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 $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)
8.3.60.0170.00018.43
8.3.50.0140.00621.96
8.3.40.0060.00918.84
8.3.30.0080.00619.07
8.3.20.0040.00420.29
8.3.10.0000.00721.86
8.3.00.0030.00619.25
8.2.180.0140.00718.66
8.2.170.0100.00322.96
8.2.160.0030.01420.11
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0120.00626.16
8.2.120.0000.00722.23
8.2.110.0000.01120.33
8.2.100.0040.00819.76
8.2.90.0070.00418.09
8.2.80.0040.00417.97
8.2.70.0060.00617.75
8.2.60.0080.00018.04
8.2.50.0030.00618.07
8.2.40.0040.00420.07
8.2.30.0020.00518.00
8.2.20.0080.00017.75
8.2.10.0000.00718.00
8.2.00.0000.00917.79
8.1.280.0070.01025.92
8.1.270.0080.00021.92
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.14
8.1.230.0040.00720.87
8.1.220.0040.00417.79
8.1.210.0000.00718.87
8.1.200.0060.00317.35
8.1.190.0040.00417.25
8.1.180.0000.00818.10
8.1.170.0000.00918.59
8.1.160.0040.00421.94
8.1.150.0050.00318.77
8.1.140.0000.00717.42
8.1.130.0030.00517.76
8.1.120.0080.00017.39
8.1.110.0000.00817.34
8.1.100.0000.00717.35
8.1.90.0000.00717.46
8.1.80.0040.00417.39
8.1.70.0000.00717.38
8.1.60.0000.00917.60
8.1.50.0050.00317.51
8.1.40.0000.00817.47
8.1.30.0040.00417.68
8.1.20.0080.00017.61
8.1.10.0040.00417.46
8.1.00.0040.00417.52
8.0.300.0040.00420.23
8.0.290.0040.00416.63
8.0.280.0000.00718.45
8.0.270.0040.00417.13
8.0.260.0030.00317.18
8.0.250.0070.00017.01
8.0.240.0000.00817.02
8.0.230.0000.00717.00
8.0.220.0080.00016.98
8.0.210.0040.00417.02
8.0.200.0060.00017.06
8.0.190.0030.00817.05
8.0.180.0040.00417.02
8.0.170.0000.00817.04
8.0.160.0000.00816.99
8.0.150.0000.00716.84
8.0.140.0040.00416.94
8.0.130.0000.00613.34
8.0.120.0080.00016.89
8.0.110.0040.00417.00
8.0.100.0030.00516.90
8.0.90.0000.00716.87
8.0.80.0110.01016.84
8.0.70.0020.00516.99
8.0.60.0060.00317.02
8.0.50.0080.00017.00
8.0.30.0050.01817.31
8.0.20.0110.00817.40
8.0.10.0000.00716.98
8.0.00.0060.01116.72
7.4.330.0030.00315.00
7.4.320.0060.00016.56
7.4.300.0030.00316.61
7.4.290.0030.00316.50
7.4.280.0060.00316.54
7.4.270.0060.00016.41
7.4.260.0070.00016.48
7.4.250.0050.00216.56
7.4.240.0020.00516.51
7.4.230.0000.00716.42
7.4.220.0100.01616.60
7.4.210.0070.00716.58
7.4.200.0050.00316.63
7.4.160.0120.00416.46
7.4.150.0120.00617.40
7.4.140.0170.00517.86
7.4.130.0080.00816.58
7.4.120.0110.00616.42
7.4.110.0100.00716.38
7.4.100.0050.01416.34
7.4.90.0110.00616.58
7.4.80.0080.01119.39
7.4.70.0070.01016.52
7.4.60.0060.00916.62
7.4.50.0000.00916.71
7.4.40.0120.00616.63
7.4.30.0090.00916.49
7.4.00.0070.00714.95
7.3.330.0000.00513.40
7.3.320.0050.00013.36
7.3.310.0000.00716.41
7.3.300.0030.00516.44
7.3.290.0090.01216.43
7.3.280.0100.00716.46
7.3.270.0140.00317.40
7.3.260.0070.01616.60
7.3.250.0130.00316.43
7.3.240.0170.00016.62
7.3.230.0160.00716.46
7.3.210.0100.00716.40
7.3.200.0100.00719.39
7.3.190.0120.00916.46
7.3.180.0090.00916.36
7.3.170.0050.01316.49
7.3.160.0090.00616.49
7.2.330.0130.00416.76
7.2.320.0130.00316.74
7.2.310.0110.00616.63
7.2.300.0090.00616.75
7.2.290.0120.00516.60
7.1.70.0030.00517.23
7.1.60.0140.01019.11
7.1.50.0120.00917.11
7.1.00.0030.07722.49
7.0.200.0030.00716.76
7.0.140.0000.07722.16
7.0.60.0170.07319.88
7.0.50.0000.04717.86
7.0.40.0100.04720.13
7.0.30.0130.04320.06
7.0.20.0300.05720.45
7.0.10.0070.04320.43
7.0.00.0100.07320.06
5.6.280.0100.06721.13
