3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Item { public static function &newWithParent(Item $parent) { $item = new Item(); $item->parent = $parent; return $item; } private $parent; public function &getParent() { return $this->parent; } } $item = Item::newWithParent(Item::newWithParent(Item::newWithParent(new Item()))); // Basically it's this now: {"parent":{"parent":{"parent":{"parent":null}}}} // I want to set that null value do { $item = $item->getParent(); if ($item->getParent() === null) { $item = Item::newWithParent($item); break; } } while (true); var_dump($item);

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)
8.3.60.0090.00618.43
8.3.50.0110.00621.14
8.3.40.0040.01118.79
8.3.30.0110.00818.70
8.3.20.0040.00418.74
8.3.10.0050.00319.29
8.3.00.0070.00023.50
8.2.180.0110.00418.54
8.2.170.0160.00022.96
8.2.160.0070.00720.39
8.2.150.0080.00024.18
8.2.140.0050.00524.66
8.2.130.0040.00426.16
8.2.120.0080.00019.64
8.2.110.0040.00420.35
8.2.100.0040.00817.72
8.2.90.0000.00819.05
8.2.80.0000.00717.97
8.2.70.0090.00317.38
8.2.60.0000.00818.04
8.2.50.0030.00518.07
8.2.40.0050.00318.16
8.2.30.0040.00421.22
8.2.20.0040.00417.73
8.2.10.0000.00817.70
8.2.00.0040.00417.69
8.1.280.0100.01025.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00622.06
8.1.230.0060.00620.88
8.1.220.0040.00418.77
8.1.210.0080.00018.86
8.1.200.0000.00817.25
8.1.190.0000.00717.53
8.1.180.0040.00418.10
8.1.170.0000.00818.57
8.1.160.0070.00018.77
8.1.150.0070.00018.60
8.1.140.0080.00017.28
8.1.130.0030.00317.89
8.1.120.0000.00817.45
8.1.110.0030.00617.41
8.1.100.0040.00417.47
8.1.90.0040.00417.42
8.1.80.0040.00417.30
8.1.70.0000.00717.35
8.1.60.0080.00017.48
8.1.50.0040.00417.48
8.1.40.0070.00017.59
8.1.30.0040.00417.63
8.1.20.0030.00617.58
8.1.10.0040.00417.54
8.1.00.0000.00817.45
8.0.300.0040.00419.82
8.0.290.0000.00717.05
8.0.280.0030.00318.41
8.0.270.0070.00017.32
8.0.260.0000.00616.74
8.0.250.0040.00416.98
8.0.240.0040.00416.96
8.0.230.0000.00716.96
8.0.220.0000.01016.89
8.0.210.0030.00316.91
8.0.200.0040.00416.84
8.0.190.0000.00816.96
8.0.180.0000.00716.89
8.0.170.0000.00816.97
8.0.160.0040.00416.98
8.0.150.0000.00716.89
8.0.140.0030.00616.75
8.0.130.0000.00513.38
8.0.120.0080.00016.79
8.0.110.0050.00316.71
8.0.100.0070.00016.79
8.0.90.0040.00416.84
8.0.80.0030.01216.86
8.0.70.0000.00716.81
8.0.60.0050.00216.86
8.0.50.0040.00416.86
8.0.30.0110.01016.92
8.0.20.0110.00817.40
8.0.10.0040.00416.86
8.0.00.0140.00716.58
7.4.330.0030.00314.77
7.4.320.0030.00316.64
7.4.300.0060.00016.52
7.4.290.0030.00316.64
7.4.280.0050.00316.44
7.4.270.0000.00716.59
7.4.260.0030.00313.36
7.4.250.0040.00416.48
7.4.240.0000.00716.45
7.4.230.0000.00716.44
7.4.220.0090.00916.53
7.4.210.0100.00816.55
7.4.200.0000.00716.41
7.4.190.0040.00416.48
7.4.160.0080.00816.63
7.4.150.0000.01817.40
7.4.140.0110.00817.86
7.4.130.0140.00516.44
7.4.120.0110.00516.53
7.4.110.0070.01016.45
