3v4l.org

run code in 300+ PHP versions simultaneously
<?php $instance = new StdClass(); $assigned = $instance; $reference =& $instance; $instance->var = '$assigned будет иметь это значение'; $instance = new StdClass(); // $instance и $reference становятся null var_dump($instance); var_dump($reference); var_dump($assigned); ?>

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)
8.3.40.0090.00618.53
8.3.30.0120.00419.04
8.3.20.0000.00720.31
8.3.10.0040.00421.91
8.3.00.0040.00419.25
8.2.170.0090.00622.96
8.2.160.0030.01020.27
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0030.00626.16
8.2.120.0080.00021.03
8.2.110.0040.00421.96
8.2.100.0040.00818.22
8.2.90.0000.00819.22
8.2.80.0050.00317.97
8.2.70.0000.00817.60
8.2.60.0000.00817.80
8.2.50.0030.00618.07
8.2.40.0060.00319.64
8.2.30.0030.00618.00
8.2.20.0040.00417.62
8.2.10.0070.00018.00
8.2.00.0050.00317.66
8.1.270.0060.00323.92
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0040.00423.84
8.1.230.0100.00019.15
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0080.00317.23
8.1.190.0040.00417.23
8.1.180.0080.00018.10
8.1.170.0030.00618.55
8.1.160.0000.00721.96
8.1.150.0000.00718.75
8.1.140.0070.00317.32
8.1.130.0000.00717.84
8.1.120.0000.00717.45
8.1.110.0040.00417.43
8.1.100.0070.00017.35
8.1.90.0000.00917.39
8.1.80.0040.00417.41
8.1.70.0000.00717.29
8.1.60.0080.00017.55
8.1.50.0030.00517.39
8.1.40.0000.00817.41
8.1.30.0090.00017.64
8.1.20.0000.00817.53
8.1.10.0000.00817.52
8.1.00.0000.00717.38
8.0.300.0040.00418.77
8.0.290.0050.00216.75
8.0.280.0030.00318.46
8.0.270.0000.00717.12
8.0.260.0000.00617.29
8.0.250.0000.00816.85
8.0.240.0040.00416.80
8.0.230.0040.00416.83
8.0.220.0000.00716.86
8.0.210.0070.00016.83
8.0.200.0000.00916.83
8.0.190.0070.00016.77
8.0.180.0040.00416.87
8.0.170.0040.00416.84
8.0.160.0070.00016.80
8.0.150.0070.00016.69
8.0.140.0070.00016.73
8.0.130.0000.00513.27
8.0.120.0030.00516.83
8.0.110.0070.00016.87
8.0.100.0030.00516.79
8.0.90.0040.00416.79
8.0.80.0080.00716.75
8.0.70.0030.00316.84
8.0.60.0040.00416.68
8.0.50.0000.00716.87
8.0.30.0090.01116.96
8.0.20.0070.01117.40
8.0.10.0000.00816.82
8.0.00.0110.00716.58
7.4.330.0000.00515.00
7.4.320.0070.00016.45
7.4.300.0000.00616.44
7.4.290.0030.00316.60
7.4.280.0030.00516.39
7.4.270.0040.00416.58
7.4.260.0070.00016.40
7.4.250.0080.00016.48
7.4.240.0020.00616.54
7.4.230.0030.00316.62
7.4.220.0070.01116.35
7.4.210.0030.01716.50
7.4.200.0040.00416.65
7.4.160.0080.00816.31
7.4.150.0110.00717.40
7.4.140.0120.01017.86
7.4.130.0090.00816.35
7.4.120.0120.00916.45
7.4.110.0080.00916.39
7.4.100.0230.00316.49
7.4.90.0080.00816.41
7.4.80.0170.00319.39
7.4.70.0120.00416.42
7.4.60.0130.00316.38
7.4.50.0040.00416.56
7.4.40.0060.01616.29
7.4.30.0160.00416.38
7.4.00.0040.01114.74
7.3.330.0000.00513.12
7.3.320.0000.00513.09
7.3.310.0000.00716.24
7.3.300.0040.00416.26
7.3.290.0080.00616.23
7.3.280.0080.00816.30
7.3.270.0090.00917.40
7.3.260.0140.00416.33
7.3.250.0110.00716.41
7.3.240.0030.01416.66
7.3.230.0100.00716.50
7.3.210.0130.00416.46
7.3.200.0140.00319.39
7.3.190.0060.01216.32
7.3.180.0100.00716.58
7.3.170.0120.00416.47
7.3.160.0000.01516.33
7.2.330.0130.00316.49
7.2.320.0140.00316.55
7.2.310.0030.01316.64
7.2.300.0120.00316.48
7.2.290.0130.00916.31
7.2.60.0090.00616.86
7.2.00.0040.01119.34
7.1.200.0000.01115.56
7.1.100.0030.01017.86
7.1.70.0000.01517.05
7.1.60.0100.01419.46
7.1.50.0110.00716.93
7.1.00.0100.07022.54
7.0.200.0030.00716.78
7.0.140.0130.06722.04
7.0.60.0130.07319.92
