3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a','b','c','d','e']; $i = 1; foreach ($arr as $key => $value) { $child[$i++] = $value; unset($child[$key]); } var_dump($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)
8.3.60.0140.00318.13
8.3.50.0090.00921.20
8.3.40.0070.00718.71
8.3.30.0070.00719.17
8.3.20.0050.00220.04
8.3.10.0000.00820.54
8.3.00.0080.00019.38
8.2.180.0080.00816.63
8.2.170.0140.00722.96
8.2.160.0000.01420.52
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0040.00422.29
8.2.110.0050.00520.41
8.2.100.0090.00318.03
8.2.90.0000.00818.93
8.2.80.0060.00317.97
8.2.70.0030.00617.50
8.2.60.0040.00417.90
8.2.50.0000.00818.07
8.2.40.0000.00819.88
8.2.30.0060.00318.12
8.2.20.0040.00417.72
8.2.10.0040.00417.99
8.2.00.0040.00417.78
8.1.280.0150.00625.92
8.1.270.0040.00423.97
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0030.00623.97
8.1.230.0070.00318.99
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0100.00017.35
8.1.190.0050.00317.35
8.1.180.0000.00718.10
8.1.170.0040.00418.53
8.1.160.0000.00722.00
8.1.150.0040.00418.92
8.1.140.0000.00717.47
8.1.130.0000.00717.82
8.1.120.0000.00717.47
8.1.110.0000.00817.35
8.1.100.0000.00817.46
8.1.90.0040.00417.40
8.1.80.0040.00417.44
8.1.70.0000.00817.25
8.1.60.0000.00817.60
8.1.50.0000.00817.47
8.1.40.0030.00517.39
8.1.30.0000.00817.62
8.1.20.0040.00417.62
8.1.10.0000.00717.43
8.1.00.0000.01017.47
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.30
8.0.270.0000.00717.25
8.0.260.0070.00017.25
8.0.250.0030.00316.84
8.0.240.0040.00416.92
8.0.230.0000.00816.94
8.0.220.0080.00016.86
8.0.210.0000.00616.77
8.0.200.0040.00416.96
8.0.190.0040.00416.93
8.0.180.0020.00516.95
8.0.170.0040.00416.79
8.0.160.0040.00416.83
8.0.150.0000.00716.80
8.0.140.0030.00516.72
8.0.130.0000.00613.35
8.0.120.0040.00416.75
8.0.110.0040.00416.82
8.0.100.0000.00816.70
8.0.90.0000.00716.77
8.0.80.0000.01516.93
8.0.70.0000.00716.66
8.0.60.0000.00716.81
8.0.50.0030.00516.95
8.0.30.0120.00717.00
8.0.20.0090.01117.40
8.0.10.0040.00416.85
8.0.00.0060.01116.80
7.4.330.0020.00215.19
7.4.320.0030.00316.50
7.4.300.0030.00316.57
7.4.290.0060.00016.60
7.4.280.0070.00016.59
7.4.270.0040.00416.61
7.4.260.0000.00716.60
7.4.250.0050.00216.55
7.4.240.0020.00516.55
7.4.230.0030.00316.47
7.4.220.0160.01016.69
7.4.210.0030.01016.50
7.4.200.0070.00016.66
7.4.160.0090.00616.65
7.4.150.0100.00917.40
7.4.140.0110.00617.86
7.4.130.0090.01016.55
7.4.120.0090.00816.59
7.4.110.0080.00816.52
7.4.100.0080.00916.36
7.4.90.0090.01216.61
7.4.80.0140.00719.39
7.4.70.0140.00316.41
7.4.60.0100.00716.48
7.4.50.0000.00716.47
7.4.40.0100.01016.43
7.4.30.0120.00916.58
7.4.00.0070.00414.89
7.3.330.0030.00213.16
7.3.320.0030.00313.20
7.3.310.0070.00016.28
7.3.300.0060.00016.23
7.3.290.0070.00716.34
7.3.280.0110.00616.33
7.3.270.0040.01517.40
7.3.260.0140.00416.42
7.3.250.0050.01216.41
7.3.240.0070.01016.44
7.3.230.0050.01116.63
7.3.210.0140.00316.41
7.3.200.0070.01319.39
7.3.190.0060.01116.54
7.3.180.0040.01216.39
7.3.170.0060.01016.30
7.3.160.0110.00416.36
7.2.330.0130.00616.43
7.2.320.0110.00516.67
7.2.310.0130.00416.61
7.2.300.0130.00316.63
7.2.290.0130.00316.65
7.2.60.0070.00416.68
7.2.00.0060.00619.21
7.1.200.0040.00815.86
7.1.100.0110.00018.17
7.1.70.0060.00316.84
7.1.60.0100.01419.32
7.1.50.0090.01316.92
7.1.00.0070.08322.45
7.0.200.0040.00416.86
7.0.140.0030.07022.07
7.0.60.0030.06319.96
7.0.50.0030.08317.81
7.0.40.0000.09320.13
