
7.2.300.0060.01116.82
7.2.290.0120.00616.70
7.2.60.0040.01116.95
7.2.00.0150.00718.89
7.1.200.0070.00715.72
7.1.100.0060.00618.38
7.1.70.0070.00017.09
7.1.60.0120.01219.46
7.1.50.0110.00017.01
7.1.00.0030.07722.28
7.0.200.0170.00714.71
7.0.140.0000.07722.12
7.0.60.0100.06319.97
7.0.50.0030.04017.92
7.0.40.0130.07020.05
7.0.30.0370.07020.30
7.0.20.0200.06720.25
7.0.10.0070.08320.07
7.0.00.0030.05020.20
5.6.280.0070.07021.08
5.6.210.0070.07020.52
5.6.200.0030.05018.19
5.6.190.0170.07320.59
5.6.180.0230.09020.57
5.6.170.0170.04720.45
5.6.160.0030.04020.54
5.6.150.0070.08018.12
5.6.140.0100.06318.28
5.6.130.0000.04718.21
5.6.120.0030.04020.93
5.6.110.0100.06021.13
5.6.100.0170.05721.03
5.6.90.0030.04020.88
5.6.80.0000.04320.36
5.6.70.3970.04720.36
5.5.350.0000.05720.41
5.5.340.0100.07317.99
5.5.330.0070.04320.25
5.5.320.0470.06720.27
5.5.310.0230.05320.46
5.5.300.0100.08018.13
5.5.290.0100.06017.94
5.5.280.0100.04320.81
5.5.270.0130.07020.69
5.5.260.0070.08020.77
5.5.250.0100.06320.66
5.5.240.0230.07720.22
5.4.450.0870.04719.44
5.4.440.0930.06719.59
5.4.430.0500.05719.57
5.4.420.0670.00019.21
5.4.410.0170.05318.86
5.4.400.0270.04318.53
5.4.390.0300.04018.54
5.4.380.0270.05318.75
5.4.370.0170.05018.78
5.4.360.0200.04318.46
5.4.350.0040.03912.02
5.4.340.0080.03212.02
5.4.320.0080.04512.50
5.4.310.0110.03512.50
5.4.300.0110.04212.50
5.4.290.0080.05012.48
5.4.280.0080.03712.39
5.4.270.0110.05512.38
5.4.260.0140.05112.38
5.4.250.0110.05312.39
5.4.240.0140.05012.38
5.4.230.0110.04612.38
5.4.220.0060.04012.38
5.4.210.0040.04112.38
5.4.200.0030.04412.37
5.4.190.0050.03712.38
5.4.180.0040.03812.37
5.4.170.0080.03512.38
5.4.160.0040.03912.38
5.4.150.0080.03512.38
5.4.140.0050.03812.06
5.4.130.0080.03412.05
5.4.120.0100.05012.00
5.4.110.0120.04812.00
5.4.100.0070.03712.00
5.4.90.0090.03812.00
5.4.80.0060.04212.00
5.4.70.0080.04011.99
5.4.60.0070.04511.99
5.4.50.0080.03912.00
5.4.40.0080.04011.98
5.4.30.0100.03911.98
5.4.20.0090.04911.98
5.4.10.0080.05011.98
5.4.00.0080.03911.47
5.3.290.0090.04512.80
5.3.280.0060.05312.71
5.3.270.0070.03912.72
5.3.260.0050.04212.72
5.3.250.0100.05212.72
5.3.240.0100.05112.72
5.3.230.0100.03912.71
5.3.220.0090.05112.68
5.3.210.0100.05312.68
5.3.200.0110.05312.68
5.3.190.0050.04412.68
5.3.180.0100.03812.68
5.3.170.0060.03912.67
5.3.160.0100.03412.67
5.3.150.0080.03712.67
5.3.140.0100.05012.66
5.3.130.0100.05212.66
5.3.120.0090.05012.66
5.3.110.0060.04112.66
5.3.100.0080.04712.13
5.3.90.0060.04012.11
5.3.80.0110.05212.10
5.3.70.0110.03912.10
5.3.60.0060.04012.08
5.3.50.0040.03912.02
5.3.40.0070.03712.02
5.3.30.0040.03711.98
5.3.20.0060.03811.77
5.3.10.0070.03411.73
5.3.00.0070.03611.72
5.2.170.0070.0289.23
5.2.160.0050.0309.22
5.2.150.0080.0429.23
5.2.140.0080.0399.22
5.2.130.0060.0329.18
5.2.120.0050.0439.18
5.2.110.0070.0319.19
5.2.100.0030.0319.18
5.2.90.0080.0419.18
5.2.80.0060.0369.18
5.2.70.0030.0449.18
5.2.60.0030.0339.13
5.2.50.0050.0339.10
5.2.40.0050.0309.07
5.2.30.0030.0329.05
5.2.20.0090.0269.04
5.2.10.0080.0288.95
5.2.00.0090.0278.81
5.1.60.0050.0268.09
5.1.50.0060.0278.09
5.1.40.0050.0418.07
5.1.30.0100.0358.42
5.1.20.0070.0378.45
5.1.10.0050.0378.17
5.1.00.0120.0378.17
5.0.50.0030.0306.64
5.0.40.0030.0356.51
5.0.30.0060.0446.32
5.0.20.0080.0256.28
5.0.10.0040.0276.27
5.0.00.0080.0416.26
4.4.90.0040.0214.78
4.4.80.0040.0204.75
4.4.70.0040.0194.76
4.4.60.0020.0174.75
4.4.50.0020.0174.77
4.4.40.0040.0234.71
4.4.30.0030.0164.75
4.4.20.0040.0164.84
4.4.10.0050.0204.85
4.4.00.0040.0314.76
4.3.110.0040.0204.67
4.3.100.0030.0194.67
4.3.90.0050.0184.63
4.3.80.0050.0234.59
4.3.70.0050.0134.63
4.3.60.0030.0154.63
4.3.50.0020.0174.63
4.3.40.0060.0284.54
4.3.30.0030.0213.30
4.3.20.0040.0173.29
4.3.10.0030.0153.25
4.3.00.0030.0208.05

preferences:
55.17 ms | 401 KiB | 5 Q