3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a','b','c','d','e']; $i = count($arr); foreach ($arr as $key => $value) { $arr[$i++] = $value; unset($arr[$key]); } var_dump($arr);

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)
8.3.60.0060.01118.27
8.3.50.0100.01121.14
8.3.40.0040.01118.57
8.3.30.0100.00319.13
8.3.20.0070.00020.38
8.3.10.0080.00020.53
8.3.00.0050.00319.38
8.2.180.0070.01316.38
8.2.170.0180.00422.96
8.2.160.0030.01320.38
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0140.00021.05
8.2.110.0040.00419.30
8.2.100.0080.00317.74
8.2.90.0050.00319.36
8.2.80.0030.00617.97
8.2.70.0030.00517.50
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0000.00819.95
8.2.30.0060.00318.12
8.2.20.0000.00717.70
8.2.10.0040.00418.21
8.2.00.0080.00017.74
8.1.280.0110.00725.92
8.1.270.0040.00423.97
8.1.260.0070.00026.35
8.1.250.0060.00328.09
8.1.240.0030.00920.52
8.1.230.0070.00420.86
8.1.220.0040.00417.79
8.1.210.0060.00318.77
8.1.200.0030.00617.35
8.1.190.0030.00517.22
8.1.180.0000.00818.10
8.1.170.0000.00818.57
8.1.160.0030.00521.92
8.1.150.0040.00418.91
8.1.140.0040.00417.44
8.1.130.0040.00417.80
8.1.120.0040.00417.46
8.1.110.0040.00317.41
8.1.100.0000.00817.41
8.1.90.0000.00817.48
8.1.80.0030.00317.38
8.1.70.0000.00717.37
8.1.60.0000.00817.42
8.1.50.0030.00517.57
8.1.40.0000.00817.52
8.1.30.0040.00417.51
8.1.20.0000.00817.68
8.1.10.0000.00817.37
8.1.00.0030.00617.36
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0050.00218.35
8.0.270.0040.00417.18
8.0.260.0020.00518.45
8.0.250.0070.00016.95
8.0.240.0000.00716.95
8.0.230.0000.00716.90
8.0.220.0030.00316.75
8.0.210.0050.00316.88
8.0.200.0030.00316.85
8.0.190.0030.00316.96
8.0.180.0040.00416.90
8.0.170.0050.00316.88
8.0.160.0040.00416.76
8.0.150.0050.00316.84
8.0.140.0070.00016.84
8.0.130.0050.00013.27
8.0.120.0000.00816.82
8.0.110.0000.00716.88
8.0.100.0000.00816.69
8.0.90.0000.00716.82
8.0.80.0100.00716.92
8.0.70.0030.00616.79
8.0.60.0040.00416.76
8.0.50.0000.00716.92
8.0.30.0110.01117.07
8.0.20.0090.01117.40
8.0.10.0040.00416.82
8.0.00.0090.01116.74
7.4.330.0020.00215.05
7.4.320.0000.00616.55
7.4.300.0000.00616.61
7.4.290.0000.00716.42
7.4.280.0050.00316.58
7.4.270.0000.00716.60
7.4.260.0070.00016.49
7.4.250.0070.00016.50
7.4.240.0040.00316.47
7.4.230.0070.00016.61
7.4.220.0160.01016.60
7.4.210.0060.00916.60
7.4.200.0000.00716.62
7.4.160.0080.00816.49
7.4.150.0080.01217.40
7.4.140.0140.00417.86
7.4.130.0090.01016.60
7.4.120.0120.00616.39
7.4.110.0100.00716.41
7.4.100.0070.01016.56
7.4.90.0090.00916.49
7.4.80.0070.01019.39
7.4.70.0030.01716.39
7.4.60.0070.01016.32
7.4.50.0030.00316.72
7.4.40.0060.01516.33
7.4.30.0040.01816.39
7.4.00.0000.01015.17
7.3.330.0020.00213.30
7.3.320.0020.00213.25
7.3.310.0050.00216.38
7.3.300.0040.00416.34
7.3.290.0130.00016.35
7.3.280.0070.00916.32
7.3.270.0050.01517.40
7.3.260.0110.00716.32
7.3.250.0100.00716.41
7.3.240.0110.00916.39
7.3.230.0080.01016.39
7.3.210.0130.00316.41
7.3.200.0060.01119.39
7.3.190.0090.00916.27
7.3.180.0100.01016.23
7.3.170.0160.00016.62
7.3.160.0110.00816.41
7.2.330.0000.02016.60
7.2.320.0100.00616.63
7.2.310.0090.00916.40
7.2.300.0060.00916.54
7.2.290.0090.00916.62
7.2.00.0150.00019.24
7.1.100.0000.01017.96
7.1.70.0060.00617.18
7.1.60.0040.01919.32
7.1.50.0000.01116.93
7.1.00.0030.07322.42
7.0.200.0040.00416.68
7.0.140.0070.07022.13
7.0.60.0130.08019.91
7.0.50.0030.04317.91
7.0.40.0070.05020.05
7.0.30.0430.07720.13