7.4.100.0160.00316.43
7.4.90.0140.00716.48
7.4.80.0030.01319.37
7.4.70.0060.01016.65
7.4.60.0040.01416.60
7.4.50.0080.00016.02
7.4.40.0000.01522.52
7.4.30.0120.00516.47
7.4.00.0050.01214.90
7.3.330.0020.00213.19
7.3.320.0070.00713.37
7.3.310.0000.00716.38
7.3.300.0030.00316.22
7.3.290.0110.00316.41
7.3.280.0050.01216.38
7.3.270.0110.00717.40
7.3.260.0070.01118.24
7.3.250.0090.00916.47
7.3.240.0140.00316.35
7.3.230.0040.01616.39
7.3.210.0100.00716.30
7.3.200.0090.00919.39
7.3.190.0110.01116.59
7.3.180.0110.00516.61
7.3.170.0060.00916.51
7.3.160.0030.01316.28
7.3.120.0080.00914.82
7.3.110.0020.01414.93
7.3.100.0030.01114.66
7.3.90.0080.00814.65
7.3.80.0080.00414.65
7.3.70.0060.00814.59
7.3.60.0100.00614.79
7.3.50.0020.01214.75
7.3.40.0030.01014.61
7.3.30.0030.00914.55
7.3.20.0060.00716.38
7.3.10.0080.00616.77
7.3.00.0020.01116.79
7.2.330.0090.00916.80
7.2.320.0070.01116.55
7.2.310.0090.01316.52
7.2.300.0120.00416.68
7.2.290.0140.00916.55
7.2.250.0080.01014.78
7.2.240.0090.00914.94
7.2.230.0030.01214.91
7.2.220.0070.01215.01
7.2.210.0020.00815.07
7.2.200.0080.00714.91
7.2.190.0070.00814.79
7.2.180.0050.00914.72
7.2.170.0060.00615.13
7.2.00.0100.00719.48
7.1.330.0060.00815.63
7.1.320.0050.01015.88
7.1.310.0080.00615.77
7.1.300.0040.01015.84
7.1.290.0070.00615.77
7.1.280.0090.00615.99
7.1.270.0020.01315.89
7.1.260.0070.00715.63
7.1.100.0000.00917.99
7.1.70.0040.00416.86
7.1.60.0140.01019.40
7.1.50.0210.01434.81
7.1.00.0070.07322.57
7.0.200.0000.01016.69
7.0.140.0030.07322.07
7.0.70.0100.08321.73
7.0.60.0000.09321.77
7.0.50.0030.09021.96
7.0.40.0100.05720.11
7.0.30.0030.08720.05
7.0.20.0030.09020.13
7.0.10.0030.07020.09
7.0.00.0030.05020.07
5.6.280.0100.06720.99
5.6.220.0070.07720.60
5.6.210.0030.08320.48
5.6.200.0030.07721.09
5.6.190.0130.07320.95
5.6.180.0030.08721.11
5.6.170.0100.05021.06
5.6.160.0030.06720.95
5.6.150.0100.07721.12
5.6.140.0070.07721.13
5.6.130.0030.04721.02
5.6.120.0100.04021.13
5.6.110.0070.04021.07
5.6.100.0100.05721.11
5.6.90.0030.09320.99
5.6.80.0170.06720.39
5.6.70.0030.08320.44
5.6.60.0070.07720.48
5.6.50.0000.08720.56
5.6.40.0070.08320.44
5.6.30.0000.06020.45
5.6.20.0130.07320.37
5.6.10.0030.05720.38
5.6.00.0130.07020.45
5.5.360.0030.06720.56
5.5.350.0070.08020.43
5.5.340.0030.08320.92
5.5.330.0070.08020.87
5.5.320.0070.07320.81
5.5.310.0070.08020.73
5.5.300.0100.07720.80
5.5.290.0100.04320.86
5.5.280.0070.09320.86
5.5.270.0070.08320.88
5.5.260.0000.09020.89
5.5.250.0030.06320.73
5.5.240.0130.04720.27
5.5.230.0030.05320.29
5.5.220.0070.05720.29
5.5.210.0000.05320.24
5.5.200.0030.04720.19
5.5.190.0000.05320.18
5.5.180.0100.07720.27
5.5.160.0070.07320.09
5.5.150.0000.05020.12
5.5.140.0070.07020.28
5.5.130.0070.08320.13
5.5.120.0000.05720.26
5.5.110.0030.08020.27
5.5.100.0030.04019.96
5.5.90.0000.04320.13
5.5.80.0070.07319.97
5.5.70.0070.08320.12
5.5.60.0070.08020.05
5.5.50.0070.07320.06
5.5.40.0100.07320.14
