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; $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)
8.3.60.0070.01118.41
8.3.50.0150.00716.47
8.3.40.0120.00318.89
8.3.30.0100.00719.02
8.3.20.0050.00318.73
8.3.10.0000.00820.65
8.3.00.0040.00419.38
8.2.180.0070.00716.75
8.2.170.0090.00622.96
8.2.160.0070.00722.25
8.2.150.0070.00724.18
8.2.140.0040.00724.66
8.2.130.0040.00426.16
8.2.120.0050.00321.04
8.2.110.0100.00022.29
8.2.100.0070.00417.91
8.2.90.0030.00619.17
8.2.80.0040.00417.97
8.2.70.0050.00317.63
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0040.00418.03
8.2.30.0030.00618.06
8.2.20.0060.00317.71
8.2.10.0000.00717.63
8.2.00.0030.00617.69
8.1.280.0040.01125.92
8.1.270.0070.00023.99
8.1.260.0050.00326.35
8.1.250.0000.00828.09
8.1.240.0060.00322.42
8.1.230.0070.00420.89
8.1.220.0050.00318.77
8.1.210.0030.00618.97
8.1.200.0000.01017.48
8.1.190.0040.00417.53
8.1.180.0000.00818.10
8.1.170.0030.00518.90
8.1.160.0050.00218.78
8.1.150.0040.00418.43
8.1.140.0070.00017.35
8.1.130.0000.00717.50
8.1.120.0030.00417.41
8.1.110.0040.00417.31
8.1.100.0040.00417.38
8.1.90.0050.00317.29
8.1.80.0000.00717.36
8.1.70.0000.00717.39
8.1.60.0040.00417.48
8.1.50.0060.00317.52
8.1.40.0000.00817.56
8.1.30.0000.00717.48
8.1.20.0030.00617.53
8.1.10.0050.00217.56
8.1.00.0050.00317.55
8.0.300.0000.01119.90
8.0.290.0040.00416.63
8.0.280.0000.00818.36
8.0.270.0000.00717.34
8.0.260.0030.00316.74
8.0.250.0000.00716.95
8.0.240.0000.00816.96
8.0.230.0030.00316.80
8.0.220.0000.00716.85
8.0.210.0040.00416.87
8.0.200.0030.00316.91
8.0.190.0000.00816.81
8.0.180.0040.00416.81
8.0.170.0060.00316.81
8.0.160.0030.00516.82
8.0.150.0030.00616.73
8.0.140.0030.00816.84
8.0.130.0030.00313.22
8.0.120.0040.00416.78
8.0.110.0000.00716.71
8.0.100.0000.00716.77
8.0.90.0000.00816.73
8.0.80.0040.01116.84
8.0.70.0000.00716.93
8.0.60.0000.00716.89
8.0.50.0000.00716.80
8.0.30.0090.00917.01
8.0.20.0090.01217.40
8.0.10.0000.00717.02
8.0.00.0140.00916.73
7.4.330.0000.00514.92
7.4.320.0000.00716.36
7.4.300.0000.00616.49
7.4.290.0030.00316.57
7.4.280.0050.00316.51
7.4.270.0030.00316.62
7.4.260.0050.00013.27
7.4.250.0040.00416.48
7.4.240.0040.00416.54
7.4.230.0000.00716.54
7.4.220.0140.01116.61
7.4.210.0110.00516.61
7.4.200.0070.00016.59
7.4.190.0000.00716.60
7.4.160.0190.00316.40
7.4.150.0080.01117.18
7.4.140.0050.01317.17
7.4.130.0070.01116.57
7.4.120.0080.01016.58
7.4.110.0110.00616.48
7.4.100.0100.00616.63
7.4.90.0150.00316.38
7.4.80.0130.00618.80
7.4.70.0150.00416.45
7.4.60.0090.00916.60
7.4.50.0000.00816.36
7.4.40.0090.00622.27
7.4.30.0060.00916.56
7.4.00.0050.01315.00
7.3.330.0070.00013.30
7.3.320.0000.00513.10
7.3.310.0070.00016.18
7.3.300.0040.00416.35
7.3.290.0040.01116.21
7.3.280.0100.00916.26
7.3.270.0030.01417.40
7.3.260.0080.01218.24
7.3.250.0130.00516.43
