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"}; } } $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)
8.3.40.0120.00318.92
8.3.30.0040.01119.02
8.3.20.0070.00020.20
8.3.10.0040.00423.53
8.3.00.0080.00020.88
8.2.170.0070.01422.96
8.2.160.0090.00620.32
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0160.00026.16
8.2.120.0050.00319.25
8.2.110.0090.00022.00
8.2.100.0070.00420.56
8.2.90.0040.00419.17
8.2.80.0040.00417.97
8.2.70.0030.00717.50
8.2.60.0040.00418.05
8.2.50.0030.00618.07
8.2.40.0030.00519.88
8.2.30.0040.00418.13
8.2.20.0000.00717.56
8.2.10.0080.00018.18
8.2.00.0040.00417.64
8.1.270.0040.00423.84
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0030.00722.04
8.1.230.0110.00019.16
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0040.00417.36
8.1.190.0000.00817.38
8.1.180.0000.00818.10
8.1.170.0040.00418.50
8.1.160.0050.00322.01
8.1.150.0040.00418.65
8.1.140.0040.00417.39
8.1.130.0000.00817.79
8.1.120.0070.00017.36
8.1.110.0060.00317.34
8.1.100.0030.00317.53
8.1.90.0030.00517.36
8.1.80.0050.00217.36
8.1.70.0060.00317.42
8.1.60.0060.00317.51
8.1.50.0060.00317.41
8.1.40.0080.00017.52
8.1.30.0030.00617.48
8.1.20.0030.00517.56
8.1.10.0040.00417.47
8.1.00.0000.00717.54
8.0.300.0070.00018.77
8.0.290.0060.00316.63
8.0.280.0030.00318.44
8.0.270.0030.00317.26
8.0.260.0000.00617.18
8.0.250.0040.00416.97
8.0.240.0070.00016.91
8.0.230.0040.00416.85
8.0.220.0030.00316.80
8.0.210.0000.00716.77
8.0.200.0000.00716.86
8.0.190.0000.00816.95
8.0.180.0000.00716.94
8.0.170.0000.00816.89
8.0.160.0000.00716.86
8.0.150.0040.00416.87
8.0.140.0000.01016.71
8.0.130.0030.00313.36
8.0.120.0070.00016.84
8.0.110.0070.00016.80
8.0.100.0040.00416.71
8.0.90.0050.00316.88
8.0.80.0130.00316.88
8.0.70.0000.00716.84
8.0.60.0000.00716.80
8.0.50.0070.00016.80
8.0.30.0140.00717.10
8.0.20.0060.01117.40
8.0.10.0000.00717.03
8.0.00.0100.00816.63
7.4.330.0050.00015.00
7.4.320.0030.00516.55
7.4.300.0030.00316.59
7.4.290.0000.00716.61
7.4.280.0040.00416.41
7.4.270.0030.00316.46
7.4.260.0040.00416.50
7.4.250.0020.00516.44
7.4.240.0040.00316.59
7.4.230.0070.00016.71
7.4.220.0070.01716.59
7.4.210.0110.00416.70
7.4.200.0040.00416.35
7.4.160.0100.00616.42
7.4.150.0100.00717.40
7.4.140.0100.00717.86
7.4.130.0100.01016.45
7.4.120.0070.01016.43
7.4.110.0120.00616.46
7.4.100.0100.01416.39
7.4.90.0090.00916.45
7.4.80.0060.01219.39
7.4.70.0100.00716.32
7.4.60.0090.00916.62
7.4.50.0050.00316.40
7.4.40.0040.01216.63
7.4.30.0120.00316.70
7.4.00.0090.00614.79
