3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function __construct($n) { $this->n = $n; } function init($n) {$this->b = new A ($n);} } $a = new A(109); $b = new A(21); $a->b =& $b; unset($b); $aa = clone $a; $aa->init(22); echo $a->b->n; echo $aa->b->n;

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)
8.3.70.0060.01616.61
8.3.60.0110.00718.30
8.3.50.0090.00821.09
8.3.40.0110.00418.79
8.3.30.0130.00020.39
8.3.20.0070.00020.24
8.3.10.0000.00822.13
8.3.00.0060.00322.52
8.2.180.0090.00916.38
8.2.170.0070.00722.96
8.2.160.0130.00020.50
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0100.00726.16
8.2.120.0040.00419.76
8.2.110.0000.01121.05
8.2.100.0130.00317.84
8.2.90.0040.00419.05
8.2.80.0000.00719.23
8.2.70.0030.00617.63
8.2.60.0000.00818.05
8.2.50.0080.00018.07
8.2.40.0040.00418.03
8.2.30.0110.00018.06
8.2.20.0000.00817.71
8.2.10.0040.00417.68
8.2.00.0060.00619.45
8.1.280.0100.01025.92
8.1.270.0040.00424.66
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0100.00322.09
8.1.230.0070.00420.97
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0030.00617.13
8.1.190.0000.00817.53
8.1.180.0020.00520.25
8.1.170.0060.00318.45
8.1.160.0020.00522.14
8.1.150.0000.00818.45
8.1.140.0000.00717.27
8.1.130.0030.00317.74
8.1.120.0070.00017.26
8.1.110.0050.00317.44
8.1.100.0000.00817.31
8.1.90.0040.00417.35
8.1.80.0070.00017.47
8.1.70.0070.00017.36
8.1.60.0000.00917.55
8.1.50.0000.00717.48
8.1.40.0040.00417.45
8.1.30.0000.00817.52
8.1.20.0080.00017.62
8.1.10.0000.00817.62
8.1.00.0040.00417.50
8.0.300.0000.00718.77
8.0.290.0040.00417.18
8.0.280.0030.00318.50
8.0.270.0000.00717.26
8.0.260.0030.00316.82
8.0.250.0000.00617.02
8.0.240.0040.00416.83
8.0.230.0000.00816.79
8.0.220.0040.00416.77
8.0.210.0030.00316.73
8.0.200.0060.00016.88
8.0.190.0050.00316.79
8.0.180.0000.00716.77
8.0.170.0030.00516.74
8.0.160.0070.00016.74
8.0.150.0060.00316.70
8.0.140.0000.00716.73
8.0.130.0000.00513.16
8.0.120.0040.00416.79
8.0.110.0000.00716.72
8.0.100.0040.00416.68
8.0.90.0040.00416.64
8.0.80.0070.01016.79
8.0.70.0050.00316.68
8.0.60.0040.00416.85
8.0.50.0040.00416.62
8.0.30.0080.01117.19
8.0.20.0100.00817.40
8.0.10.0040.00416.94
8.0.00.0080.01216.93
7.4.330.0060.00015.00
7.4.320.0030.00316.62
7.4.300.0040.00416.48
7.4.290.0070.00016.51
7.4.280.0000.00716.60
7.4.270.0050.00316.66
7.4.260.0080.00016.36
7.4.250.0030.00516.38
7.4.240.0070.00016.56
7.4.230.0000.00716.62
7.4.220.0110.00716.61
7.4.210.0080.00616.61
7.4.200.0000.00716.70
7.4.190.0000.00716.46
7.4.160.0100.00716.32
7.4.150.0100.00717.40
7.4.140.0080.01217.86
7.4.130.0080.01016.52
7.4.120.0090.01116.59
7.4.110.0070.01316.33
7.4.100.0040.01216.45
7.4.90.0060.01216.59
7.4.80.0080.01019.39
7.4.70.0060.00916.43
7.4.60.0050.01016.53
7.4.50.0040.00416.34
7.4.40.0090.00622.77
7.4.30.0060.00916.58
7.4.00.0070.00715.20
7.3.330.0000.00713.29
7.3.320.0000.00513.01
7.3.310.0070.00016.11
7.3.300.0070.00016.31
7.3.290.0050.00816.20
7.3.280.0040.01116.22
7.3.270.0160.00717.40
7.3.260.0110.00816.72
7.3.250.0070.01016.45
7.3.240.0080.01016.29
7.3.230.0080.01316.39
7.3.210.0070.01116.46
7.3.200.0090.00919.39
7.3.190.0030.01416.55
7.3.180.0030.01316.18
7.3.170.0060.00916.44
7.3.160.0060.01616.44
7.3.120.0000.01614.68
7.3.10.0070.00716.56
7.3.00.0080.00316.48
7.2.330.0040.01416.85
7.2.320.0070.01516.69
7.2.310.0060.00916.64
7.2.300.0140.00316.68
7.2.290.0040.01216.48
7.2.130.0030.00716.92
7.2.120.0040.01117.06
7.2.110.0060.00316.98
7.2.100.0090.00616.83
7.2.90.0090.00317.08
7.2.80.0000.01016.84
7.2.70.0150.00016.98
7.2.60.0040.00916.79
7.2.50.0150.00316.70
7.2.40.0060.00916.64
7.2.30.0090.00616.71
7.2.20.0050.00516.65
7.2.10.0090.00016.66
7.2.00.0020.01317.97
7.1.250.0040.00415.70