7.0.20.0200.06720.00
7.0.10.0000.04720.01
7.0.00.0130.07720.00
5.6.280.0070.07021.07
5.6.210.0030.07720.47
5.6.200.0100.04718.19
5.6.190.0100.06720.47
5.6.180.0570.05320.41
5.6.170.0170.04020.49
5.6.160.0070.08020.45
5.6.150.0100.07718.18
5.6.140.0000.07718.14
5.6.130.0070.08018.16
5.6.120.0100.08320.75
5.6.110.0000.09320.93
5.6.100.0030.09020.96
5.6.90.0130.07320.95
5.6.80.0130.06020.38
5.5.350.0170.05720.36
5.5.340.0030.05017.89
5.5.330.0000.07020.37
5.5.320.0300.04020.34
5.5.310.0470.05720.20
5.5.300.0170.06717.95
5.5.290.0170.06317.95
5.5.280.0170.07720.87
5.5.270.0000.05320.71
5.5.260.0100.08720.86
5.5.250.0070.08320.71
5.5.240.0230.07020.25
5.4.450.0670.04019.09
5.4.440.0300.04019.21
5.4.430.0370.04719.46
5.4.420.0670.00019.52
5.4.410.0900.00019.20
5.4.400.0630.00019.16
5.4.390.0600.00019.08
5.4.380.0630.00019.16
5.4.370.0600.00019.13
5.4.360.0600.00019.09
5.4.350.0630.00018.96
5.4.340.0600.00018.98
5.4.320.0090.03412.45
5.4.310.0090.03612.45
5.4.300.0060.03712.45
5.4.290.0090.03712.45
5.4.280.0080.03412.35
5.4.270.0100.03712.35
5.4.260.0070.05312.35
5.4.250.0070.04212.35
5.4.240.0060.03712.35
5.4.230.0080.03612.34
5.4.220.0080.04212.34
5.4.210.0090.03412.34
5.4.200.0060.04512.34
5.4.190.0070.03612.34
5.4.180.0110.03912.34
5.4.170.0100.03212.35
5.4.160.0080.03612.35
5.4.150.0080.03412.34
5.4.140.0050.03812.03
5.4.130.0060.03512.01
5.4.120.0090.03211.97
5.4.110.0080.03311.97
5.4.100.0050.03611.96
5.4.90.0060.03711.96
5.4.80.0100.03411.97
5.4.70.0050.03611.96
5.4.60.0080.03311.96
5.4.50.0070.03511.96
5.4.40.0120.02911.95
5.4.30.0110.03111.95
5.4.20.0040.03811.95
5.4.10.0080.03311.95
5.4.00.0060.05011.44
5.3.290.0080.03912.80
5.3.280.0090.03512.71
5.3.270.0060.03812.72
5.3.260.0060.03912.72
5.3.250.0130.04812.72
5.3.240.0060.04112.72
5.3.230.0050.03812.71
5.3.220.0060.03712.68
5.3.210.0070.03712.68
5.3.200.0070.03512.68
5.3.190.0080.03512.68
5.3.180.0060.03612.67
5.3.170.0080.03512.67
5.3.160.0060.03712.67
5.3.150.0080.03612.68
5.3.140.0050.03712.66
5.3.130.0080.03712.65
5.3.120.0090.03612.65
5.3.110.0090.03712.66
5.3.100.0060.03712.12
5.3.90.0060.03712.08
5.3.80.0070.03512.07
5.3.70.0040.04612.07
5.3.60.0060.03612.06
5.3.50.0090.03412.00
5.3.40.0070.03612.00
5.3.30.0100.03111.95
5.3.20.0060.03811.72
5.3.10.0050.03511.70
5.3.00.0050.03711.70
5.2.170.0060.0299.18
5.2.160.0050.0299.18
5.2.150.0050.0309.18
5.2.140.0090.0279.18
5.2.130.0050.0299.14
5.2.120.0030.0359.14
5.2.110.0050.0289.14
5.2.100.0040.0299.14
5.2.90.0040.0339.14
5.2.80.0080.0299.14
5.2.70.0030.0329.14
5.2.60.0030.0319.09
5.2.50.0070.0279.05
5.2.40.0040.0289.04
5.2.30.0060.0279.02
5.2.20.0050.0279.00
5.2.10.0060.0258.93
5.2.00.0040.0298.79
5.1.60.0070.0218.07
5.1.50.0060.0228.06
5.1.40.0020.0268.05
5.1.30.0060.0248.40
5.1.20.0050.0258.42
5.1.10.0060.0338.14
5.1.00.0070.0228.14
5.0.50.0050.0196.63
5.0.40.0030.0196.48
5.0.30.0030.0316.29
5.0.20.0050.0186.27
5.0.10.0040.0186.23
5.0.00.0040.0296.23
4.4.90.0020.0164.78
4.4.80.0040.0144.75
4.4.70.0020.0164.76
4.4.60.0040.0144.75
4.4.50.0040.0144.77
4.4.40.0030.0254.71
4.4.30.0030.0154.76
4.4.20.0020.0164.84
4.4.10.0000.0224.85
4.4.00.0030.0284.76
4.3.110.0020.0164.67
4.3.100.0030.0144.67
4.3.90.0030.0184.64
4.3.80.0020.0314.58
4.3.70.0030.0144.63
4.3.60.0010.0184.62
4.3.50.0040.0194.63
4.3.40.0050.0234.54
4.3.30.0020.0163.29
4.3.20.0040.0143.26
4.3.10.0020.0193.22
4.3.00.0070.01313.59

preferences:
41.63 ms | 400 KiB | 5 Q