3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x { public $x = 'fooz'; public function d() { unset($this); unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this);unset($this); unset($this); unset($this); } } $x = new x; $x->d(); var_dump($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)
8.3.60.0140.00718.39
8.3.50.0070.01121.14
8.3.40.0070.00718.67
8.3.30.0090.00618.88
8.3.20.0040.00420.34
8.3.10.0060.00322.00
8.3.00.0040.00422.51
8.2.180.0140.00018.13
8.2.170.0110.00322.96
8.2.160.0130.00319.08
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0090.00019.11
8.2.110.0060.00322.21
8.2.100.0090.00319.51
8.2.90.0040.00419.05
8.2.80.0080.00017.97
8.2.70.0000.00817.38
8.2.60.0030.00617.90
8.2.50.0000.00818.07
8.2.40.0040.00418.03
8.2.30.0000.00818.01
8.2.20.0070.00017.51
8.2.10.0000.00817.58
8.2.00.0040.00417.49
8.1.280.0070.00725.92
8.1.270.0040.00422.03
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0030.00723.84
8.1.230.0090.00319.00
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0040.00417.10
8.1.190.0000.00917.38
8.1.180.0000.00818.41
8.1.170.0030.00518.54
8.1.160.0000.00822.04
8.1.150.0040.00418.48
8.1.140.0000.00817.38
8.1.130.0000.00717.80
8.1.120.0030.00317.36
8.1.110.0030.00617.38
8.1.100.0070.00017.21
8.1.90.0040.00417.36
8.1.80.0000.00717.21
8.1.70.0030.00317.32
8.1.60.0100.00017.46
8.1.50.0040.00417.41
8.1.40.0070.00017.27
8.1.30.0000.00817.48
8.1.20.0000.00817.55
8.1.10.0040.00417.27
8.1.00.0070.00017.22
8.0.300.0080.00018.77
8.0.290.0040.00416.93
8.0.280.0030.00318.30
8.0.270.0070.00017.08
8.0.260.0000.00716.75
8.0.250.0030.00316.85
8.0.240.0050.00216.78
8.0.230.0030.00316.79
8.0.220.0000.00716.70
8.0.210.0000.00716.82
8.0.200.0000.00616.90
8.0.190.0040.00416.87
8.0.180.0070.00016.75
8.0.170.0000.00716.89
8.0.160.0040.00416.86
8.0.150.0040.00416.74
8.0.140.0040.00416.84
8.0.130.0030.00313.21
8.0.120.0000.00816.68
8.0.110.0030.00516.83
8.0.100.0050.00516.73
8.0.90.0040.00416.71
8.0.80.0070.00716.82
8.0.70.0000.00816.80
8.0.60.0040.00416.82
8.0.50.0040.00416.75
8.0.30.0070.01416.92
8.0.20.0090.00917.40
8.0.10.0040.00416.96
8.0.00.0100.00816.70
7.4.330.0050.00015.00
7.4.320.0060.00016.28
7.4.300.0040.00416.48
7.4.290.0000.00716.39
7.4.280.0000.00716.37
7.4.270.0000.00916.48
7.4.260.0060.00316.44
7.4.250.0040.00416.43
7.4.240.0040.00416.45
7.4.230.0000.00716.47
7.4.220.0080.00816.46
7.4.210.0080.01016.40
7.4.200.0000.00716.56
7.4.190.0020.00516.44
7.4.160.0100.00616.50
7.4.150.0060.01917.40
7.4.140.0120.00717.86
7.4.130.0110.00616.23
7.4.120.0110.00616.42
7.4.110.0000.01616.34
7.4.100.0070.01116.28
7.4.90.0130.00316.29
7.4.80.0090.01219.39
7.4.70.0100.00716.46