7.0.50.0100.08017.90
7.0.40.0030.04720.04
7.0.30.0500.07020.13
7.0.20.0300.05720.16
7.0.10.0100.08320.17
7.0.00.0070.07020.13
5.6.280.0070.07020.89
5.6.210.0000.06020.56
5.6.200.0070.04318.21
5.6.190.0100.08020.61
5.6.180.0500.04020.45
5.6.170.0230.06320.54
5.6.160.0100.03320.44
5.6.150.0070.08318.11
5.6.140.0070.03718.14
5.6.130.0100.07718.16
5.6.120.0070.07320.75
5.6.110.0170.08021.08
5.6.100.0070.09021.00
5.6.90.0100.06320.88
5.6.80.0130.06020.38
5.5.350.0270.05020.44
5.5.340.0030.04017.91
5.5.330.0100.07020.07
5.5.320.0300.08020.27
5.5.310.0330.07720.23
5.5.300.0130.07317.95
5.5.290.0100.08017.90
5.5.280.0030.08720.80
5.5.270.0070.08020.86
5.5.260.0130.07720.89
5.5.250.0070.08020.61
5.5.240.0130.08020.28
5.4.450.0330.05019.46
5.4.440.0600.04319.48
5.4.430.0370.05319.42
5.4.420.0430.04319.13
5.4.410.0300.04719.33
5.4.400.0200.03719.24
5.4.390.0170.05019.06
5.4.380.0770.07018.65
5.4.370.0330.06318.73
5.4.360.0370.07018.59
5.4.350.0500.05718.69
5.4.340.0470.05318.61
5.4.320.0050.04112.45
5.4.310.0060.04012.45
5.4.300.0040.03812.46
5.4.290.0050.04212.45
5.4.280.0100.04712.35
5.4.270.0050.03912.35
5.4.260.0040.03812.35
5.4.250.0030.04012.35
5.4.240.0070.03512.35
5.4.230.0070.03612.34
5.4.220.0080.03612.34
5.4.210.0080.03412.34
5.4.200.0050.03912.34
5.4.190.0030.03912.34
5.4.180.0050.03712.34
5.4.170.0070.03512.35
5.4.160.0040.03812.35
5.4.150.0060.03912.34
5.4.140.0100.03812.03
5.4.130.0070.03912.01
5.4.120.0060.03511.97
5.4.110.0050.04011.96
5.4.100.0060.03511.96
5.4.90.0060.03711.97
5.4.80.0040.03911.97
5.4.70.0020.03911.96
5.4.60.0050.04011.96
5.4.50.0040.03611.96
5.4.40.0050.03511.95
5.4.30.0040.03711.95
5.4.20.0070.03511.95
5.4.10.0050.03611.95
5.4.00.0060.03811.44
5.3.290.0080.03812.80
5.3.280.0070.03612.71
5.3.270.0070.04412.73
5.3.260.0050.05412.71
5.3.250.0080.03612.72
5.3.240.0080.04312.72
5.3.230.0040.04312.71
5.3.220.0030.04212.68
5.3.210.0090.03612.68
5.3.200.0040.03812.68
5.3.190.0080.03512.68
5.3.180.0040.03912.67
5.3.170.0070.03512.67
5.3.160.0060.03712.67
5.3.150.0030.04312.68
5.3.140.0030.04012.66
5.3.130.0050.04012.66
5.3.120.0060.04012.66
5.3.110.0070.03812.66
5.3.100.0070.04212.12
5.3.90.0080.03412.08
5.3.80.0090.03312.07
5.3.70.0050.03712.07
5.3.60.0100.03412.06
5.3.50.0040.03812.00
5.3.40.0060.04112.00
5.3.30.0070.03511.94
5.3.20.0030.03811.72
5.3.10.0110.03811.69
5.3.00.0070.03911.68
5.2.170.0040.0309.18
5.2.160.0040.0319.18
5.2.150.0050.0309.17
5.2.140.0050.0309.17
5.2.130.0070.0269.13
5.2.120.0070.0299.13
5.2.110.0020.0319.14
5.2.100.0070.0329.14
5.2.90.0040.0299.13
5.2.80.0040.0309.14
5.2.70.0030.0319.14
5.2.60.0040.0309.09
5.2.50.0070.0339.05
5.2.40.0050.0309.03
5.2.30.0040.0309.01
5.2.20.0030.0309.00
5.2.10.0030.0298.92
5.2.00.0060.0338.78
5.1.60.0060.0328.06
5.1.50.0050.0308.05
5.1.40.0080.0208.04
5.1.30.0070.0238.39
5.1.20.0040.0268.41
5.1.10.0060.0248.14
5.1.00.0070.0258.14
5.0.50.0050.0286.61
5.0.40.0060.0196.47
5.0.30.0030.0316.28
5.0.20.0020.0306.26
5.0.10.0040.0206.23
5.0.00.0050.0326.23
4.4.90.0020.0154.78
4.4.80.0050.0124.75
4.4.70.0050.0154.75
4.4.60.0030.0154.75
4.4.50.0000.0184.77
4.4.40.0020.0254.71
4.4.30.0040.0144.76
4.4.20.0060.0174.84
4.4.10.0020.0164.85
4.4.00.0010.0264.76
4.3.110.0030.0164.67
4.3.100.0030.0144.67
4.3.90.0020.0154.63
4.3.80.0010.0254.58
4.3.70.0030.0144.63
4.3.60.0030.0144.63
4.3.50.0010.0184.63
4.3.40.0020.0254.54
4.3.30.0020.0153.28
4.3.20.0020.0163.26
4.3.10.0020.0153.21
4.3.00.0030.01715.68

preferences:
42.38 ms | 400 KiB | 5 Q