3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { } function deleteMe(&$obj) { $obj = (unset) $obj; unset($obj); } $foo = new Foo(); var_dump($foo); deleteMe($foo); var_dump($foo); unset($foo); debug_zval_dump($foo);

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)
8.3.70.0030.01118.68
8.3.60.0070.00716.63
8.3.50.0110.01017.44
8.3.40.0210.00018.81
8.3.30.0100.01018.46
8.3.20.0080.00018.64
8.3.10.0040.00420.53
8.3.00.0040.00419.26
8.2.180.0070.01116.50
8.2.170.0040.01122.96
8.2.160.0070.00721.02
8.2.150.0050.00324.18
8.2.140.0030.00624.66
8.2.130.0050.00226.16
8.2.120.0040.00420.71
8.2.110.0090.00020.89
8.2.100.0070.00417.84
8.2.90.0030.00619.29
8.2.80.0000.00919.41
8.2.70.0000.00817.38
8.2.60.0000.01017.91
8.2.50.0040.00418.07
8.2.40.0030.00618.09
8.2.30.0080.00017.85
8.2.20.0050.00217.38
8.2.10.0000.00717.45
8.2.00.0080.00017.46
8.1.280.0070.00725.92
8.1.270.0040.00424.66
8.1.260.0040.00826.35
8.1.250.0040.00428.09
8.1.240.0080.00022.38
8.1.230.0030.00920.78
8.1.220.0030.00517.74
8.1.210.0040.00418.82
8.1.200.0030.00617.10
8.1.190.0000.00717.27
8.1.180.0030.00618.10
8.1.170.0030.00518.84
8.1.160.0000.00718.74
8.1.150.0040.00418.40
8.1.140.0070.00017.31
8.1.130.0030.00317.62
8.1.120.0080.00017.22
8.1.110.0000.00717.28
8.1.100.0000.00717.20
8.1.90.0000.00717.35
8.1.80.0050.00217.30
8.1.70.0000.00717.30
8.1.60.0000.00717.40
8.1.50.0040.00417.20
8.1.40.0000.00817.41
8.1.30.0050.00217.48
8.1.20.0060.00317.49
8.1.10.0040.00417.23
8.1.00.0040.00417.23
8.0.300.0000.00719.66
8.0.290.0040.00416.63
8.0.280.0040.00418.20
8.0.270.0000.00717.13
8.0.260.0070.00016.66
8.0.250.0080.00016.91
8.0.240.0030.00316.88
8.0.230.0040.00416.73
8.0.220.0000.00716.88
8.0.210.0050.00216.82
8.0.200.0070.00416.94
8.0.190.0050.00216.93
8.0.180.0040.00416.82
8.0.170.0060.00316.72
8.0.160.0000.00716.81
8.0.150.0080.00016.78
8.0.140.0040.00416.77
8.0.130.0070.00013.28
8.0.120.0000.00716.82
8.0.110.0000.00716.68
8.0.100.0000.00716.78
8.0.90.0030.00316.88
8.0.80.0130.01016.75
8.0.70.0040.00316.82
8.0.60.0000.00716.84
8.0.50.0000.00816.68
8.0.30.0080.01416.90
8.0.20.0070.01716.93
8.0.10.0070.00016.93
8.0.00.0090.00816.56
7.4.330.0050.00012.98
7.4.320.0080.00016.64
7.4.300.0060.00016.57
7.4.290.0000.00716.40
7.4.280.0070.00016.51
7.4.270.0070.00016.40
7.4.260.0030.00313.27
7.4.250.0080.00016.39
7.4.240.0030.00316.41
7.4.230.0030.00316.70
7.4.220.0100.00716.54
7.4.210.0060.00816.51
7.4.200.0070.00016.40
7.4.190.0000.00716.40
7.4.160.0170.00016.42
7.4.150.0160.00616.47
7.4.140.0100.00816.51
7.4.130.0070.01116.60
7.4.120.0130.00316.44
7.4.110.0120.00916.46
7.4.100.0110.00716.57
7.4.90.0160.00016.45
7.4.80.0060.01219.39
7.4.70.0080.01216.62
7.4.60.0110.00416.53
7.4.50.0120.00016.35
7.4.40.0060.01016.68
7.4.30.0040.01416.81
7.4.00.0070.00714.79
7.3.330.0000.00713.36
7.3.320.0030.00513.34
7.3.310.0030.00316.50
7.3.300.0070.00016.38
7.3.290.0060.00916.33
7.3.280.0090.01016.39
7.3.270.0150.00316.36
7.3.260.0060.01116.37
7.3.250.0080.01316.39
7.3.240.0030.01616.61
7.3.230.0000.01716.59
7.3.210.0030.01416.61
7.3.200.0090.01516.61
7.3.190.0110.00616.39
7.3.180.0060.00916.45
7.3.170.0100.00816.35
7.3.160.0100.01016.44
7.3.120.0040.01115.04
7.2.330.0170.00316.71
7.2.320.0070.01716.79
7.2.310.0090.01216.43
7.2.300.0120.00416.60
7.2.290.0070.01116.64
7.2.60.0070.00316.61
7.2.00.0060.00919.20
7.1.200.0040.01115.56
7.1.100.0040.00818.35
7.1.70.0030.00717.13
7.1.60.0030.01719.40
7.1.50.0110.01116.78
7.1.00.0100.06722.48
7.0.200.0000.00816.71
7.0.140.0000.07722.18
7.0.120.0000.07722.05