7.4.60.0070.01016.44
7.4.50.0030.00516.45
7.4.40.0000.01122.77
7.4.30.0000.01616.27
7.4.00.0090.00315.03
7.3.330.0050.00013.23
7.3.320.0050.00013.08
7.3.310.0000.00716.07
7.3.300.0060.00016.08
7.3.290.0090.00616.22
7.3.280.0040.01216.20
7.3.270.0150.00317.40
7.3.260.0040.01516.18
7.3.250.0080.01116.18
7.3.240.0030.01816.38
7.3.230.0130.00716.39
7.3.210.0080.00816.28
7.3.200.0160.00716.33
7.3.190.0120.00916.43
7.3.180.0090.01516.27
7.3.170.0090.00916.31
7.3.160.0070.01416.36
7.3.120.0040.01214.78
7.2.330.0030.01316.57
7.2.320.0100.00716.13
7.2.310.0130.00916.57
7.2.300.0130.01016.10
7.2.290.0080.00816.30
7.2.80.0100.00616.41
7.2.60.0070.00716.68
7.2.00.0030.00718.97
7.1.200.0110.00415.64
7.1.100.0000.01717.79
7.1.70.0030.00617.02
7.1.60.0130.01319.82
7.1.50.0040.02116.86
7.1.00.0130.02322.51
7.0.200.0030.00716.82
7.0.140.0000.07722.12
7.0.110.0200.06319.99
7.0.100.0170.07020.09
7.0.90.0030.08319.95
7.0.80.0070.04319.93
7.0.70.0070.04019.84
7.0.60.0070.04019.90
7.0.50.0030.04019.93
7.0.40.0070.03719.88
7.0.30.0000.04319.71
7.0.20.0030.04319.86
7.0.10.0100.03719.78
7.0.00.0030.03719.58
5.6.280.0000.05021.08
5.6.260.0070.07720.68
5.6.250.0070.09020.63
5.6.240.0100.05020.71
5.6.230.0070.04020.64
5.6.220.0000.04320.63
5.6.210.0070.03720.42
5.6.200.0030.04020.71
5.6.190.0030.04020.60
5.6.180.0070.04020.57
5.6.170.0000.04320.63
5.6.160.0070.03720.57
5.6.150.0030.04320.73
5.6.140.0000.04320.66
5.6.130.0030.06020.61
5.6.120.0070.04020.70
5.6.110.0030.04020.66
5.6.100.0000.04320.68
5.6.90.0030.04020.83
5.6.80.0000.04020.03
5.6.70.0030.04020.04
5.6.60.0070.04020.04
5.6.50.0030.04720.06
5.6.40.0000.04020.07
5.6.30.0070.03319.92
5.6.20.0100.03319.92
5.6.10.0030.04020.06
5.6.00.0130.02719.88
5.5.380.0100.05020.48
5.5.370.0070.05020.57
5.5.360.0000.04320.32
5.5.350.0070.03720.48
5.5.340.0000.04320.90
5.5.330.0130.03320.70
5.5.320.0070.06020.91
5.5.310.0070.03720.95
5.5.300.0030.04320.79
5.5.290.0000.04320.92
5.5.280.0070.04320.90
5.5.270.0070.04020.98
5.5.260.0070.04020.95
5.5.250.0030.04320.63
5.5.240.0070.03720.30
5.5.230.0030.04320.29
5.5.220.0070.05720.34
5.5.210.0030.03720.17
5.5.200.0100.06020.23
5.5.190.0030.04320.05
5.5.180.0000.05020.25
5.5.160.0130.07020.06
5.5.150.0100.04720.39
5.5.140.0070.07720.32
5.5.130.0000.05720.05
5.5.120.0030.08020.24
5.5.110.0030.08320.05
5.5.100.0170.06720.27
5.5.90.0130.04320.25
5.5.80.0030.08020.03
5.5.70.0130.07320.05
5.5.60.0070.06720.25
5.5.50.0000.07320.25
5.5.40.0100.07320.04
5.5.30.0030.08020.20
5.5.20.0100.07020.21
5.5.10.0030.04720.12
5.5.00.0100.07319.93
5.4.450.0070.04019.34
5.4.440.0070.03719.50
5.4.430.0030.04019.33
5.4.420.0070.03719.34
5.4.410.0030.04019.38
5.4.400.0000.04019.19
