3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x { public function __construct() { $x =& $this; $x = null; unset($x); var_dump($this); } } var_dump(new x);

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)
8.3.60.0110.01118.43
8.3.50.0080.01221.27
8.3.40.0100.00318.77
8.3.30.0080.00618.70
8.3.20.0040.00418.60
8.3.10.0080.00021.09
8.3.00.0040.00423.66
8.2.180.0120.00316.63
8.2.170.0100.01022.96
8.2.160.0110.00420.54
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0060.00321.05
8.2.110.0090.00020.39
8.2.100.0080.00417.78
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0040.00417.36
8.2.60.0080.00017.90
8.2.50.0080.00018.07
8.2.40.0000.00918.22
8.2.30.0090.00019.55
8.2.20.0040.00417.57
8.2.10.0040.00417.68
8.2.00.0000.00817.61
8.1.280.0070.00725.92
8.1.270.0070.00023.99
8.1.260.0090.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00622.19
8.1.230.0110.00017.52
8.1.220.0060.00317.75
8.1.210.0030.00518.77
8.1.200.0030.00617.10
8.1.190.0040.00417.28
8.1.180.0050.00318.10
8.1.170.0040.00418.61
8.1.160.0040.00418.70
8.1.150.0030.00618.49
8.1.140.0040.00417.38
8.1.130.0020.00517.74
8.1.120.0050.00217.40
8.1.110.0030.00517.39
8.1.100.0030.00517.28
8.1.90.0000.00717.43
8.1.80.0000.00717.30
8.1.70.0080.00017.35
8.1.60.0060.00317.63
8.1.50.0040.00417.48
8.1.40.0040.00417.57
8.1.30.0000.00717.61
8.1.20.0030.00617.64
8.1.10.0050.00317.59
8.1.00.0040.00417.48
8.0.300.0040.00418.77
8.0.290.0000.00916.58
8.0.280.0030.00318.29
8.0.270.0100.00017.23
8.0.260.0000.00616.70
8.0.250.0000.00816.91
8.0.240.0030.00616.86
8.0.230.0000.00716.79
8.0.220.0030.00316.85
8.0.210.0070.00016.71
8.0.200.0000.00716.78
8.0.190.0000.00716.95
8.0.180.0080.00016.86
8.0.170.0000.00716.74
8.0.160.0070.00016.85
8.0.150.0070.00016.74
8.0.140.0000.00816.85
8.0.130.0000.00613.23
8.0.120.0040.00416.77
8.0.110.0050.00316.93
8.0.100.0040.00416.78
8.0.90.0000.00716.63
8.0.80.0070.01416.71
8.0.70.0050.00316.79
8.0.60.0030.00516.83
8.0.50.0030.00316.82
8.0.30.0140.00417.19
8.0.20.0100.01017.40
8.0.10.0080.00016.85
8.0.00.0110.00916.51
7.4.330.0060.00014.75
7.4.320.0060.00016.53
7.4.300.0070.00016.59
7.4.290.0030.00316.59
7.4.280.0000.00716.44
7.4.270.0000.00716.42
7.4.260.0050.00013.28
7.4.250.0000.00716.48
7.4.240.0070.00016.63
7.4.230.0030.00516.32
7.4.220.0100.00716.49
7.4.210.0100.00616.63
7.4.200.0070.00016.61
7.4.190.0040.00416.64
7.4.160.0030.01316.53
7.4.150.0140.01017.40
7.4.140.0130.00817.86
7.4.130.0090.00916.69
7.4.120.0120.00516.48
7.4.110.0090.01216.68
7.4.100.0170.00016.27
7.4.90.0120.00616.46
7.4.80.0100.01019.39