7.3.330.0000.00513.36
7.3.320.0000.00513.30
7.3.310.0030.00316.36
7.3.300.0070.00016.34
7.3.290.0110.00416.41
7.3.280.0100.00816.36
7.3.270.0060.01617.40
7.3.260.0110.00616.32
7.3.250.0140.00716.34
7.3.240.0190.00016.37
7.3.230.0070.01016.41
7.3.210.0070.01016.49
7.3.200.0090.00619.39
7.3.190.0150.00816.39
7.3.180.0130.00316.57
7.3.170.0090.00616.36
7.3.160.0050.01116.27
7.3.120.0040.01114.77
7.2.330.0080.01416.47
7.2.320.0070.01116.65
7.2.310.0060.01816.75
7.2.300.0130.01016.49
7.2.290.0080.00816.75
7.1.70.0030.00617.32
7.1.60.0120.01219.70
7.1.50.0100.01016.62
7.1.00.0070.07322.34
7.0.200.0000.00816.41
7.0.140.0170.06022.00
7.0.90.0070.06719.94
7.0.80.0130.03319.88
7.0.70.0100.06720.02
7.0.60.0130.07319.96
7.0.50.0030.05320.31
7.0.40.0100.07320.14
7.0.30.0070.04720.09
7.0.20.0030.04720.11
7.0.10.0030.04319.94
7.0.00.0070.05020.14
5.6.280.0070.07021.15
5.6.230.0100.03720.63
5.6.220.0030.04320.52
5.6.210.0070.06720.49
5.6.200.0070.05721.12
5.6.190.0030.04321.07
5.6.180.0030.04721.17
5.6.170.0070.06721.07
5.6.160.0070.06721.06
5.6.150.0070.03321.02
5.6.140.0030.04720.95
5.6.130.0030.06021.10
5.6.120.0100.03321.05
5.6.110.0030.04721.16
5.6.100.0030.04321.06
5.6.90.0070.04321.03
5.6.80.0000.04320.36
5.6.70.0000.04320.45
5.6.60.0100.04020.45
5.6.50.0070.03720.45
5.6.40.0070.03320.41
5.6.30.0100.02720.38
5.6.20.0100.06720.38
5.6.10.0100.05720.29
5.6.00.0070.05720.39
5.5.370.0130.04320.57
5.5.360.0170.03720.38
5.5.350.0030.04320.44
5.5.340.0030.04320.86
5.5.330.0000.04320.89
5.5.320.0070.05720.81
5.5.310.0030.06020.75
5.5.300.0100.04020.64
5.5.290.0070.04020.93
5.5.280.0030.04320.88
5.5.270.0000.04020.63
5.5.260.0030.03720.63
5.5.250.0000.06720.55
5.5.240.0000.04320.21
5.5.230.0030.04320.25
5.5.220.0000.04020.11
5.5.210.0030.04020.11
5.5.200.0000.04320.27
5.5.190.0070.03020.18
5.5.180.0000.05720.24
5.5.160.0070.07320.19
5.5.150.0030.04320.07
5.5.140.0070.04320.22
5.5.130.0070.04720.11
5.5.120.0170.07320.25
5.5.110.0070.08020.24
5.5.100.0130.04020.07
5.5.90.0100.07720.01
5.5.80.0070.05019.97
5.5.70.0100.07720.06
5.5.60.0000.08720.06
5.5.50.0100.07020.16
5.5.40.0030.05720.08
5.5.30.0030.04320.09
5.5.20.0100.07020.14
5.5.10.0070.07020.07
5.5.00.0030.08020.03
5.4.450.0030.06019.36
5.4.440.0070.05719.37
5.4.430.0030.07319.50
5.4.420.0070.04319.44
5.4.410.0100.03319.22
5.4.400.0000.03718.95
5.4.390.0030.03719.18
5.4.380.0000.04018.95
5.4.370.0130.04718.95
5.4.360.0000.04319.25
5.4.350.0000.03719.05
5.4.340.0070.07319.09
5.4.320.0100.04019.16
5.4.310.0070.07719.23