5.4.390.0100.03319.00
5.4.380.0070.03319.00
5.4.370.0100.03019.18
5.4.360.0100.05719.18
5.4.350.0030.03719.24
5.4.340.0000.04019.14
5.4.320.0000.04319.23
5.4.310.0070.04319.16
5.4.300.0070.07319.01
5.4.290.0100.07319.09
5.4.280.0100.08018.99
5.4.270.0000.08019.02
5.4.260.0100.07319.03
5.4.250.0130.07319.02
5.4.240.0070.07718.98
5.4.230.0070.07319.16
5.4.220.0170.07319.17
5.4.210.0100.07319.00
5.4.200.0130.04019.13
5.4.190.0000.08319.33
5.4.180.0030.07319.07
5.4.170.0070.08019.18
5.4.160.0100.07318.93
5.4.150.0030.06318.99
5.4.140.0030.08016.31
5.4.130.0000.07716.43
5.4.120.0130.06316.39
5.4.110.0070.07316.54
5.4.100.0100.06716.41
5.4.90.0130.06716.59
5.4.80.0000.07716.40
5.4.70.0100.06716.57
5.4.60.0000.07016.57
5.4.50.0070.07016.53
5.4.40.0100.06316.59
5.4.30.0030.03316.51
5.4.20.0070.06716.38
5.4.10.0000.07316.39
5.4.00.0070.03715.76
5.3.290.0030.06314.54
5.3.280.0070.08014.61
5.3.270.0100.08014.61
5.3.260.0100.04314.61
5.3.250.0030.07714.62
5.3.240.0070.06714.61
5.3.230.0070.08014.46
5.3.220.0100.07014.72
5.3.210.0030.05014.59
5.3.200.0070.06714.58
5.3.190.0170.06314.57
5.3.180.0030.05014.59
5.3.170.0100.06714.59
5.3.160.0070.08014.65
5.3.150.0000.05014.58
5.3.140.0030.07314.70
5.3.130.0030.06714.56
5.3.120.0130.06714.56
5.3.110.0030.03714.78
5.3.100.0030.07013.91
5.3.90.0030.07314.12
5.3.80.0100.06314.17
5.3.70.0030.05014.12
5.3.60.0070.06714.25
5.3.50.0030.06713.94
5.3.40.0070.03713.98
5.3.30.0070.06713.95
5.3.20.0030.06713.70
5.3.10.0030.07013.67
5.3.00.0070.07013.65
5.2.170.0130.03311.95
5.2.160.0030.06011.95
5.2.150.0030.05311.95
5.2.140.0000.06711.95
5.2.130.0000.05311.95
5.2.120.0130.05311.95
5.2.110.0070.06311.95
5.2.100.0070.06011.95
5.2.90.0070.03311.95
5.2.80.0100.05711.95
5.2.70.0000.06711.95
5.2.60.0100.06011.95
5.2.50.0030.06311.95
5.2.40.0000.06711.95
5.2.30.0000.06711.95
5.2.20.0070.06011.95
5.2.10.0030.05011.95
5.2.00.0100.05311.95
5.1.60.0070.03011.95
5.1.50.0070.02711.95
5.1.40.0070.05011.95
5.1.30.0030.05711.95
5.1.20.0030.05711.95
5.1.10.0070.05711.95
5.1.00.0000.05311.95
5.0.50.0000.04711.95
5.0.40.0000.04011.95
5.0.30.0070.06011.95
5.0.20.0030.04311.95
5.0.10.0000.04711.95
5.0.00.0000.07011.95
4.4.90.0070.03011.95
4.4.80.0030.03311.95
4.4.70.0030.03311.95
4.4.60.0030.03311.95
4.4.50.0030.02011.95
4.4.40.0000.05711.95
4.4.30.0000.03711.95
4.4.20.0030.03311.95
4.4.10.0000.03711.95
4.4.00.0000.04311.95
4.3.110.0000.04011.95
4.3.100.0000.03711.95
4.3.90.0030.03011.95
4.3.80.0030.05311.95
4.3.70.0030.03311.95
4.3.60.0070.03011.95
4.3.50.0070.03311.95
4.3.40.0030.05011.95
4.3.30.0000.03711.95
4.3.20.0070.03011.95
4.3.10.0030.03711.95
4.3.00.0000.03711.95

preferences:
59.03 ms | 401 KiB | 5 Q