7.3.240.0090.01216.46
7.3.230.0100.00616.51
7.3.210.0100.00616.36
7.3.200.0040.01119.39
7.3.190.0130.00416.52
7.3.180.0140.00816.43
7.3.170.0170.00016.30
7.3.160.0100.00616.69
7.3.120.0080.00914.85
7.3.110.0100.00714.58
7.3.100.0060.01314.89
7.3.90.0030.01014.82
7.3.80.0110.00614.47
7.3.70.0030.00714.70
7.3.60.0060.00614.84
7.3.50.0030.01014.99
7.3.40.0000.01514.86
7.3.30.0030.00714.76
7.3.20.0030.01016.69
7.3.10.0060.00916.71
7.3.00.0060.00316.75
7.2.330.0130.00416.50
7.2.320.0110.00616.41
7.2.310.0070.01316.78
7.2.300.0120.00616.59
7.2.290.0060.00916.52
7.2.250.0110.00714.89
7.2.240.0000.01515.14
7.2.230.0030.01715.24
7.2.220.0060.00915.23
7.2.210.0080.00414.66
7.2.200.0100.00715.26
7.2.190.0000.01115.09
7.2.180.0060.00915.08
7.2.170.0000.01115.07
7.2.00.0040.01119.46
7.1.330.0000.01315.71
7.1.320.0120.00615.98
7.1.310.0060.00915.88
7.1.300.0090.00015.87
7.1.290.0000.00916.01
7.1.280.0000.01415.80
7.1.270.0070.00715.92
7.1.260.0090.00015.54
7.1.100.0090.00318.04
7.1.70.0040.00417.03
7.1.60.0140.01019.40
7.1.50.0000.01916.90
7.1.00.0000.04022.36
7.0.200.0000.00916.89
7.0.140.0100.06722.09
7.0.110.0030.08719.95
7.0.100.0000.08019.89
7.0.90.0030.09019.97
7.0.80.0100.04720.06
7.0.70.0070.07719.89
7.0.60.0100.08320.07
7.0.50.0070.05019.91
7.0.40.0170.07019.60
7.0.30.0030.07019.84
7.0.20.0130.07319.73
7.0.10.0070.08019.73
7.0.00.0100.05019.84
5.6.280.0100.06721.08
5.6.260.0070.08020.66
5.6.250.0200.06320.56
5.6.240.0070.08320.48
5.6.230.0130.08020.51
5.6.220.0030.07720.66
5.6.210.0130.06720.59
5.6.200.0030.05020.48
5.6.190.0030.09320.65
5.6.180.0030.08320.63
5.6.170.0100.04020.66
5.6.160.0130.07720.63
5.6.150.0100.07720.63
5.6.140.0100.08020.61
5.6.130.0170.06720.70
5.6.120.0130.07320.71
5.6.110.0070.08320.62
5.6.100.0030.08320.61
5.6.90.0100.08320.50
5.6.80.0070.03720.01
5.6.70.0070.08019.99
5.6.60.0000.04020.07
5.6.50.0030.04720.00
5.6.40.0030.03719.83
5.6.30.0070.03719.84
5.6.20.0100.03319.97
5.6.10.0070.04719.92
5.6.00.0070.03720.02
5.5.380.0070.07720.33
5.5.370.0000.09020.53
5.5.360.0100.07720.34
5.5.350.0130.08020.40
5.5.340.0030.06021.02
5.5.330.0070.08320.99
5.5.320.0100.07320.77
5.5.310.0170.06320.87
5.5.300.0030.08320.90
5.5.290.0170.07320.96
5.5.280.0070.06020.87
5.5.270.0030.08720.80
5.5.260.0100.05320.84
5.5.250.0100.07020.68
5.5.240.0100.04020.04
5.5.230.0070.03720.12
5.5.220.0030.03720.35
5.5.210.0070.03720.39
5.5.200.0070.03720.37
5.5.190.0030.04020.32
5.5.180.0070.03720.32
5.5.160.0130.06320.14
5.5.150.0000.04020.33
5.5.140.0030.04020.24
5.5.130.0070.05320.28
5.5.120.0070.06320.25
5.5.110.0130.07020.38
5.5.100.0030.08320.06
5.5.90.0100.05320.25
5.5.80.0100.07720.00
5.5.70.0100.06320.04
5.5.60.0130.03020.26
5.5.50.0100.05720.07
5.5.40.0070.03720.20
5.5.30.0030.05719.98
5.5.20.0070.03720.18
5.5.10.0070.06319.96
5.5.00.0030.07720.15
