3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $p1 = "secret"; public function B() { var_dump($this); //$this = test; var_dump($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)
8.3.70.0070.01018.56
8.3.60.0070.00716.50
8.3.50.0170.00122.84
8.3.40.0090.00618.66
8.3.30.0110.00418.89
8.3.20.0000.00720.04
8.3.10.0040.00423.52
8.3.00.0050.00319.26
8.2.180.0090.00616.38
8.2.170.0070.00722.96
8.2.160.0000.01320.47
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0030.00520.97
8.2.110.0090.00022.08
8.2.100.0110.00017.59
8.2.90.0040.00418.91
8.2.80.0030.00517.97
8.2.70.0000.00817.50
8.2.60.0050.00317.80
8.2.50.0040.00418.07
8.2.40.0000.00818.16
8.2.30.0030.00517.87
8.2.20.0000.00717.60
8.2.10.0080.00017.80
8.2.00.0080.00017.55
8.1.280.0080.00825.92
8.1.270.0040.00423.78
8.1.260.0000.00726.35
8.1.250.0070.00728.09
8.1.240.0070.00323.71
8.1.230.0050.00519.15
8.1.220.0060.00317.74
8.1.210.0030.00518.77
8.1.200.0040.00417.35
8.1.190.0030.00617.23
8.1.180.0040.00418.10
8.1.170.0030.00618.49
8.1.160.0070.00022.03
8.1.150.0000.00718.89
8.1.140.0030.00517.49
8.1.130.0030.00317.70
8.1.120.0040.00417.45
8.1.110.0000.00817.52
8.1.100.0030.00417.37
8.1.90.0050.00217.51
8.1.80.0030.00317.48
8.1.70.0000.00717.35
8.1.60.0030.00617.45
8.1.50.0040.00417.54
8.1.40.0000.00817.55
8.1.30.0050.00317.69
8.1.20.0000.00717.66
8.1.10.0060.00317.61
8.1.00.0000.00717.44
8.0.300.0000.00818.77
8.0.290.0040.00416.63
8.0.280.0030.00318.32
8.0.270.0000.00717.14
8.0.260.0060.00017.20
8.0.250.0000.00717.05
8.0.240.0000.00817.04
8.0.230.0080.00017.00
8.0.220.0000.00716.88
8.0.210.0070.00016.97
8.0.200.0020.00516.97
8.0.190.0070.00317.04
8.0.180.0050.00216.90
8.0.170.0050.00216.84
8.0.160.0040.00417.07
8.0.150.0040.00416.85
8.0.140.0040.00416.99
8.0.130.0030.00313.45
8.0.120.0000.00716.91
8.0.110.0070.00016.98
8.0.100.0040.00416.77
8.0.90.0040.00417.00
8.0.80.0070.01016.89
8.0.70.0000.00817.02
8.0.60.0000.00816.97
8.0.50.0000.00716.93
8.0.30.0150.00817.17
8.0.20.0020.01617.40
8.0.10.0040.00417.07
8.0.00.0140.00416.68
7.4.330.0050.00015.02
7.4.320.0000.00616.59
7.4.300.0060.00016.61
7.4.290.0050.00216.62
7.4.280.0070.00016.62
7.4.270.0070.00016.58
7.4.260.0000.00716.50
7.4.250.0000.00716.44
7.4.240.0020.00616.53
7.4.230.0000.00716.55
7.4.220.0130.01416.57
7.4.210.0060.01016.52
7.4.200.0040.00416.51
7.4.160.0160.00016.44
7.4.150.0140.00317.40
7.4.140.0120.00617.86
7.4.130.0080.01016.61
7.4.120.0070.01016.48
7.4.110.0180.00016.61
7.4.100.0130.01016.64
7.4.90.0040.01316.40
7.4.80.0140.00719.39
7.4.70.0130.00516.56
7.4.60.0060.01016.64
7.4.50.0050.00316.66
7.4.40.0060.01016.51
7.4.30.0050.01016.66
7.4.00.0060.00614.88
7.3.330.0050.00013.41
7.3.320.0000.00513.20
7.3.310.0070.00016.38
7.3.300.0070.00016.39
7.3.290.0060.01216.37
7.3.280.0100.00616.38
7.3.270.0060.01217.40
7.3.260.0110.00716.39
7.3.250.0080.01016.34
7.3.240.0030.01316.61
7.3.230.0170.00016.39
7.3.210.0120.00416.55
7.3.200.0160.00619.39
7.3.190.0100.01316.37
7.3.180.0130.00916.46
7.3.170.0090.00616.35
7.3.160.0070.01116.40
7.3.10.0030.01416.47
7.3.00.0110.00416.63
7.2.330.0160.00616.36
7.2.320.0150.00916.34
7.2.310.0150.00316.71
7.2.300.0040.01516.48
7.2.290.0110.00616.64
7.2.130.0030.00716.69
7.2.120.0030.01216.83
7.2.110.0030.01016.84
7.2.100.0040.00816.69
7.2.90.0130.00016.97
7.2.80.0080.00616.90
7.2.70.0040.00816.87
7.2.60.0100.00516.90
7.2.50.0080.00416.93
7.2.40.0070.00316.84
7.2.30.0070.00716.87
7.2.20.0080.00417.05
7.2.10.0110.00016.57
7.2.00.0060.00518.07
7.1.250.0040.00715.71
7.1.200.0140.00715.78
7.1.100.0080.00817.91
7.1.70.0000.00717.05
7.1.60.0090.00619.40
