3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $items = [1,2,3]; function &getItems() { return $this->items; } } $foo = new Foo(); foreach($foo->getItems() as &$item) { echo $item, PHP_EOL; $item = '-1'; } var_dump($foo->getItems());

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)
8.3.60.0090.00916.50
8.3.50.0120.00821.98
8.3.40.0110.00718.71
8.3.30.0070.00718.71
8.3.20.0040.00420.21
8.3.10.0040.00421.91
8.3.00.0040.00419.38
8.2.180.0160.00618.16
8.2.170.0120.00622.96
8.2.160.0140.00020.53
8.2.150.0030.00624.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0050.00319.36
8.2.110.0060.00321.06
8.2.100.0070.00417.75
8.2.90.0000.00819.18
8.2.80.0060.00317.97
8.2.70.0060.00317.63
8.2.60.0040.00418.04
8.2.50.0040.00418.07
8.2.40.0000.00819.84
8.2.30.0050.00217.98
8.2.20.0040.00417.75
8.2.10.0070.00018.18
8.2.00.0050.00217.65
8.1.280.0110.01125.92
8.1.270.0060.00320.52
8.1.260.0070.00026.35
8.1.250.0050.00328.09
8.1.240.0080.00023.83
8.1.230.0090.00318.79
8.1.220.0040.00417.77
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0000.00817.35
8.1.180.0000.00818.10
8.1.170.0030.00718.50
8.1.160.0070.00022.07
8.1.150.0020.00518.90
8.1.140.0000.00717.45
8.1.130.0030.00317.74
8.1.120.0060.00317.49
8.1.110.0030.00517.53
8.1.100.0040.00417.34
8.1.90.0020.00517.37
8.1.80.0000.00917.45
8.1.70.0000.00717.34
8.1.60.0030.00617.54
8.1.50.0000.00717.52
8.1.40.0030.00517.50
8.1.30.0060.00317.57
8.1.20.0040.00417.66
8.1.10.0000.00717.48
8.1.00.0050.00317.40
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0050.00218.46
8.0.270.0000.00717.26
8.0.260.0000.00717.30
8.0.250.0050.00216.92
8.0.240.0050.00216.99
8.0.230.0000.00716.94
8.0.220.0030.00316.77
8.0.210.0020.00516.91
8.0.200.0030.00316.87
8.0.190.0090.00016.86
8.0.180.0050.00316.94
8.0.170.0040.00416.91
8.0.160.0030.00316.92
8.0.150.0070.00016.91
8.0.140.0040.00316.85
8.0.130.0060.00013.28
8.0.120.0040.00416.83
8.0.110.0050.00316.80
8.0.100.0040.00416.93
8.0.90.0000.00716.72
8.0.80.0040.01216.89
8.0.70.0000.00716.79
8.0.60.0030.00516.94
8.0.50.0040.00416.79
8.0.30.0070.01317.07
8.0.20.0270.01817.40
8.0.10.0070.00017.05
8.0.00.0090.00816.65
7.4.330.0020.00215.14
7.4.320.0000.00716.59
7.4.300.0030.00316.42
7.4.290.0000.00716.59
7.4.280.0000.00816.54
7.4.270.0030.00316.50
7.4.260.0040.00416.63
7.4.250.0040.00416.48
7.4.240.0030.00516.53
7.4.230.0030.00316.49
7.4.220.0130.01316.56
7.4.210.0070.01016.52
7.4.200.0000.00716.67
7.4.160.0120.00416.66
7.4.150.0120.00617.40
7.4.140.0130.00817.86
7.4.130.0090.00816.49
7.4.120.0120.00516.42
7.4.110.0110.01516.44
7.4.100.0060.01816.68
7.4.90.0060.01316.33
7.4.80.0160.00619.39
7.4.70.0090.01316.63
7.4.60.0030.01316.68
7.4.50.0000.00416.35
7.4.40.0110.00616.58
7.4.30.0090.01316.43
7.4.00.0000.01414.95
7.3.330.0000.00513.14
7.3.320.0060.00613.33
7.3.310.0030.00316.20
7.3.300.0000.00716.27
7.3.290.0000.00716.35
7.3.280.0080.00716.25
7.3.270.0060.01217.40
7.3.260.0130.01016.64
7.3.250.0120.00516.41
7.3.240.0110.00716.26
7.3.230.0100.01416.39
7.3.210.0130.00316.28
7.3.200.0140.00319.39
7.3.190.0160.00316.62
7.3.180.0100.01016.12
7.3.170.0100.00816.44
7.3.160.0110.00716.36
7.2.330.0030.01416.84
7.2.320.0070.01116.58
7.2.310.0120.00616.72
7.2.300.0090.01716.69
7.2.290.0170.00616.77
7.2.60.0080.00416.69
7.1.200.0030.01015.64
7.1.70.0000.00716.94
7.1.60.0070.01119.50
7.1.50.0070.01416.88
7.1.00.0000.08022.38
7.0.200.0600.01014.89
7.0.140.0000.07722.04
7.0.60.0030.06720.02
7.0.50.0100.08317.86