7.4.70.0160.00416.37
7.4.60.0120.00816.34
7.4.50.0040.00416.22
7.4.40.0000.01522.77
7.4.30.0080.00816.52
7.4.00.0090.00614.92
7.3.330.0000.00613.06
7.3.320.0000.00513.17
7.3.310.0030.00516.26
7.3.300.0000.00716.07
7.3.290.0070.01316.23
7.3.280.0020.01216.26
7.3.270.0130.00317.40
7.3.260.0120.00518.24
7.3.250.0130.00716.33
7.3.240.0140.00816.15
7.3.230.0080.00816.39
7.3.210.0070.01416.31
7.3.200.0090.00919.39
7.3.190.0130.01016.14
7.3.180.0060.00916.29
7.3.170.0060.01016.34
7.3.160.0030.01316.29
7.3.120.0030.01414.69
7.2.330.0100.00716.60
7.2.320.0150.00916.59
7.2.310.0040.01416.50
7.2.300.0120.00416.45
7.2.290.0100.01016.57
7.2.60.0140.00316.50
7.2.00.0000.01219.45
7.1.200.0040.00715.71
7.1.100.0030.01017.99
7.1.70.0030.00517.03
7.1.60.0040.00819.40
7.1.50.0100.01416.92
7.1.00.0030.03322.44
7.0.200.0030.00616.78
7.0.140.0070.07022.09
7.0.70.0200.07021.63
7.0.60.0070.06021.67
7.0.50.0030.08022.20
7.0.40.0070.07020.18
7.0.30.0030.06020.05
7.0.20.0100.07720.10
7.0.10.0070.05720.09
7.0.00.0030.05720.07
5.6.280.0030.07321.13
5.6.220.0030.07720.66
5.6.210.0030.07020.62
5.6.200.0130.05720.96
5.6.190.0030.07021.00
5.6.180.0030.06721.06
5.6.170.0070.08021.08
5.6.160.0000.08321.12
5.6.150.0030.08020.99
5.6.140.0170.07321.14
5.6.130.0070.08721.06
5.6.120.0000.05320.96
5.6.110.0030.08020.92
5.6.100.0070.08020.92
5.6.90.0100.05321.15
5.6.80.0070.07320.47
5.6.70.0070.08020.33
5.6.60.0070.06720.48
5.6.50.0030.08020.48
5.6.40.0070.05320.46
5.6.30.0000.08020.30
5.6.20.0030.07720.43
5.6.10.0030.06720.37
5.6.00.0070.06720.46
5.5.360.0030.06320.36
5.5.350.0030.04020.34
5.5.340.0070.07720.85
5.5.330.0000.07020.93
5.5.320.0070.07320.78
5.5.310.0030.08020.88
5.5.300.0000.04320.88
5.5.290.0030.08320.63
5.5.280.0070.05720.86
5.5.270.0100.07020.59
5.5.260.0000.09020.91
5.5.250.0030.07720.68
5.5.240.0070.07720.25
5.5.230.0070.07320.27
5.5.220.0100.07720.30
5.5.210.0070.07320.26
5.5.200.0030.08020.15
5.5.190.0070.08020.12
5.5.180.0030.05320.19
5.5.160.0070.06320.20
5.5.150.0070.07020.11
5.5.140.0030.07020.27
5.5.130.0100.05020.13
5.5.120.0070.04320.23
5.5.110.0000.07020.26
5.5.100.0030.08020.14
5.5.90.0030.05320.15
5.5.80.0130.06719.97
5.5.70.0070.04720.10
5.5.60.0030.08320.15
5.5.50.0100.07720.15
5.5.40.0000.04020.05
5.5.30.0000.04020.04
5.5.20.0030.03719.92
5.5.10.0070.02720.00
5.5.00.0000.06020.04
5.4.450.0000.06719.25
5.4.440.0070.04019.20
5.4.430.0030.06319.46
5.4.420.0000.07319.50
5.4.410.0000.05719.40
5.4.400.0130.05318.85
5.4.390.0100.07019.12
5.4.380.0100.06019.02
5.4.370.0070.07019.11
5.4.360.0000.07318.85
5.4.350.0070.04719.07
