3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $p1 = "secret"; public function B() { var_dump($this); //$this = test; $this_var = 'test'; var_dump($this_var); ${'t' . 'his'} = 'hidden'; // works var_dump($this); var_dump($GLOBALS['this']); // class is global but $this is not since only refers to this particular object. $GLOBALS['this'] = 'lovely'; var_dump($this, $GLOBALS['this']); echo "{$GLOBALS['this']} $this {$this->p1}"; } } $a = new A; $a->B();

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)
8.3.60.0070.00716.75
8.3.50.0090.00722.83
8.3.40.0080.01218.48
8.3.30.0070.00718.82
8.3.20.0050.00220.34
8.3.10.0040.00423.59
8.3.00.0000.00819.24
8.2.180.0090.00616.50
8.2.170.0130.00722.96
8.2.160.0100.00320.46
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00020.88
8.2.110.0060.00322.14
8.2.100.0060.00617.67
8.2.90.0000.00819.09
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0050.00317.79
8.2.50.0000.00818.07
8.2.40.0000.00818.09
8.2.30.0040.00417.93
8.2.20.0040.00417.43
8.2.10.0000.00717.98
8.2.00.0080.00017.53
8.1.280.0040.01125.92
8.1.270.0040.00423.63
8.1.260.0040.00426.35
8.1.250.0110.00728.09
8.1.240.0060.00323.88
8.1.230.0080.00319.15
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0000.00917.48
8.1.190.0040.00417.13
8.1.180.0000.00818.10
8.1.170.0030.00718.46
8.1.160.0040.00421.89
8.1.150.0000.00718.89
8.1.140.0050.00317.50
8.1.130.0070.00017.84
8.1.120.0040.00417.51
8.1.110.0080.00017.49
8.1.100.0000.00717.37
8.1.90.0030.00617.35
8.1.80.0000.00717.50
8.1.70.0070.00017.38
8.1.60.0090.00017.64
8.1.50.0000.00717.51
8.1.40.0030.00517.40
8.1.30.0080.00017.55
8.1.20.0050.00217.56
8.1.10.0040.00417.50
8.1.00.0000.00817.36
8.0.300.0070.00018.77
8.0.290.0000.00716.75
8.0.280.0070.00018.49
8.0.270.0080.00017.39
8.0.260.0000.00617.21
8.0.250.0000.00716.94
8.0.240.0040.00417.05
8.0.230.0050.00317.01
8.0.220.0040.00416.89
8.0.210.0030.00317.01
8.0.200.0000.00617.04
8.0.190.0050.00516.94
8.0.180.0050.00217.02
8.0.170.0000.00816.98
8.0.160.0080.00016.96
8.0.150.0020.00516.87
8.0.140.0040.00416.97
8.0.130.0000.00613.42
8.0.120.0000.00816.89
8.0.110.0000.00716.95
8.0.100.0040.00416.77
8.0.90.0030.00316.99
8.0.80.0090.00616.89
8.0.70.0000.00716.95
8.0.60.0040.00416.88
8.0.50.0070.00016.86
8.0.30.0080.01517.11
8.0.20.0130.00917.40
8.0.10.0070.00017.04
8.0.00.0090.01016.78
7.4.330.0050.00015.00
7.4.320.0030.00316.62
7.4.300.0000.00616.43
7.4.290.0000.00716.51
7.4.280.0040.00416.61
7.4.270.0030.00316.61
7.4.260.0040.00416.53
7.4.250.0040.00416.48
7.4.240.0000.00716.51
7.4.230.0070.00016.64
7.4.220.0200.00716.51
7.4.210.0090.00616.70
7.4.200.0070.00016.36
7.4.160.0120.00416.66
7.4.150.0050.01417.40
7.4.140.0060.01117.86
7.4.130.0050.01416.61
7.4.120.0090.00816.58
7.4.110.0160.00616.54
7.4.100.0160.00616.62
7.4.90.0150.00416.36
7.4.80.0150.00919.39
7.4.70.0060.01016.42
7.4.60.0040.01316.74
7.4.50.0000.00816.50
7.4.40.0090.00916.49
7.4.30.0080.00816.28
7.4.00.0070.00715.19
7.3.330.0030.00313.34
7.3.320.0050.00013.42
7.3.310.0060.00016.48
7.3.300.0070.00016.30
7.3.290.0130.00716.36
7.3.280.0080.00916.41
7.3.270.0120.00617.40
7.3.260.0080.00816.35
7.3.250.0110.00616.58
7.3.240.0110.00516.36
7.3.230.0080.00916.49
7.3.210.0050.01116.44
7.3.200.0120.00619.39
7.3.190.0120.00916.62
7.3.180.0030.01616.42
7.3.170.0090.00616.47
7.3.160.0070.01016.61
7.2.330.0050.01816.36
7.2.320.0060.01816.61
7.2.310.0140.00316.62
7.2.300.0070.01116.54
7.2.290.0100.00716.66
7.2.60.0040.01116.86
7.2.00.0000.00919.20
7.1.200.0110.00415.44
7.1.100.0040.00718.33
7.1.70.0000.00817.05
7.1.60.0070.01019.40