7.0.60.0070.04019.86
7.0.50.0130.03717.88
7.0.40.0100.04320.05
7.0.30.0230.04020.25
7.0.20.0270.04720.09
7.0.10.0170.04020.10
7.0.00.0130.08320.22
5.6.280.0100.06720.86
5.6.210.0100.03320.70
5.6.200.0070.03718.16
5.6.190.0030.04720.41
5.6.180.0270.04720.60
5.6.170.0130.04320.71
5.6.160.0100.08320.49
5.6.150.0100.07018.18
5.6.140.0130.07318.27
5.6.130.0070.05318.14
5.6.120.0070.05321.15
5.6.110.0100.08320.99
5.6.100.0070.09021.07
5.6.90.0130.07721.13
5.6.80.0100.06020.48
5.6.70.0170.04720.41
5.5.350.0400.06320.33
5.5.340.0000.09017.98
5.5.330.0130.07720.21
5.5.320.0130.04320.59
5.5.310.0170.04720.38
5.5.300.0070.03718.08
5.5.290.0070.07017.95
5.5.280.0100.06320.85
5.5.270.0130.08020.86
5.5.260.0200.07320.96
5.5.250.0070.03720.61
5.5.240.0070.07720.28
5.4.450.3170.04019.55
5.4.440.3200.04719.46
5.4.430.2930.04719.57
5.4.420.2870.04019.41
5.4.410.3030.03319.36
5.4.400.3100.03718.85
5.4.390.2700.03319.32
5.4.380.2670.03718.87
5.4.370.2730.03019.26
5.4.360.3070.03019.06
5.4.350.2870.04019.20
5.4.340.2930.04019.22
5.4.320.2970.04018.84
5.4.310.2700.04018.98
5.4.300.2900.04019.22
5.4.290.3000.03719.05
5.4.280.3000.04318.86
5.4.270.2830.04019.20
5.4.260.3030.03718.96
5.4.250.3200.04319.14
5.4.240.3000.03718.86
5.4.230.2700.04018.84
5.4.220.2700.03718.96
5.4.210.2930.04019.20
5.4.200.2700.04019.15
5.4.190.2930.04019.05
5.4.180.2930.03319.25
5.4.170.2830.03019.18
5.4.160.3300.04318.98
5.4.150.3200.04019.20
5.4.140.3130.04316.34
5.4.130.2870.04016.46
5.4.120.2730.03716.46
5.4.110.3270.05016.50
5.4.100.2900.03716.41
5.4.90.2800.03716.64
5.4.80.2770.03716.39
5.4.70.2870.03716.39
5.4.60.2830.02716.53
5.4.50.2800.03716.42
5.4.40.2870.04016.42
5.4.30.2800.03016.33
5.4.20.2800.03316.55
5.4.10.2800.03316.43
5.4.00.2900.03315.91
5.3.290.2900.03314.68
5.3.280.3230.03714.50
5.3.270.2800.04014.52
5.3.260.2900.04314.57
5.3.250.2900.03014.53
5.3.240.2970.03314.52
5.3.230.2970.04014.61
5.3.220.2730.03714.47
5.3.210.3070.05014.68
5.3.200.2800.03014.68
5.3.190.2830.03314.57
5.3.180.2730.03314.71
5.3.170.2830.04014.54
5.3.160.2730.03314.61
5.3.150.2970.03314.53
5.3.140.2800.03714.52
5.3.130.2930.04014.45
5.3.120.2870.03714.56
5.3.110.3100.05014.55
5.3.100.3170.04314.26
5.3.90.3000.03713.92
5.3.80.3030.03313.95
5.3.70.3000.03314.04
5.3.60.3030.03713.91
5.3.50.3170.04013.86
5.3.40.3030.03313.92
5.3.30.2900.03013.92
5.3.20.2900.04013.63
5.3.10.3000.04013.80
5.3.00.2700.03313.65
5.2.170.2530.03711.15
5.2.160.2470.02311.05
5.2.150.2700.03311.13
5.2.140.2370.02711.29
5.2.130.2870.03311.02
5.2.120.1870.03311.19
5.2.110.1930.03711.25
5.2.100.2500.03311.05
5.2.90.2600.03011.21
5.2.80.2130.03311.24
5.2.70.2170.02711.00
5.2.60.1970.03011.28
5.2.50.2730.03310.93
5.2.40.1830.02711.07
5.2.30.2200.03011.04
5.2.20.2130.02711.00
5.2.10.1900.03010.86
5.2.00.2000.02310.82
5.1.60.1870.0239.95
5.1.50.2000.0239.90
5.1.40.1870.02710.06
5.1.30.2070.02310.29
5.1.20.1970.02710.27
5.1.10.2270.02010.13
5.1.00.2130.0309.95
5.0.50.1100.0278.69
5.0.40.1000.0208.42
5.0.30.1230.0308.16
5.0.20.1130.0208.13
5.0.10.1070.0308.25
5.0.00.1170.0408.14
4.4.90.1170.0175.83
4.4.80.1100.0205.80
4.4.70.0970.0235.89
4.4.60.0830.0235.82
4.4.50.1170.0205.89
4.4.40.1170.0305.85
4.4.30.1130.0235.85
4.4.20.1230.0135.96
4.4.10.0930.0135.99
4.4.00.1070.0335.95
4.3.110.0870.0175.74
4.3.100.0870.0175.80
4.3.90.1100.0205.74
4.3.80.0900.0275.80
4.3.70.0930.0105.80
4.3.60.1200.0135.71
4.3.50.1170.0175.77
4.3.40.1170.0305.73
4.3.30.0500.0205.66
4.3.20.0530.0205.66
4.3.10.0700.0205.66
4.3.00.0500.0175.66

preferences:
37.24 ms | 401 KiB | 5 Q