7.1.100.0050.00718.30
7.1.70.0000.01016.93
7.1.60.0100.01319.21
7.1.50.0070.01516.93
7.1.00.0030.03322.30
7.0.200.0590.00414.58
7.0.140.0100.07021.95
7.0.60.0130.06319.83
7.0.50.0100.07717.96
7.0.40.0130.08020.22
7.0.30.0330.07720.10
7.0.20.0270.03320.20
7.0.10.0230.05020.23
7.0.00.0030.09320.18
5.6.280.0030.07320.99
5.6.210.0100.05320.73
5.6.200.0070.04318.18
5.6.190.0070.09020.61
5.6.180.0230.08320.41
5.6.170.0270.04320.50
5.6.160.0000.05020.47
5.6.150.0100.08318.18
5.6.140.0100.07718.19
5.6.130.0130.06718.14
5.6.120.0000.04321.02
5.6.110.0130.07720.98
5.6.100.0070.09321.11
5.6.90.0100.07720.97
5.6.80.0030.08720.41
5.6.70.0200.07720.54
5.5.350.0030.05020.47
5.5.340.0030.07718.02
5.5.330.0130.03720.21
5.5.320.0170.06320.22
5.5.310.0230.04020.34
5.5.300.0100.07717.95
5.5.290.0030.08317.97
5.5.280.0100.08020.78
5.5.270.0170.03020.68
5.5.260.0100.07320.94
5.5.250.0070.08320.59
5.5.240.0070.05020.29
5.4.450.0270.06319.48
5.4.440.0730.05319.39
5.4.430.0670.05019.62
5.4.420.0400.05319.55
5.4.410.0870.05019.48
5.4.400.0570.06318.53
5.4.390.0430.05718.73
5.4.380.0270.05018.78
5.4.370.0130.05318.69
5.4.360.0100.05718.74
5.4.350.0120.03312.03
5.4.340.0090.03312.02
5.4.320.0060.03612.50
5.4.310.0090.04512.50
5.4.300.0040.03712.50
5.4.290.0090.03412.50
5.4.280.0060.03912.40
5.4.270.0050.04512.39
5.4.260.0080.03612.40
5.4.250.0270.05018.96
5.4.240.0170.05718.92
5.4.230.0070.08018.79
5.4.220.0070.06718.95
5.4.210.0130.07018.99
5.4.200.0100.06319.08
5.4.190.0100.07718.92
5.4.180.0070.08019.07
5.4.170.0100.05018.75
5.4.160.0070.05318.93
5.4.150.0000.06018.73
5.4.140.0100.05016.51
5.4.130.0100.05016.40
5.4.120.0200.06016.54
5.4.110.0170.05716.40
5.4.100.0170.04016.33
5.4.90.0030.05016.52
5.4.80.0130.04716.44
5.4.70.0130.04316.50
5.4.60.0070.04716.37
5.4.50.0070.06016.61
5.4.40.0100.06016.40
5.4.30.0100.05016.54
5.4.20.0100.07016.51
5.4.10.0200.05016.37
5.4.00.0200.05315.99
5.3.290.0100.03412.80
5.3.280.0030.08014.57
5.3.270.0100.05314.68
5.3.260.0070.05314.69
5.3.250.0100.04714.68
5.3.240.0070.05014.77
5.3.230.0130.04714.74
5.3.220.0100.07314.74
5.3.210.0100.05314.66
5.3.200.0070.05314.41
5.3.190.0070.05014.56
5.3.180.0100.07014.63
5.3.170.0100.05014.56
5.3.160.0170.04314.65
5.3.150.0070.05014.80
5.3.140.0170.04314.70
5.3.130.0030.06014.39
5.3.120.0000.06014.54
5.3.110.0000.06014.56
5.3.100.0070.05314.24
5.3.90.0030.06014.25
5.3.80.0200.05314.09
5.3.70.0100.06714.19
5.3.60.0130.05313.98
5.3.50.0070.05314.04
5.3.40.0170.06014.02
5.3.30.0170.04013.92
5.3.20.0030.07713.79
5.3.10.0030.05013.73
5.3.00.0030.05313.62
5.2.170.0070.05711.20
5.2.160.0200.02711.31
5.2.150.0070.05011.23
5.2.140.0130.05310.97
5.2.130.0070.05711.18
5.2.120.0100.03711.32
5.2.110.0130.03711.18
5.2.100.0100.03311.07
5.2.90.0070.03711.09
5.2.80.0000.04711.26
5.2.70.0070.05311.18
5.2.60.0070.04311.00
5.2.50.0070.04011.00
5.2.40.0100.03711.08
5.2.30.0100.03711.07
5.2.20.0070.04011.04
5.2.10.0000.04310.95
5.2.00.0070.04310.91
5.1.60.0030.05010.07
5.1.50.0070.0339.98
5.1.40.0130.0309.96
5.1.30.0030.03710.44
5.1.20.0030.04010.34
5.1.10.0030.03710.02
5.1.00.0100.03310.05
5.0.50.0030.0308.59
5.0.40.0000.0308.45
5.0.30.0070.0408.39
5.0.20.0100.0208.15
5.0.10.0000.0338.17
5.0.00.0000.0438.14
4.4.90.0070.0177.39
4.4.80.0000.0337.39
4.4.70.0030.0237.39
4.4.60.0030.0307.39
4.4.50.0070.0207.39
4.4.40.0030.0437.39
4.4.30.0030.0207.39
4.4.20.0000.0237.39
4.4.10.0070.0207.39
4.4.00.0030.0337.39
4.3.110.0000.0237.39
4.3.100.0030.0207.39
4.3.90.0000.0237.39
4.3.80.0000.0337.39
4.3.70.0030.0237.39
4.3.60.0030.0207.39
4.3.50.0030.0237.39
4.3.40.0000.0337.39
4.3.30.0000.0307.39
4.3.20.0030.0277.39
4.3.10.0030.0207.39
4.3.00.0200.0236.33

preferences:
51.61 ms | 401 KiB | 5 Q