3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { function overWrite() { $tmp = &$this; $tmp = new b; } } class b { } $a = new a; $a->overWrite(); var_dump($a);

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)
8.3.60.0040.01116.75
8.3.50.0100.00816.59
8.3.40.0160.00018.73
8.3.30.0120.00318.57
8.3.20.0000.00818.61
8.3.10.0040.00418.57
8.3.00.0040.00717.38
8.2.180.0040.01825.92
8.2.170.0070.01318.83
8.2.160.0090.00622.96
8.2.150.0000.00824.18
8.2.140.0110.00424.66
8.2.130.0070.00026.16
8.2.120.0050.00321.06
8.2.110.0000.01121.04
8.2.100.0040.00717.72
8.2.90.0040.00417.72
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0040.00417.80
8.2.50.0060.00318.07
8.2.40.0060.00319.22
8.2.30.0060.00317.68
8.2.20.0050.00517.61
8.2.10.0050.00317.55
8.2.00.0060.00317.59
8.1.280.0140.00725.92
8.1.270.0080.00023.99
8.1.260.0000.00726.35
8.1.250.0030.00528.09
8.1.240.0030.00622.23
8.1.230.0030.00722.70
8.1.220.0060.00317.74
8.1.210.0050.00318.96
8.1.200.0030.00617.35
8.1.190.0050.00317.23
8.1.180.0040.00418.10
8.1.170.0020.00518.83
8.1.160.0040.00418.89
8.1.150.0040.00418.61
8.1.140.0040.00417.39
8.1.130.0000.00717.38
8.1.120.0080.00017.40
8.1.110.0040.00417.42
8.1.100.0000.00717.34
8.1.90.0000.00717.45
8.1.80.0030.00317.38
8.1.70.0060.00017.35
8.1.60.0060.00317.61
8.1.50.0030.00517.47
8.1.40.0030.00617.44
8.1.30.0080.00017.63
8.1.20.0040.00417.56
8.1.10.0040.00417.43
8.1.00.0030.00517.34
8.0.300.0050.00220.14
8.0.290.0060.00316.75
8.0.280.0000.00618.48
8.0.270.0070.00017.12
8.0.260.0070.00016.66
8.0.250.0000.00716.91
8.0.240.0050.00216.91
8.0.230.0000.00816.88
8.0.220.0030.00516.82
8.0.210.0000.00716.89
8.0.200.0000.00716.86
8.0.190.0050.00216.91
8.0.180.0040.00416.74
8.0.170.0060.00316.73
8.0.160.0000.00816.72
8.0.150.0080.00016.81
8.0.140.0030.00416.79
8.0.130.0060.00013.34
8.0.120.0040.00416.72
8.0.110.0040.00416.72
8.0.100.0050.00316.71
8.0.90.0000.00816.70
8.0.80.0130.00716.81
8.0.70.0040.00416.78
8.0.60.0000.00716.71
8.0.50.0040.00416.80
8.0.30.0110.00816.84
8.0.20.0160.00616.89
8.0.10.0080.00016.95
8.0.00.0120.00616.78
7.4.330.0000.00512.98
7.4.320.0000.00616.43
7.4.300.0070.00016.55
7.4.290.0030.00316.48
7.4.280.0040.00416.45
7.4.270.0070.00016.45
7.4.260.0030.00313.27
7.4.250.0050.00316.53
7.4.240.0040.00416.51
7.4.230.0000.00716.39
7.4.220.0150.00316.64
7.4.210.0180.00416.55
7.4.200.0000.00716.40
7.4.190.0000.00816.73
7.4.160.0090.01216.38
7.4.150.0090.00916.70
7.4.140.0030.01817.86
7.4.130.0170.00916.28
7.4.120.0060.01116.55
7.4.110.0080.00916.57
7.4.100.0060.01116.42
7.4.90.0120.00616.55
7.4.80.0170.00419.39
7.4.70.0130.00316.39
7.4.60.0130.00316.36
7.4.50.0000.00616.45
7.4.40.0030.00916.50
7.4.30.0120.00916.65
7.4.00.0080.00414.87
7.3.330.0070.00013.09
7.3.320.0030.00313.05
7.3.310.0000.00716.09
7.3.300.0070.00016.25
7.3.290.0120.00416.22
7.3.280.0060.00916.23
7.3.270.0100.01016.19
7.3.260.0100.00716.47
7.3.240.0170.00716.20
7.3.230.0060.01316.33
7.3.210.0100.00716.34
7.3.200.0090.00916.31
7.3.190.0070.00716.33
7.3.180.0090.00616.35
7.3.170.0040.01716.09
7.3.160.0090.00616.17
7.3.120.0070.01014.63
7.2.330.0140.00316.29
7.2.320.0030.01516.45
7.2.310.0150.00616.32
7.2.300.0000.01616.45
7.2.290.0140.00316.46
7.2.60.0030.01016.91
7.1.200.0080.00315.82
7.1.70.0030.00717.16
7.1.60.0030.02019.25
7.1.50.0090.01217.05
7.1.00.0000.08022.35
7.0.200.0000.00716.75
7.0.140.0100.06722.18
7.0.120.0130.06321.96
7.0.60.0070.07020.04
7.0.50.0130.07717.84
7.0.40.0070.09020.23
7.0.30.0370.07020.02