5.4.340.0100.07019.03
5.4.320.0030.04319.01
5.4.310.0000.07719.15
5.4.300.0130.06318.92
5.4.290.0030.07019.10
5.4.280.0030.07319.02
5.4.270.0030.05319.12
5.4.260.0000.07319.01
5.4.250.0000.05319.19
5.4.240.0100.06719.14
5.4.230.0000.07718.85
5.4.220.0030.05019.05
5.4.210.0100.03319.02
5.4.200.0000.04019.02
5.4.190.0000.04019.10
5.4.180.0030.03718.91
5.4.170.0000.03319.01
5.4.160.0030.03718.80
5.4.150.0000.03318.80
5.4.140.0030.03716.13
5.4.130.0000.03016.37
5.4.120.0030.03016.13
5.4.110.0030.02716.33
5.4.100.0000.03716.32
5.4.90.0000.03316.45
5.4.80.0000.03016.42
5.4.70.0000.03016.30
5.4.60.0000.03716.41
5.4.50.0000.03016.41
5.4.40.0070.02316.46
5.4.30.0030.02716.30
5.4.20.0000.03716.32
5.4.10.0000.04316.27
5.4.00.0030.02715.85
5.3.290.0030.08314.80
5.3.280.0030.07714.53
5.3.270.0000.03714.65
5.3.260.0030.03714.59
5.3.250.0030.03314.62
5.3.240.0030.02714.66
5.3.230.0000.03714.56
5.3.220.0030.03714.53
5.3.210.0000.03014.52
5.3.200.0000.03714.65
5.3.190.0000.03014.65
5.3.180.0030.02714.65
5.3.170.0000.03014.63
5.3.160.0000.04014.65
5.3.150.0000.03714.65
5.3.140.0000.03014.69
5.3.130.0000.03314.59
5.3.120.0030.03014.64
5.3.110.0030.04014.69
5.3.100.0000.03014.09
5.3.90.0000.03014.04
5.3.80.0000.03013.92
5.3.70.0000.03014.07
5.3.60.0030.03013.92
5.3.50.0000.03313.87
5.3.40.0030.03714.04
5.3.30.0000.03014.02
5.3.20.0000.03013.58
5.3.10.0000.02713.66
5.3.00.0000.03013.52
5.2.170.0000.04011.25
5.2.160.0000.02711.26
5.2.150.0030.02311.15
5.2.140.0000.02311.09
5.2.130.0000.02311.03
5.2.120.0000.02311.13
5.2.110.0000.02311.11
5.2.100.0000.02311.09
5.2.90.0030.02011.17
5.2.80.0030.02011.20
5.2.70.0000.02311.14
5.2.60.0000.02310.91
5.2.50.0000.02310.95
5.2.40.0000.02310.85
5.2.30.0030.02011.10
5.2.20.0000.02311.06
5.2.10.0030.02010.97
5.2.00.0000.02310.68
5.1.60.0000.02010.35
5.1.50.0000.02310.35
5.1.40.0000.02010.35
5.1.30.0000.02010.35
5.1.20.0030.01710.38
5.1.10.0000.03010.35
5.1.00.0000.02310.35
5.0.50.0100.02310.35
5.0.40.0100.03310.35
5.0.30.0000.05710.35
5.0.20.0000.02010.35
5.0.10.0030.01710.35
5.0.00.0000.06710.35
4.4.90.0000.01310.35
4.4.80.0000.01710.35
4.4.70.0030.01010.35
4.4.60.0000.01310.35
4.4.50.0000.01310.35
4.4.40.0000.02310.35
4.4.30.0000.01310.35
4.4.20.0000.02010.35
4.4.10.0000.02310.35
4.4.00.0000.04310.35
4.3.110.0000.01310.35
4.3.100.0000.01310.35
4.3.90.0000.02010.35
4.3.80.0000.04010.35
4.3.70.0000.01710.35
4.3.60.0000.01710.35
4.3.50.0000.01310.35
4.3.40.0000.02310.35
4.3.30.0070.03310.35
4.3.20.0030.03310.35
4.3.10.0100.01710.35
4.3.00.0000.01310.35

preferences:
47.35 ms | 401 KiB | 5 Q