5.4.300.0100.07719.03
5.4.290.0030.08019.23
5.4.280.0130.06318.96
5.4.270.0100.05719.20
5.4.260.0070.05318.84
5.4.250.0130.07018.84
5.4.240.0030.04019.04
5.4.230.0070.08019.20
5.4.220.0100.04019.18
5.4.210.0070.07018.86
5.4.200.0170.07019.13
5.4.190.0100.06019.02
5.4.180.0100.07318.89
5.4.170.0030.06019.08
5.4.160.0070.04019.12
5.4.150.0100.07318.85
5.4.140.0070.07317.59
5.4.130.0130.07017.59
5.4.120.0070.07017.59
5.4.110.0070.08017.59
5.4.100.0070.05017.59
5.4.90.0100.07017.59
5.4.80.0100.06717.59
5.4.70.0100.07017.59
5.4.60.0070.07017.59
5.4.50.0130.06717.59
5.4.40.0100.06317.59
5.4.30.0030.08317.59
5.4.20.0030.06317.59
5.4.10.0170.06317.59
5.4.00.0030.07017.59
5.3.290.0070.05017.59
5.3.280.0130.04317.59
5.3.270.0070.08317.59
5.3.260.0130.06717.59
5.3.250.0100.03017.59
5.3.240.0100.07017.59
5.3.230.0100.07017.59
5.3.220.0130.07317.59
5.3.210.0070.04717.59
5.3.200.0070.04017.59
5.3.190.0130.07017.59
5.3.180.0070.07317.59
5.3.170.0030.04717.59
5.3.160.0070.04317.59
5.3.150.0100.05317.59
5.3.140.0200.06717.59
5.3.130.0030.08017.59
5.3.120.0030.06017.59
5.3.110.0070.07017.59
5.3.100.0030.07717.59
5.3.90.0270.06017.59
5.3.80.0070.04717.59
5.3.70.0130.07017.59
5.3.60.0100.06717.59
5.3.50.0200.05717.59
5.3.40.0100.04017.59
5.3.30.0070.03317.59
5.3.20.0070.06717.59
5.3.10.0070.07017.59
5.3.00.0070.07317.59
5.2.170.0070.06017.59
5.2.160.0000.04017.59
5.2.150.0100.02317.59
5.2.140.0030.06717.59
5.2.130.0030.04317.59
5.2.120.0100.05717.59
5.2.110.0070.04717.59
5.2.100.0070.04017.59
5.2.90.0100.05017.59
5.2.80.0070.06317.59
5.2.70.0070.06017.59
5.2.60.0070.06717.59
5.2.50.0000.07017.59
5.2.40.0130.05717.59
5.2.30.0030.05017.59
5.2.20.0070.04317.59
5.2.10.0030.06017.59
5.2.00.0030.04317.59
5.1.60.0130.03317.59
5.1.50.0070.05017.59
5.1.40.0030.04017.59
5.1.30.0000.03317.59
5.1.20.0070.03317.59
5.1.10.0070.05317.59
5.1.00.0070.03317.59
5.0.50.0030.04717.59
5.0.40.0000.05017.59
5.0.30.0030.06717.59
5.0.20.0030.04317.59
5.0.10.0100.03017.59
5.0.00.0070.05717.59
4.4.90.0030.02317.59
4.4.80.0000.03717.59
4.4.70.0000.02717.59
4.4.60.0030.03017.59
4.4.50.0030.03017.59
4.4.40.0000.05017.59
4.4.30.0000.03017.59
4.4.20.0000.03717.59
4.4.10.0000.04017.59
4.4.00.0000.05317.59
4.3.110.0030.03717.59
4.3.100.0000.02717.59
4.3.90.0030.03317.59
4.3.80.0030.05317.59
4.3.70.0030.02317.59
4.3.60.0000.03317.59
4.3.50.0000.03317.59
4.3.40.0030.04017.59
4.3.30.0000.03717.59
4.3.20.0000.03717.59
4.3.10.0030.03017.59
4.3.00.0030.02317.59

preferences:
43.54 ms | 400 KiB | 5 Q