7.1.50.0170.00716.79
7.1.00.0000.07322.34
7.0.200.0000.00716.75
7.0.140.0030.07322.07
7.0.60.0070.05720.01
7.0.50.0070.05017.84
7.0.40.0070.08319.96
7.0.30.0230.07720.12
7.0.20.0330.07320.15
7.0.10.0130.08720.12
7.0.00.0100.03320.18
5.6.280.0030.07321.07
5.6.210.0130.03020.67
5.6.200.0000.05318.15
5.6.190.0100.04320.42
5.6.180.0270.03320.48
5.6.170.0430.07020.67
5.6.160.0100.04020.48
5.6.150.0070.07318.20
5.6.140.0070.08018.18
5.6.130.0070.06718.14
5.6.120.0000.05321.01
5.6.110.0030.05321.03
5.6.100.0130.07720.99
5.6.90.0170.05021.11
5.6.80.0170.06720.38
5.5.350.0000.07720.53
5.5.340.0030.06718.09
5.5.330.0130.06020.29
5.5.320.0030.06020.31
5.5.310.0300.07320.30
5.5.300.0000.08718.08
5.5.290.0100.08017.98
5.5.280.0100.04720.96
5.5.270.0030.04320.66
5.5.260.0070.07020.64
5.5.250.0070.08020.61
5.5.240.4000.03720.15
5.4.450.0500.04019.39
5.4.440.0170.04719.55
5.4.430.0070.04019.30
5.4.420.0670.04019.21
5.4.410.0570.04019.51
5.4.400.0500.04319.32
5.4.390.0270.03319.10
5.4.380.0170.06018.47
5.4.370.0170.05018.55
5.4.360.0200.04718.53
5.4.350.0200.05018.77
5.4.340.0200.06318.59
5.4.320.0050.03812.50
5.4.310.0040.03912.50
5.4.300.0080.03812.50
5.4.290.0050.04012.50
5.4.280.0120.02912.39
5.4.270.0070.03512.39
5.4.260.0100.04512.39
5.4.250.0060.03712.39
5.4.240.0070.05312.40
5.4.230.0070.05312.39
5.4.220.0040.03812.39
5.4.210.0060.03512.39
5.4.200.0090.04612.39
5.4.190.0050.04212.38
5.4.180.0060.03912.38
5.4.170.0070.03512.39
5.4.160.0040.03912.39
5.4.150.0040.04012.38
5.4.140.0050.05212.07
5.4.130.0060.03612.05
5.4.120.0070.03412.02
5.4.110.0060.04512.01
5.4.100.0040.03712.01
5.4.90.0010.04212.02
5.4.80.0070.04012.01
5.4.70.0070.03412.01
5.4.60.0060.03512.00
5.4.50.0050.03912.01
5.4.40.0080.03312.00
5.4.30.0050.03612.00
5.4.20.0070.03411.99
5.4.10.0030.03712.00
5.4.00.0070.03811.48
5.3.290.0060.03812.80
5.3.280.0060.03712.71
5.3.270.0050.03812.72
5.3.260.0060.04912.72
5.3.250.0100.04512.71
5.3.240.0070.03612.72
5.3.230.0050.03812.71
5.3.220.0040.03912.68
5.3.210.0040.03912.68
5.3.200.0070.04212.68
5.3.190.0080.03512.68
5.3.180.0130.03712.67
5.3.170.0100.05012.67
5.3.160.0050.03812.68
5.3.150.0100.03412.67
5.3.140.0080.03512.66
5.3.130.0070.03812.66
5.3.120.0050.04112.65
5.3.110.0030.04112.66
5.3.100.0090.04012.12
5.3.90.0070.03512.10
5.3.80.0070.03712.09
5.3.70.0040.03712.09
5.3.60.0060.03512.08
5.3.50.0040.03812.02
5.3.40.0090.03212.02
5.3.30.0060.03411.98
5.3.20.0040.03611.76
5.3.10.0060.03411.73
5.3.00.0030.04111.71
5.2.170.0050.0369.21
5.2.160.0060.0459.21
5.2.150.0100.0349.22
5.2.140.0040.0329.21
5.2.130.0060.0359.18
5.2.120.0070.0299.17
5.2.110.0030.0309.18
5.2.100.0100.0319.18
5.2.90.0060.0319.18
5.2.80.0060.0349.17
5.2.70.0060.0309.17
5.2.60.0060.0299.12
5.2.50.0080.0319.09
5.2.40.0070.0329.07
5.2.30.0050.0299.05
5.2.20.0040.0309.03
5.2.10.0080.0418.94
5.2.00.0040.0308.80
5.1.60.0030.0268.09
5.1.50.0020.0278.08
5.1.40.0030.0268.07
5.1.30.0070.0238.41
5.1.20.0050.0268.44
5.1.10.0070.0228.16
5.1.00.0040.0298.16
5.0.50.0030.0216.64
5.0.40.0050.0246.50
5.0.30.0030.0316.31
5.0.20.0050.0266.27
5.0.10.0020.0226.25
5.0.00.0050.0296.25
4.4.90.0050.0134.78
4.4.80.0040.0194.75
4.4.70.0030.0154.75
4.4.60.0000.0184.75
4.4.50.0020.0214.77
4.4.40.0020.0284.71
4.4.30.0050.0124.76
4.4.20.0030.0154.84
4.4.10.0020.0174.85
4.4.00.0030.0244.76
4.3.110.0020.0164.67
4.3.100.0040.0144.67
4.3.90.0030.0144.63
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0020.0154.62
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0040.0143.30
4.3.20.0020.0193.28
4.3.10.0020.0163.23
4.3.00.0200.02015.97

preferences:
42.47 ms | 401 KiB | 5 Q