5.4.450.0130.07719.33
5.4.440.0000.08319.34
5.4.430.0130.07319.55
5.4.420.0070.08019.35
5.4.410.0070.07719.42
5.4.400.0000.04719.00
5.4.390.0030.04719.32
5.4.380.0030.04719.18
5.4.370.0070.03319.34
5.4.360.0000.05319.00
5.4.350.0000.04719.09
5.4.340.0100.05019.09
5.4.320.0030.03719.02
5.4.310.0070.06719.03
5.4.300.0070.05319.00
5.4.290.0000.03718.95
5.4.280.0000.04319.14
5.4.270.0100.04319.01
5.4.260.0070.06319.01
5.4.250.0070.07019.18
5.4.240.0030.03719.14
5.4.230.0000.04019.24
5.4.220.0070.07018.95
5.4.210.0030.03719.18
5.4.200.0100.06719.31
5.4.190.0030.04318.99
5.4.180.0070.04019.30
5.4.170.0030.04319.00
5.4.160.0070.03319.16
5.4.150.0130.03319.29
5.4.140.0070.03316.53
5.4.130.0030.03316.50
5.4.120.0000.03716.46
5.4.110.0070.03716.43
5.4.100.0070.03016.36
5.4.90.0100.03016.42
5.4.80.0070.03316.57
5.4.70.0000.03716.42
5.4.60.0070.03016.33
5.4.50.0000.04316.34
5.4.40.0030.03716.59
5.4.30.0000.04016.43
5.4.20.0100.04016.48
5.4.10.0030.07716.56
5.4.00.0030.07315.97
5.3.290.0070.06714.70
5.3.280.0000.04014.73
5.3.270.0100.07014.74
5.3.260.0000.04014.74
5.3.250.0070.05714.62
5.3.240.0030.03714.63
5.3.230.0070.03314.60
5.3.220.0000.04014.65
5.3.210.0030.03714.58
5.3.200.0000.04014.70
5.3.190.0030.03714.59
5.3.180.0030.03314.55
5.3.170.0000.04014.60
5.3.160.0000.04014.70
5.3.150.0070.03314.65
5.3.140.0070.03314.61
5.3.130.0030.03714.78
5.3.120.0030.05014.55
5.3.110.0030.04314.68
5.3.100.0100.06714.27
5.3.90.0030.07313.97
5.3.80.0070.04314.10
5.3.70.0030.08314.16
5.3.60.0000.05014.23
5.3.50.0100.06714.03
5.3.40.0030.08013.97
5.3.30.0070.07313.77
5.3.20.0030.05313.79
5.3.10.0100.07013.64
5.3.00.0070.07013.75
5.2.170.0030.06312.07
5.2.160.0030.06712.07
5.2.150.0130.05312.07
5.2.140.0070.06312.07
5.2.130.0030.03712.07
5.2.120.0070.05712.07
5.2.110.0070.06312.07
5.2.100.0130.05712.07
5.2.90.0070.06312.07
5.2.80.0030.06312.07
5.2.70.0100.05712.07
5.2.60.0070.05012.07
5.2.50.0070.06012.07
5.2.40.0000.06312.07
5.2.30.0000.05712.07
5.2.20.0030.06012.07
5.2.10.0070.06012.07
5.2.00.0000.06312.07
5.1.60.0100.04712.07
5.1.50.0030.05712.07
5.1.40.0030.05712.07
5.1.30.0070.05312.07
5.1.20.0070.05312.07
5.1.10.0130.05012.07
5.1.00.0070.05012.07
5.0.50.0000.05012.07
5.0.40.0070.04012.07
5.0.30.0000.05712.07
5.0.20.0030.03312.07
5.0.10.0070.04312.07
5.0.00.0030.06712.07
4.4.90.0000.03712.07
4.4.80.0000.03712.07
4.4.70.0030.03712.07
4.4.60.0000.03312.07
4.4.50.0000.03712.07
4.4.40.0030.05012.07
4.4.30.0030.03312.07
4.4.20.0030.03712.07
4.4.10.0000.04012.07
4.4.00.0070.04712.07
4.3.110.0070.03012.07
4.3.100.0030.03012.07
4.3.90.0070.03312.07
4.3.80.0030.03312.07
4.3.70.0000.02012.07
4.3.60.0030.03012.07
4.3.50.0100.02712.07
4.3.40.0030.05012.07
4.3.30.0030.02712.07
4.3.20.0000.03312.07
4.3.10.0000.03712.07
4.3.00.0000.03712.07

preferences:
49.19 ms | 400 KiB | 5 Q