7.0.30.0270.08020.00
7.0.20.0330.07320.13
7.0.10.0070.08720.12
7.0.00.0100.08720.19
5.6.280.0030.07320.86
5.6.210.0130.06320.50
5.6.200.0030.05318.13
5.6.190.0100.08020.64
5.6.180.0370.04020.43
5.6.170.0270.04320.33
5.6.160.0000.05720.50
5.6.150.0130.04318.22
5.6.140.0030.05318.21
5.6.130.0130.04718.06
5.6.120.0170.07321.02
5.6.110.0130.07321.14
5.6.100.0070.05721.04
5.6.90.0200.06321.18
5.6.80.0030.06720.38
5.5.350.0070.03720.46
5.5.340.0030.04018.02
5.5.330.0030.08320.14
5.5.320.0430.07320.24
5.5.310.0430.06320.27
5.5.300.0100.06317.91
5.5.290.0100.07718.00
5.5.280.0100.08020.74
5.5.270.0200.07720.75
5.5.260.0070.07320.64
5.5.250.0100.08020.68
5.5.240.0300.05720.23
5.4.450.0530.03319.23
5.4.440.0300.04719.43
5.4.430.0470.04719.45
5.4.420.0670.00019.42
5.4.410.0630.00019.19
5.4.400.0630.00019.17
5.4.390.0630.00018.98
5.4.380.0670.00019.13
5.4.370.0630.00019.05
5.4.360.0630.00018.95
5.4.350.0630.00019.18
5.4.340.0630.00018.98
5.4.320.0050.04012.46
5.4.310.0050.03812.45
5.4.300.0080.03912.46
5.4.290.0010.04312.45
5.4.280.0090.03612.35
5.4.270.0040.03812.35
5.4.260.0040.03912.35
5.4.250.0080.03512.35
5.4.240.0050.03712.35
5.4.230.0050.03912.34
5.4.220.0050.03712.34
5.4.210.0070.04812.34
5.4.200.0060.03812.34
5.4.190.0130.02912.34
5.4.180.0030.03912.34
5.4.170.0060.03612.35
5.4.160.0030.03912.35
5.4.150.0060.03612.34
5.4.140.0050.03912.02
5.4.130.0060.04012.02
5.4.120.0100.03411.97
5.4.110.0040.03811.97
5.4.100.0050.03611.97
5.4.90.0070.03611.97
5.4.80.0080.03511.97
5.4.70.0070.03411.96
5.4.60.0060.03511.96
5.4.50.0070.03511.96
5.4.40.0110.02911.95
5.4.30.0030.03811.95
5.4.20.0030.03811.95
5.4.10.0050.03611.95
5.4.00.0070.03911.44
5.3.290.0050.04012.80
5.3.280.0110.03312.71
5.3.270.0040.04112.72
5.3.260.0080.03712.71
5.3.250.0100.03412.72
5.3.240.0110.03512.72
5.3.230.0050.03912.71
5.3.220.0060.03712.68
5.3.210.0040.04112.68
5.3.200.0050.03812.68
5.3.190.0070.03712.68
5.3.180.0070.03512.68
5.3.170.0070.03512.67
5.3.160.0050.03612.68
5.3.150.0070.03612.68
5.3.140.0090.03212.66
5.3.130.0040.04412.66
5.3.120.0040.04012.66
5.3.110.0080.04012.66
5.3.100.0080.04312.12
5.3.90.0060.03912.08
5.3.80.0100.03112.07
5.3.70.0050.03612.07
5.3.60.0110.03812.06
5.3.50.0110.03712.00
5.3.40.0060.03512.00
5.3.30.0080.04011.95
5.3.20.0130.03311.72
5.3.10.0080.04411.70
5.3.00.0050.03611.68
5.2.170.0030.0319.18
5.2.160.0060.0299.18
5.2.150.0040.0329.18
5.2.140.0060.0309.18
5.2.130.0100.0439.14
5.2.120.0050.0409.14
5.2.110.0050.0369.14
5.2.100.0060.0279.14
5.2.90.0020.0319.14
5.2.80.0080.0269.14
5.2.70.0060.0289.13
5.2.60.0020.0329.09
5.2.50.0060.0309.05
5.2.40.0060.0389.03
5.2.30.0050.0409.02
5.2.20.0060.0269.00
5.2.10.0090.0228.93
5.2.00.0070.0328.78
5.1.60.0060.0228.07
5.1.50.0050.0238.06
5.1.40.0040.0248.05
5.1.30.0070.0238.40
5.1.20.0050.0258.42
5.1.10.0060.0238.14
5.1.00.0040.0258.14
5.0.50.0030.0206.63
5.0.40.0030.0196.48
5.0.30.0020.0326.29
5.0.20.0050.0236.27
5.0.10.0030.0256.24
5.0.00.0060.0326.23
4.4.90.0020.0164.78
4.4.80.0040.0194.75
4.4.70.0040.0294.75
4.4.60.0060.0164.75
4.4.50.0040.0154.77
4.4.40.0020.0294.71
4.4.30.0020.0214.75
4.4.20.0030.0154.85
4.4.10.0050.0124.85
4.4.00.0030.0244.76
4.3.110.0030.0154.67
4.3.100.0050.0154.66
4.3.90.0020.0194.64
4.3.80.0020.0254.58
4.3.70.0030.0224.63
4.3.60.0040.0144.63
4.3.50.0020.0154.62
4.3.40.0060.0254.54
4.3.30.0010.0163.28
4.3.20.0010.0163.26
4.3.10.0030.0143.22
4.3.00.0170.02313.59

preferences:
46.28 ms | 401 KiB | 5 Q