5.5.30.0030.08320.14
5.5.20.0000.08020.11
5.5.10.0070.07720.05
5.5.00.0000.04720.00
5.4.450.0130.07719.18
5.4.440.0130.07719.37
5.4.430.0070.08019.41
5.4.420.0000.08319.35
5.4.410.0100.05319.11
5.4.400.0030.05319.03
5.4.390.0070.07719.23
5.4.380.0030.06019.03
5.4.370.0030.04319.13
5.4.360.0100.07019.09
5.4.350.0100.07019.18
5.4.340.0100.05318.90
5.4.320.0070.04719.03
5.4.310.0070.06719.07
5.4.300.0070.07719.02
5.4.290.0070.07318.90
5.4.280.0030.07718.90
5.4.270.0030.04318.89
5.4.260.0000.04719.03
5.4.250.0000.04018.86
5.4.240.0030.06319.11
5.4.230.0030.06019.13
5.4.220.0000.08318.94
5.4.210.0000.08719.04
5.4.200.0030.08019.05
5.4.190.0070.06019.11
5.4.180.0070.06019.11
5.4.170.0070.05718.90
5.4.160.0030.05719.03
5.4.150.0100.07319.02
5.4.140.0030.07016.46
5.4.130.0070.07716.34
5.4.120.0030.07316.43
5.4.110.0170.03316.44
5.4.100.0000.05316.50
5.4.90.0030.03716.51
5.4.80.0100.04316.45
5.4.70.0070.06016.46
5.4.60.0100.03016.39
5.4.50.0030.03716.30
5.4.40.0030.04016.50
5.4.30.0100.03016.46
5.4.20.0030.04016.41
5.4.10.0030.05316.45
5.4.00.0070.02715.86
5.3.290.0170.06714.66
5.3.280.0030.07314.53
5.3.270.0070.07714.58
5.3.260.0100.07314.60
5.3.250.0000.05314.62
5.3.240.0030.07314.72
5.3.230.0030.07014.67
5.3.220.0070.07314.52
5.3.210.0000.04714.58
5.3.200.0070.03714.66
5.3.190.0070.03714.63
5.3.180.0000.04014.55
5.3.170.0030.03714.54
5.3.160.0100.03014.63
5.3.150.0070.03314.63
5.3.140.0070.04014.67
5.3.130.0070.03714.57
5.3.120.0000.04014.62
5.3.110.0030.03714.48
5.3.100.0000.04013.99
5.3.90.0030.03714.08
5.3.80.0030.03713.95
5.3.70.0000.03314.04
5.3.60.0070.05013.99
5.3.50.0030.05714.09
5.3.40.0000.04313.95
5.3.30.0000.03713.97
5.3.20.0070.02713.82
5.3.10.0000.03013.78
5.3.00.0030.03013.63
5.2.170.0030.03312.41
5.2.160.0000.03012.41
5.2.150.0030.05012.41
5.2.140.0000.06712.41
5.2.130.0000.05012.41
5.2.120.0000.03012.41
5.2.110.0070.02312.41
5.2.100.0000.05312.41
5.2.90.0000.03012.41
5.2.80.0030.02312.41
5.2.70.0000.03012.41
5.2.60.0000.02712.41
5.2.50.0000.03012.41
5.2.40.0000.03012.41
5.2.30.0000.04012.41
5.2.20.0000.03012.41
5.2.10.0030.04712.41
5.2.00.0030.02312.41
5.1.60.0030.02012.41
5.1.50.0030.02312.41
5.1.40.0000.02712.41
5.1.30.0000.02712.41
5.1.20.0030.02312.41
5.1.10.0030.02312.41
5.1.00.0000.03712.41
5.0.50.0000.03012.41
5.0.40.0000.02312.41
5.0.30.0030.02312.41
5.0.20.0000.01712.41
5.0.10.0030.02712.41
5.0.00.0000.02712.41
4.4.90.0030.01012.41
4.4.80.0000.01312.41
4.4.70.0030.02712.41
4.4.60.0000.02312.41
4.4.50.0000.02012.41
4.4.40.0000.02312.41
4.4.30.0000.01312.41
4.4.20.0030.01012.41
4.4.10.0000.01312.41
4.4.00.0030.01712.41
4.3.110.0000.02312.41
4.3.100.0000.01312.41
4.3.90.0000.01312.41
4.3.80.0000.02312.41
4.3.70.0000.01312.41
4.3.60.0000.01312.41
4.3.50.0000.01712.41
4.3.40.0000.03012.41
4.3.30.0000.01712.41
4.3.20.0030.01312.41
4.3.10.0000.01312.41
4.3.00.0000.01312.41

preferences:
57.49 ms | 401 KiB | 5 Q