3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); $var = new StdClass(); $var->foo = 'bar'; //$this = $var; // PHP Fatal error: Cannot re-assign $this $GLOBALS['this'] = $var; var_dump($this); $var->foo = 'baz'; $foo = 'this'; $$foo = $var; var_dump($this); foo($this); function foo($this){ $GLOBALS['this']->foo = 'baw'; $$GLOBALS['foo'] = $GLOBALS['this']; var_dump($this); }

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)
8.3.60.0070.00718.43
8.3.50.0140.00721.14
8.3.40.0110.00418.58
8.3.30.0110.00418.76
8.3.20.0040.00420.34
8.3.10.0040.00421.74
8.3.00.0070.00020.21
8.2.180.0070.00718.13
8.2.170.0090.00622.96
8.2.160.0090.00620.39
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0090.00017.50
8.2.110.0040.00819.20
8.2.100.0040.00817.59
8.2.90.0040.00417.84
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00817.68
8.2.50.0050.00318.07
8.2.40.0040.00419.34
8.2.30.0040.00422.39
8.2.20.0040.00417.63
8.2.10.0040.00417.92
8.2.00.0000.00917.84
8.1.280.0080.01125.92
8.1.270.0060.01323.83
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0030.00622.39
8.1.230.0040.00721.03
8.1.220.0030.00617.74
8.1.210.0040.00418.90
8.1.200.0060.00317.10
8.1.190.0040.00416.98
8.1.180.0000.00718.10
8.1.170.0060.00318.59
8.1.160.0040.00421.94
8.1.150.0040.00418.77
8.1.140.0030.00617.29
8.1.130.0000.00717.49
8.1.120.0000.00717.29
8.1.110.0040.00417.36
8.1.100.0040.00417.39
8.1.90.0040.00417.39
8.1.80.0000.00817.36
8.1.70.0000.00717.35
8.1.60.0030.00617.36
8.1.50.0030.00517.44
8.1.40.0030.00517.29
8.1.30.0040.00417.36
8.1.20.0000.00717.50
8.1.10.0000.00717.24
8.1.00.0000.00817.26
8.0.300.0000.00719.78
8.0.290.0070.00016.75
8.0.280.0000.00718.31
8.0.270.0030.00317.16
8.0.260.0070.00017.05
8.0.250.0040.00416.88
8.0.240.0110.00016.87
8.0.230.0030.00516.78
8.0.220.0000.00716.71
8.0.210.0000.00716.83
8.0.200.0000.00716.75
8.0.190.0100.00016.80
8.0.180.0080.00016.72
8.0.170.0000.00816.89
8.0.160.0050.00216.82
8.0.150.0070.00016.74
8.0.140.0050.00316.84
8.0.130.0030.00313.31
8.0.120.0040.00416.73
8.0.110.0040.00416.77
8.0.100.0000.00716.70
8.0.90.0040.00416.65
8.0.80.0070.00716.75
8.0.70.0030.00316.73
8.0.60.0000.00716.84
8.0.50.0000.00816.65
8.0.30.0110.00916.80
8.0.20.0140.00417.40
8.0.10.0000.00816.75
8.0.00.0090.01016.52
7.4.330.0050.00015.08
7.4.320.0060.00016.37
7.4.300.0030.00316.45
7.4.290.0000.00716.49
7.4.280.0070.00316.34
7.4.270.0000.00716.30
7.4.260.0030.00316.45
7.4.250.0030.00516.32
7.4.240.0020.00516.42
7.4.230.0000.00716.47
7.4.220.0130.00716.48
7.4.210.0130.00716.34
7.4.200.0000.00716.45
7.4.160.0040.01216.38
7.4.150.0060.01317.40
7.4.140.0100.01217.86
7.4.130.0070.01116.33
