3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = []; $arr[] = &$arr; var_dump($arr, count($arr, COUNT_RECURSIVE));

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)
8.3.60.0170.00316.63
8.3.50.0110.00822.94
8.3.40.0060.01518.54
8.3.30.0070.00718.95
8.3.20.0050.00220.09
8.3.10.0000.00823.65
8.3.00.0050.00319.38
8.2.180.0070.01016.75
8.2.170.0070.00722.96
8.2.160.0100.00320.30
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0020.00526.16
8.2.120.0040.00421.04
8.2.110.0060.00321.09
8.2.100.0070.00318.02
8.2.90.0050.00318.03
8.2.80.0030.00717.97
8.2.70.0030.00517.93
8.2.60.0090.00018.04
8.2.50.0000.00818.10
8.2.40.0000.00720.42
8.2.30.0000.00819.20
8.2.20.0050.00317.69
8.2.10.0000.00718.08
8.2.00.0000.00717.48
8.1.280.0110.00725.92
8.1.270.0040.00423.96
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0090.00023.98
8.1.230.0070.00720.64
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0060.00317.23
8.1.180.0000.00818.10
8.1.170.0080.00018.57
8.1.160.0040.00418.92
8.1.150.0070.00020.06
8.1.140.0040.00417.34
8.1.130.0020.00517.86
8.1.120.0050.00217.40
8.1.110.0040.00417.30
8.1.100.0100.00017.38
8.1.90.0030.00417.32
8.1.80.0030.00517.35
8.1.70.0000.00717.32
8.1.60.0000.00717.47
8.1.50.0050.00317.43
8.1.40.0040.00417.46
8.1.30.0090.00017.61
8.1.20.0040.00417.47
8.1.10.0040.00417.32
8.1.00.0030.00617.26
8.0.300.0090.00021.50
8.0.290.0030.00516.88
8.0.280.0030.00318.34
8.0.270.0040.00417.07
8.0.260.0080.00018.43
8.0.250.0020.00516.94
8.0.240.0030.00316.94
8.0.230.0030.00316.92
8.0.220.0070.00016.77
8.0.210.0000.00716.76
8.0.200.0000.00616.94
8.0.190.0040.00416.98
8.0.180.0000.00716.87
8.0.170.0000.00816.86
8.0.160.0080.00016.96
8.0.150.0060.00316.70
8.0.140.0050.00316.75
8.0.130.0000.00513.27
8.0.120.0020.00516.81
8.0.110.0070.00016.85
8.0.100.0070.00016.89
8.0.90.0000.00716.94
8.0.80.0090.01216.90
8.0.70.0040.00416.74
8.0.60.0050.00316.88
8.0.50.0040.00416.86
8.0.30.0060.01217.00
8.0.20.0090.01117.40
8.0.10.0000.00917.04
8.0.00.0130.00816.77
7.4.330.0000.00515.00
7.4.320.0030.00316.50
7.4.300.0030.00316.41
7.4.290.0030.00316.45
7.4.280.0000.00716.46
7.4.270.0000.00816.45
7.4.260.0000.00716.50
7.4.250.0080.00016.38
7.4.240.0060.00216.49
7.4.230.0030.00316.54
7.4.220.0000.02116.61
7.4.210.0100.01316.45
7.4.200.0000.00716.18
7.4.160.0150.00016.65
7.4.150.0140.00317.40
7.4.140.0090.00917.86
7.4.130.0090.00916.40
7.4.120.0110.00516.41
7.4.110.0140.00316.41
7.4.100.0070.01016.43
7.4.90.0070.01016.43
7.4.80.0030.01419.39
7.4.70.0060.01516.47
7.4.60.0110.00616.43
7.4.50.0030.00616.41
7.4.40.0130.00316.34
7.4.30.0060.01016.57
7.4.00.0030.01414.86
7.3.330.0020.00413.09
7.3.320.0000.00513.00
7.3.310.0040.00416.21
7.3.300.0000.00716.12
7.3.290.0130.00616.26
7.3.280.0020.01216.25
7.3.270.0080.00817.40
7.3.260.0060.01016.36
7.3.240.0160.00016.47
7.3.230.0090.00616.39
7.3.210.0110.00616.24
7.3.200.0120.00819.39
7.3.190.0130.00616.38
7.3.180.0030.01316.47
7.3.170.0090.00616.29
7.3.160.0070.01016.48
7.2.330.0100.00716.57
7.2.320.0080.00816.51
7.2.310.0100.01316.58
7.2.300.0140.00416.39
7.2.290.0170.00016.61
7.2.00.0030.00919.23
7.1.100.0040.00817.93
7.1.70.0030.00516.97
7.1.60.0100.01419.40
7.1.50.0090.00616.85
7.1.00.0070.07322.44
7.0.200.0100.00714.97
7.0.140.0000.07721.95
7.0.60.0130.05719.86
7.0.50.0070.08017.80
7.0.40.0130.04720.30
7.0.30.0400.08320.30
7.0.20.0230.05020.04
7.0.10.0200.08020.01