7.0.20.0300.04020.15
7.0.10.0070.04320.18
7.0.00.0000.09020.09
5.6.280.0070.06721.15
5.6.210.0200.06720.48
5.6.200.0100.08318.18
5.6.190.0100.04020.55
5.6.180.0530.07320.57
5.6.170.0200.08020.55
5.6.160.0070.04320.46
5.6.150.0030.04018.23
5.6.140.0030.08318.16
5.6.130.0070.08318.13
5.6.120.0070.04320.80
5.6.110.0130.08021.11
5.6.100.0070.04021.11
5.6.90.0030.05020.88
5.6.80.0000.07020.39
5.5.350.0330.07020.38
5.5.340.0170.07017.95
5.5.330.0130.07020.40
5.5.320.0300.05020.27
5.5.310.0330.04720.37
5.5.300.0100.03318.04
5.5.290.0070.07318.05
5.5.280.0030.04720.78
5.5.270.0100.08020.78
5.5.260.0070.08720.75
5.5.250.0030.04020.80
5.5.240.0230.06720.12
5.4.450.0430.04319.46
5.4.440.0530.04319.39
5.4.430.0970.04019.45
5.4.420.0700.03319.45
5.4.410.0930.03719.38
5.4.400.0670.03718.97
5.4.390.0570.04719.16
5.4.380.0470.03718.99
5.4.370.0400.04319.24
5.4.360.0630.03719.13
5.4.350.0130.04718.83
5.4.340.0970.04319.16
5.4.320.0500.04718.96
5.4.310.0770.03319.06
5.4.300.0500.04018.85
5.4.290.0770.03719.31
5.4.280.0600.03718.95
5.4.270.0470.05019.16
5.4.260.0530.04318.85
5.4.250.0570.05019.21
5.4.240.0700.04319.18
5.4.230.0800.04719.14
5.4.220.0330.04719.18
5.4.210.0430.04018.95
5.4.200.0730.03319.05
5.4.190.0500.04319.20
5.4.180.0930.04019.20
5.4.170.0900.03718.84
5.4.160.0570.03318.86
5.4.150.0470.04018.92
5.4.140.0570.04716.44
5.4.130.0330.03716.50
5.4.120.0400.03716.71
5.4.110.1000.03716.58
5.4.100.0530.04016.59
5.4.90.0500.03316.47
5.4.80.0630.02016.38
5.4.70.0430.03716.59
5.4.60.0630.03316.33
5.4.50.0600.03016.21
5.4.40.0500.03016.40
5.4.30.0270.03316.55
5.4.20.0430.04316.48
5.4.10.0870.04716.30
5.4.00.0700.03715.96
5.3.290.0570.04015.48
5.3.280.0570.03715.64
5.3.270.0500.05015.64
5.3.260.0400.03315.64
5.3.250.0670.03715.64
5.3.240.0370.04315.64
5.3.230.0530.04015.64
5.3.220.0730.03715.64
5.3.210.0830.02715.64
5.3.200.0300.03315.64
5.3.190.0330.03715.64
5.3.180.0570.03015.64
5.3.170.0700.03715.64
5.3.160.0300.02715.64
5.3.150.1130.03015.64
5.3.140.0900.03315.64
5.3.130.0600.04015.64
5.3.120.0430.04015.64
5.3.110.0470.04015.64
5.3.100.0670.04015.64
5.3.90.0500.04315.64
5.3.80.0330.03315.64
5.3.70.0530.03315.64
5.3.60.0630.04015.64
5.3.50.0430.03715.64
5.3.40.0830.02315.64
5.3.30.0630.03315.64
5.3.20.0400.04315.64
5.3.10.0800.03015.64
5.3.00.0470.03315.64
5.2.170.0400.03315.64
5.2.160.0470.04015.64
5.2.150.0530.04015.64
5.2.140.0530.03015.64
5.2.130.0670.03715.64
5.2.120.0430.04015.64
5.2.110.0600.02715.64
5.2.100.0570.02315.64
5.2.90.0230.03015.64
5.2.80.0230.03715.64
5.2.70.0700.02715.64
5.2.60.0500.03315.64
5.2.50.0130.02315.64
5.2.40.0300.02715.64
5.2.30.0300.02715.64
5.2.20.0570.02315.64
5.2.10.0300.02315.64
5.2.00.0300.03315.64
5.1.60.0400.02715.64
5.1.50.0400.02315.64
5.1.40.0330.01715.64
5.1.30.0470.03715.64
5.1.20.0300.03315.64
5.1.10.0200.03015.64
5.1.00.0270.02715.64
5.0.50.0330.01715.64
5.0.40.0230.02015.64
5.0.30.0370.03715.64
5.0.20.0300.01715.64
5.0.10.0100.02015.64
5.0.00.0100.03015.64
4.4.90.0070.02015.64
4.4.80.0130.01715.64
4.4.70.0200.01715.64
4.4.60.0130.02715.64
4.4.50.0200.01715.64
4.4.40.0230.02015.64
4.4.30.0170.01315.64
4.4.20.0230.03315.64
4.4.10.0130.02015.64
4.4.00.0200.02315.64
4.3.110.0330.01315.64
4.3.100.0200.01015.64
4.3.90.0130.01315.64
4.3.80.0130.02315.64
4.3.70.0170.01315.64
4.3.60.0170.02015.64
4.3.50.0200.01715.64
4.3.40.0130.02715.64
4.3.30.0170.01015.64
4.3.20.0030.02015.64
4.3.10.0100.01015.64
4.3.00.0070.02015.64

preferences:
30.6 ms | 401 KiB | 5 Q