7.4.120.0130.00416.31
7.4.110.0030.01516.45
7.4.100.0180.00616.23
7.4.90.0100.00716.38
7.4.80.0080.00819.39
7.4.70.0090.00616.51
7.4.60.0120.00616.30
7.4.50.0050.00016.32
7.4.40.0100.01416.29
7.4.30.0060.01216.42
7.4.00.0070.00714.64
7.3.330.0060.00013.31
7.3.320.0000.00513.21
7.3.310.0030.00316.20
7.3.300.0070.00016.18
7.3.290.0040.01216.21
7.3.280.0120.00516.24
7.3.270.0000.01917.40
7.3.260.0070.01016.23
7.3.250.0110.00616.25
7.3.240.0090.00916.23
7.3.230.0030.01716.39
7.3.210.0070.01016.26
7.3.200.0030.01316.17
7.3.190.0060.00916.20
7.3.180.0040.01116.29
7.3.170.0030.01216.27
7.3.160.0070.01016.22
7.2.330.0150.00316.25
7.2.320.0060.01116.39
7.2.310.0000.02216.34
7.2.300.0070.01016.32
7.2.290.0100.00716.31
7.2.80.0070.00716.29
7.2.60.0080.00816.72
7.1.200.0030.01015.48
7.1.100.0030.01017.69
7.1.70.0030.00517.02
7.1.60.0100.01419.14
7.1.50.0120.00616.88
7.1.00.0030.07722.50
7.0.200.0000.01016.46
7.0.60.0070.03719.91
7.0.50.0100.08317.86
7.0.40.0030.04720.39
7.0.30.0370.07020.30
7.0.20.0270.04020.09
7.0.10.0100.07720.21
7.0.00.0030.08720.33
5.6.280.0030.03020.86
5.6.210.0000.09020.77
5.6.200.0100.07718.20
5.6.190.0070.04320.63
5.6.180.0300.05020.34
5.6.170.0230.08020.58
5.6.160.0100.06720.41
5.6.150.0030.08018.19
5.6.140.0100.07718.15
5.6.130.0130.06018.18
5.6.120.0100.07721.01
5.6.110.0170.07721.02
5.6.100.0100.07721.03
5.6.90.0070.07020.97
5.6.80.0130.05020.38
5.5.350.0030.08020.45
5.5.340.0130.07317.99
5.5.330.0000.04320.40
5.5.320.0470.06020.51
5.5.310.0230.04720.27
5.5.300.0130.03318.06
5.5.290.0100.04017.94
5.5.280.0100.07320.87
5.5.270.0130.07320.86
5.5.260.0030.07720.73
5.5.250.0100.05720.78
5.5.240.0170.07320.15
5.4.450.0630.06719.34
5.4.440.0700.06019.39
5.4.430.0730.05719.40
5.4.420.0800.05319.41
5.4.410.0830.04319.43
5.4.400.0870.06018.92
5.4.390.0870.06018.83
5.4.380.0870.07018.91
5.4.370.0830.04718.92
5.4.360.0770.05719.07
5.4.350.0830.05019.00
5.4.340.0770.06019.22
5.4.320.0730.05318.98
5.4.310.0730.05719.07
5.4.300.0630.07019.21
5.4.290.0630.05719.21
5.4.280.0800.04319.23
5.4.270.0670.05719.19
5.4.260.0830.04719.24
5.4.250.0800.04719.00
5.4.240.0870.06719.23
5.4.230.0730.05319.25
5.4.220.0730.06019.09
5.4.210.0770.04718.92
5.4.200.0730.05319.22
5.4.190.0870.04019.04
5.4.180.0730.05019.20
5.4.170.0700.05018.86
5.4.160.0700.05319.07
5.4.150.0900.05719.23
5.4.140.0700.05716.39
5.4.130.0870.03016.51
5.4.120.0730.05016.32
5.4.110.0700.05316.55
5.4.100.0630.05316.41
5.4.90.0800.04016.46
5.4.80.0700.05316.39
5.4.70.0300.04316.54
5.4.60.0030.04016.23
5.4.50.0070.07316.34
5.4.40.0100.04016.22
5.4.30.0170.04316.51
5.4.20.0370.05316.52

preferences:
60.25 ms | 401 KiB | 5 Q