5.6.210.0100.08020.69
5.6.200.0070.08718.15
5.6.190.0030.04320.60
5.6.180.0200.04020.50
5.6.170.1430.04720.71
5.6.160.0130.08020.51
5.6.150.0030.08718.16
5.6.140.0030.07718.11
5.6.130.0130.08018.18
5.6.120.0100.03720.99
5.6.110.0030.08721.13
5.6.100.0100.07021.11
5.6.90.0030.08021.08
5.6.80.0070.04020.40
5.5.350.0170.07720.50
5.5.340.0070.04717.97
5.5.330.0030.07720.18
5.5.320.0400.04020.36
5.5.310.0330.05020.26
5.5.300.0000.04317.98
5.5.290.0070.03718.06
5.5.280.0000.08320.77
5.5.270.0130.07720.75
5.5.260.0070.08020.87
5.5.250.0100.07720.62
5.5.240.0300.06320.19
5.4.450.0830.05019.46
5.4.440.0970.05719.69
5.4.430.0670.06319.56
5.4.420.0800.00019.36
5.4.410.0630.00019.42
5.4.400.0630.00019.09
5.4.390.0700.00019.24
5.4.380.0630.00019.16
5.4.370.0830.00019.09
5.4.360.0730.00019.13
5.4.350.0830.00019.09
5.4.340.0040.03812.02
5.4.320.0070.03612.50
5.4.310.0050.03912.50
5.4.300.0060.03712.50
5.4.290.0070.03712.50
5.4.280.0120.04412.39
5.4.270.0050.03812.39
5.4.260.0060.03812.39
5.4.250.0100.03412.39
5.4.240.0050.03812.39
5.4.230.0070.03912.38
5.4.220.0100.03512.39
5.4.210.0040.03712.39
5.4.200.0050.03812.38
5.4.190.0050.03612.38
5.4.180.0080.03412.38
5.4.170.0040.03812.39
5.4.160.0060.03612.39
5.4.150.0060.03712.39
5.4.140.0060.04112.07
5.4.130.0070.04012.05
5.4.120.0070.04612.02
5.4.110.0100.03312.01
5.4.100.0070.03412.02
5.4.90.0060.03812.02
5.4.80.0060.03712.01
5.4.70.0060.03512.01
5.4.60.0060.03612.01
5.4.50.0060.03912.01
5.4.40.0060.04312.00
5.4.30.0070.03812.00
5.4.20.0060.03512.00
5.4.10.0080.03811.99
5.4.00.0070.03711.48
5.3.290.0070.03812.80
5.3.280.0060.03812.71
5.3.270.0100.03812.72
5.3.260.0040.04112.72
5.3.250.0070.03512.72
5.3.240.0060.03912.72
5.3.230.0090.03512.71
5.3.220.0090.03712.68
5.3.210.0050.04012.68
5.3.200.0080.03612.68
5.3.190.0070.04112.68
5.3.180.0100.03712.68
5.3.170.0070.03712.67
5.3.160.0040.03812.67
5.3.150.0070.03912.67
5.3.140.0050.04912.66
5.3.130.0080.03612.66
5.3.120.0070.03612.66
5.3.110.0040.04012.65
5.3.100.0070.04212.12
5.3.90.0110.03312.10
5.3.80.0060.04112.09
5.3.70.0060.03712.09
5.3.60.0040.04012.07
5.3.50.0070.03512.02
5.3.40.0050.03612.02
5.3.30.0060.03511.98
5.3.20.0100.04511.77
5.3.10.0050.03611.73
5.3.00.0070.03511.71
5.2.170.0040.0309.22
5.2.160.0020.0329.22
5.2.150.0040.0439.22
5.2.140.0070.0379.22
5.2.130.0020.0319.18
5.2.120.0020.0309.18
5.2.110.0040.0289.18
5.2.100.0050.0319.18
5.2.90.0090.0339.18
5.2.80.0050.0299.17
5.2.70.0060.0299.17
5.2.60.0070.0309.13
5.2.50.0060.0299.10
5.2.40.0090.0309.07
5.2.30.0060.0329.04
5.2.20.0080.0319.03
5.2.10.0030.0348.94
5.2.00.0040.0308.80
5.1.60.0040.0248.08
5.1.50.0040.0258.08
5.1.40.0050.0298.07
5.1.30.0050.0278.41
5.1.20.0040.0288.43
5.1.10.0090.0268.16
5.1.00.0020.0278.16
5.0.50.0040.0196.64
5.0.40.0040.0196.50
5.0.30.0040.0346.31
5.0.20.0030.0216.28
5.0.10.0060.0176.26
5.0.00.0020.0326.25
4.4.90.0030.0154.77
4.4.80.0020.0164.75
4.4.70.0020.0164.75
4.4.60.0000.0184.75
4.4.50.0040.0134.77
4.4.40.0020.0254.71
4.4.30.0040.0144.76
4.4.20.0020.0174.85
4.4.10.0050.0134.85
4.4.00.0040.0234.76
4.3.110.0020.0164.67
4.3.100.0020.0184.67
4.3.90.0020.0164.64
4.3.80.0010.0264.58
4.3.70.0030.0144.63
4.3.60.0030.0154.63
4.3.50.0020.0164.63
4.3.40.0020.0254.54
4.3.30.0020.0153.30
4.3.20.0020.0163.28
4.3.10.0020.0153.24
4.3.00.0130.0207.43

preferences:
48.78 ms | 401 KiB | 5 Q