7.0.40.0100.07019.96
7.0.30.0230.05720.34
7.0.20.0200.06720.15
7.0.10.0230.07320.25
7.0.00.0070.04020.06
5.6.210.0230.05720.51
5.6.200.0030.08318.28
5.6.190.0030.06320.61
5.6.180.0430.05320.45
5.6.170.0270.08320.71
5.6.160.0030.04020.39
5.6.150.0000.06718.15
5.6.140.0070.07718.21
5.6.130.0070.06718.27
5.6.120.0100.08321.15
5.6.110.0070.03720.98
5.6.100.0100.07320.97
5.6.90.0100.07320.96
5.6.80.0170.06720.39
5.6.70.0170.08020.35
5.5.350.0200.06320.32
5.5.340.0030.08317.98
5.5.330.0030.04320.40
5.5.320.0200.03320.27
5.5.310.0370.07020.33
5.5.300.0030.07017.97
5.5.290.0070.08017.96
5.5.280.0000.04320.68
5.5.270.0030.04320.87
5.5.260.0070.04720.96
5.5.250.0100.06720.69
5.5.240.0070.07020.16
5.4.450.0270.07019.48
5.4.440.0200.07719.41
5.4.430.0200.04019.45
5.4.420.0230.07719.20
5.4.410.0500.05019.44
5.4.400.0270.05719.32
5.4.390.0200.07319.00
5.4.380.0200.04319.09
5.4.370.0200.03318.95
5.4.360.0170.07019.13
5.4.350.0170.05018.98
5.4.340.0200.03719.16
5.4.320.0170.05018.98
5.4.310.0170.03719.23
5.4.300.0170.03719.09
5.4.290.0170.05319.13
5.4.280.0130.04319.16
5.4.270.0100.04319.13
5.4.260.0230.03319.05
5.4.250.0170.03719.24
5.4.240.0230.04319.05
5.4.230.0170.04019.18
5.4.220.0100.04319.21
5.4.210.0200.03319.14
5.4.200.0200.03319.08
5.4.190.0170.03718.95
5.4.180.0170.03718.98
5.4.170.0230.04319.16
5.4.160.0230.05019.18
5.4.150.0200.04719.20
5.4.140.0100.05316.36
5.4.130.0100.05316.35
5.4.120.0230.03716.35
5.4.110.0170.05016.54
5.4.100.0230.04016.45
5.4.90.0200.03716.55
5.4.80.0200.06716.57
5.4.70.0270.05016.50
5.4.60.0170.04316.19
5.4.50.0230.02716.22
5.4.40.0300.03316.52
5.4.30.0200.07016.52
5.4.20.0270.03716.42
5.4.10.0100.06016.18
5.4.00.0130.04316.01
5.3.290.0170.04014.64
5.3.280.0100.05014.67
5.3.270.0270.03714.46
5.3.260.0230.04014.57
5.3.250.0100.03714.69
5.3.240.0170.04714.51
5.3.230.0130.04014.71
5.3.220.0170.04314.47
5.3.210.0230.03014.55
5.3.200.0300.03314.55
5.3.190.0130.04014.71
5.3.180.0270.04014.46
5.3.170.0070.05014.55
5.3.160.0170.06314.47
5.3.150.0200.07714.55
5.3.140.0170.03714.52
5.3.130.0130.04014.54
5.3.120.0200.06714.54
5.3.110.0170.08014.61
5.3.100.0130.04014.05
5.3.90.0200.03713.99
5.3.80.0130.08013.93
5.3.70.0230.05713.99
5.3.60.0100.05014.14
5.3.50.0270.03314.06
5.3.40.0070.04714.05
5.3.30.0270.03313.83
5.3.20.0170.04013.69
5.3.10.0300.05713.73
5.3.00.0230.03313.75
5.2.170.0130.05311.05
5.2.160.0100.05011.12
5.2.150.0130.04011.11
5.2.140.0130.05311.04
5.2.130.0100.03311.18
5.2.120.0130.02711.05
5.2.110.0030.04711.07
5.2.100.0100.03311.21
5.2.90.0200.02711.03
5.2.80.0230.02711.21
5.2.70.0170.02311.18
5.2.60.0100.03310.96
5.2.50.0200.03011.04
5.2.40.0130.02710.96
5.2.30.0070.03310.89
5.2.20.0130.02710.96
5.2.10.0130.02710.97
5.2.00.0130.02310.79
5.1.60.0130.0209.97
5.1.50.0070.02710.14
5.1.40.0100.03010.20
5.1.30.0130.02710.45
5.1.20.0100.02710.36
5.1.10.0100.0279.97
5.1.00.0070.03010.21
5.0.50.0070.0209.34
5.0.40.0030.0209.34
5.0.30.0070.0309.34
5.0.20.0070.0179.34
5.0.10.0070.0209.34
5.0.00.0070.0339.34
4.4.90.0030.0179.34
4.4.80.0030.0179.34
4.4.70.0070.0179.34
4.4.60.0030.0179.34
4.4.50.0070.0139.34
4.4.40.0070.0379.34
4.4.30.0100.0109.34
4.4.20.0070.0139.34
4.4.10.0030.0179.34
4.4.00.0070.0239.34
4.3.110.0070.0139.34
4.3.100.0070.0139.34
4.3.90.0070.0139.34
4.3.80.0070.0239.34
4.3.70.0070.0139.34
4.3.60.0030.0179.34
4.3.50.0070.0139.34
4.3.40.0030.0239.34
4.3.30.0000.0179.34
4.3.20.0030.0139.34
4.3.10.0030.0139.34
4.3.00.0030.0139.34

preferences:
62.3 ms | 401 KiB | 5 Q