7.0.00.0070.04320.12
5.6.280.0000.07321.07
5.6.210.0070.08020.56
5.6.200.0100.07718.19
5.6.190.0170.07020.61
5.6.180.3170.04020.35
5.6.170.0270.06320.49
5.6.160.0100.08020.48
5.6.150.0100.08018.11
5.6.140.0070.03718.11
5.6.130.0030.04018.07
5.6.120.0030.05721.13
5.6.110.0030.08020.97
5.6.100.0170.07720.98
5.6.90.0030.05021.13
5.6.80.0070.08320.35
5.5.350.0400.06720.31
5.5.340.0100.07017.87
5.5.330.0030.05020.19
5.5.320.0330.05720.29
5.5.310.0400.06720.27
5.5.300.0070.07717.94
5.5.290.0100.06017.98
5.5.280.0100.08320.76
5.5.270.0100.06020.75
5.5.260.0070.04020.72
5.5.250.0230.06720.65
5.5.240.0100.07020.26
5.4.450.0630.05319.58
5.4.440.0200.05319.40
5.4.430.0200.05319.33
5.4.420.0000.06719.54
5.4.410.0130.04718.70
5.4.400.1030.06018.69
5.4.390.0870.06318.49
5.4.380.0070.05318.50
5.4.370.0130.03718.74
5.4.360.0070.04018.50
5.4.350.0100.03911.97
5.4.340.0020.05111.96
5.4.320.0050.04612.45
5.4.310.0060.04812.45
5.4.300.0080.04812.45
5.4.290.0090.04712.45
5.4.280.0050.03612.35
5.4.270.0110.03712.34
5.4.260.0060.04712.34
5.4.250.0080.04112.35
5.4.240.0040.04112.35
5.4.230.0070.03712.34
5.4.220.0100.04212.34
5.4.210.0060.03412.34
5.4.200.0060.03612.34
5.4.190.0030.03812.33
5.4.180.0050.03612.34
5.4.170.0050.03612.34
5.4.160.0050.03612.34
5.4.150.0040.03712.34
5.4.140.0060.03612.02
5.4.130.0050.03612.01
5.4.120.0060.03411.97
5.4.110.0060.03411.96
5.4.100.0070.03211.96
5.4.90.0100.03911.96
5.4.80.0080.03411.96
5.4.70.0030.03711.96
5.4.60.0090.03011.96
5.4.50.0040.03611.96
5.4.40.0080.03111.95
5.4.30.0040.03611.95
5.4.20.0090.04711.95
5.4.10.0080.03411.94
5.4.00.0030.03711.43
5.3.290.0060.05412.80
5.3.280.0050.03812.71
5.3.270.0050.03812.73
5.3.260.0090.03912.72
5.3.250.0050.03612.72
5.3.240.0070.04612.72
5.3.230.0080.03712.71
5.3.220.0070.03512.68
5.3.210.0070.05112.68
5.3.200.0060.03412.68
5.3.190.0080.03312.68
5.3.180.0050.03612.67
5.3.170.0100.04512.67
5.3.160.0050.04412.68
5.3.150.0060.03912.67
5.3.140.0080.03912.66
5.3.130.0090.03912.66
5.3.120.0080.04512.66
5.3.110.0100.03912.66
5.3.100.0040.03812.12
5.3.90.0050.03612.09
5.3.80.0080.04012.07
5.3.70.0070.03412.07
5.3.60.0070.03312.06
5.3.50.0090.03212.00
5.3.40.0030.03812.00
5.3.30.0100.03711.95
5.3.20.0060.04011.72
5.3.10.0050.03911.70
5.3.00.0090.03311.68
5.2.170.0050.0299.18
5.2.160.0060.0289.18
5.2.150.0030.0329.18
5.2.140.0070.0289.18
5.2.130.0060.0299.14
5.2.120.0050.0369.14
5.2.110.0070.0279.15
5.2.100.0050.0279.14
5.2.90.0060.0279.14
5.2.80.0060.0289.14
5.2.70.0060.0279.14
5.2.60.0040.0299.08
5.2.50.0050.0299.05
5.2.40.0060.0269.03
5.2.30.0030.0309.02
5.2.20.0050.0329.00
5.2.10.0030.0328.93
5.2.00.0060.0268.78
5.1.60.0030.0248.07
5.1.50.0040.0248.07
5.1.40.0030.0258.05
5.1.30.0070.0228.40
5.1.20.0020.0398.42
5.1.10.0050.0248.14
5.1.00.0060.0318.14
5.0.50.0050.0186.63
5.0.40.0020.0206.48
5.0.30.0050.0466.29
5.0.20.0050.0206.26
5.0.10.0090.0196.23
5.0.00.0050.0296.23
4.4.90.0030.0154.78
4.4.80.0030.0144.76
4.4.70.0020.0164.76
4.4.60.0040.0144.75
4.4.50.0010.0174.77
4.4.40.0030.0254.71
4.4.30.0020.0174.76
4.4.20.0030.0184.84
4.4.10.0030.0174.85
4.4.00.0030.0264.76
4.3.110.0020.0164.67
4.3.100.0020.0154.67
4.3.90.0020.0154.64
4.3.80.0050.0244.58
4.3.70.0050.0184.63
4.3.60.0030.0154.63
4.3.50.0030.0154.63
4.3.40.0030.0244.54
4.3.30.0010.0193.28
4.3.20.0000.0193.25
4.3.10.0020.0263.21
4.3.00.0130.0207.13

preferences:
44.83 ms | 401 KiB | 5 Q