7.1.50.0090.00616.96
7.1.00.0000.08022.35
7.0.200.0080.00016.77
7.0.140.0100.06722.09
7.0.60.0070.07319.91
7.0.50.0070.04317.81
7.0.40.0000.04720.09
7.0.30.0270.06720.09
7.0.20.0370.06020.30
7.0.10.0070.05720.12
7.0.00.0070.04020.16
5.6.280.0030.07021.10
5.6.210.0030.04020.71
5.6.200.0000.09318.29
5.6.190.0100.06320.61
5.6.180.0230.03720.50
5.6.170.0370.08320.50
5.6.160.0030.06320.54
5.6.150.0070.03718.16
5.6.140.0170.06018.28
5.6.130.0170.06318.28
5.6.120.0100.07321.12
5.6.110.0030.08720.99
5.6.100.0070.08721.03
5.6.90.0030.08020.88
5.6.80.0100.07020.53
5.5.350.0030.07020.38
5.5.340.0130.06018.07
5.5.330.0100.05020.43
5.5.320.0000.04720.32
5.5.310.0330.05720.30
5.5.300.0070.08317.92
5.5.290.0030.07717.95
5.5.280.0100.08320.85
5.5.270.0030.04020.64
5.5.260.0070.04020.96
5.5.250.0000.07020.79
5.5.240.4100.03720.07
5.4.450.0400.04319.57
5.4.440.0600.03719.64
5.4.430.0370.03719.48
5.4.420.0300.03719.56
5.4.410.0600.04019.42
5.4.400.0470.03319.14
5.4.390.0230.04018.98
5.4.380.0230.06018.75
5.4.370.0200.06018.57
5.4.360.0230.05318.73
5.4.350.0200.05318.53
5.4.340.0270.06718.47
5.4.320.0060.04112.50
5.4.310.0050.04712.50
5.4.300.0050.03712.50
5.4.290.0070.03712.50
5.4.280.0080.03312.40
5.4.270.0060.03512.40
5.4.260.0070.04112.40
5.4.250.0060.03612.39
5.4.240.0040.04012.39
5.4.230.0050.04212.39
5.4.220.0100.04212.39
5.4.210.0050.04912.39
5.4.200.0070.03912.39
5.4.190.0050.04412.39
5.4.180.0040.03812.38
5.4.170.0060.04012.39
5.4.160.0070.03312.39
5.4.150.0050.04312.39
5.4.140.0060.03812.07
5.4.130.0050.03812.05
5.4.120.0060.03812.02
5.4.110.0080.03512.02
5.4.100.0090.03212.02
5.4.90.0060.04012.01
5.4.80.0050.03712.01
5.4.70.0080.05212.01
5.4.60.0080.03912.01
5.4.50.0030.03712.01
5.4.40.0080.03712.00
5.4.30.0040.03612.00
5.4.20.0040.03811.99
5.4.10.0090.03411.99
5.4.00.0040.03711.48
5.3.290.0100.03912.80
5.3.280.0100.03512.71
5.3.270.0080.04112.73
5.3.260.0030.04212.72
5.3.250.0080.04012.72
5.3.240.0110.03112.72
5.3.230.0080.03612.70
5.3.220.0030.04012.68
5.3.210.0050.04012.68
5.3.200.0050.03812.68
5.3.190.0060.03912.67
5.3.180.0060.03712.68
5.3.170.0050.03712.67
5.3.160.0070.03512.68
5.3.150.0070.03512.67
5.3.140.0040.03812.66
5.3.130.0060.04012.66
5.3.120.0080.03912.65
5.3.110.0060.03712.66
5.3.100.0080.03312.12
5.3.90.0090.04012.10
5.3.80.0120.03812.09
5.3.70.0070.03512.09
5.3.60.0100.04712.08
5.3.50.0040.03912.02
5.3.40.0060.03712.02
5.3.30.0060.03811.98
5.3.20.0080.03611.76
5.3.10.0080.03411.73
5.3.00.0040.03811.71
5.2.170.0030.0359.21
5.2.160.0070.0319.22
5.2.150.0040.0319.21
5.2.140.0080.0279.21
5.2.130.0050.0289.18
5.2.120.0050.0289.17
5.2.110.0060.0299.18
5.2.100.0050.0339.18
5.2.90.0060.0299.18
5.2.80.0070.0369.17
5.2.70.0060.0329.18
5.2.60.0040.0359.13
5.2.50.0020.0339.09
5.2.40.0030.0339.07
5.2.30.0060.0339.05
5.2.20.0090.0309.03
5.2.10.0060.0388.94
5.2.00.0060.0308.81
5.1.60.0060.0238.09
5.1.50.0060.0288.09
5.1.40.0050.0238.06
5.1.30.0050.0248.41
5.1.20.0090.0298.44
5.1.10.0040.0338.16
5.1.00.0030.0348.16
5.0.50.0050.0286.64
5.0.40.0040.0236.50
5.0.30.0070.0386.31
5.0.20.0050.0176.28
5.0.10.0060.0206.25
5.0.00.0060.0386.25
4.4.90.0060.0174.78
4.4.80.0050.0124.76
4.4.70.0040.0144.76
4.4.60.0020.0214.76
4.4.50.0020.0164.77
4.4.40.0040.0244.71
4.4.30.0010.0214.76
4.4.20.0000.0214.84
4.4.10.0060.0224.85
4.4.00.0050.0234.76
4.3.110.0010.0174.67
4.3.100.0050.0194.66
4.3.90.0020.0154.64
4.3.80.0040.0314.58
4.3.70.0040.0224.63
4.3.60.0050.0144.63
4.3.50.0030.0164.63
4.3.40.0050.0254.53
4.3.30.0000.0203.30
4.3.20.0030.0163.28
4.3.10.0030.0163.23
4.3.00.0130.01715.97

preferences:
43.4 ms | 401 KiB | 5 Q