3v4l.org

run code in 300+ PHP versions simultaneously
<?php function dot($array, $prepend = '') { $results = array(); if (!$array) return []; foreach ($array as $key => $value) { if (is_array($value)) { $results = array_merge($results, dot($value, $prepend.$key.'.')); if ($key === 'foo') print_r($results); } else { $results[$prepend.$key] = $value; } } return $results; } $array = [ 'foo' => [], 'bar' => [ 'baz' => 1 ], ]; print_r(dot($array, 'prefix'));

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)
8.3.60.0060.01218.39
8.3.50.0130.00522.05
8.3.40.0150.00018.97
8.3.30.0000.01419.08
8.3.20.0080.00020.21
8.3.10.0000.00823.27
8.3.00.0000.00819.38
8.2.180.0060.01616.50
8.2.170.0120.00622.96
8.2.160.0030.01020.39
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0070.00022.23
8.2.110.0030.00721.18
8.2.100.0090.00317.85
8.2.90.0000.00919.14
8.2.80.0060.00317.97
8.2.70.0080.00017.75
8.2.60.0040.00417.93
8.2.50.0000.00818.10
8.2.40.0060.00318.28
8.2.30.0000.00818.21
8.2.20.0040.00417.66
8.2.10.0080.00018.00
8.2.00.0000.00817.81
8.1.280.0110.01125.92
8.1.270.0060.00324.01
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0100.00721.34
8.1.230.0060.00617.70
8.1.220.0000.00817.78
8.1.210.0030.00618.77
8.1.200.0030.00617.13
8.1.190.0040.00417.22
8.1.180.0030.00518.10
8.1.170.0030.00520.48
8.1.160.0000.00721.93
8.1.150.0040.00418.89
8.1.140.0080.00017.42
8.1.130.0030.00317.74
8.1.120.0000.00717.43
8.1.110.0070.00017.49
8.1.100.0070.00017.47
8.1.90.0000.00717.50
8.1.80.0030.00317.30
8.1.70.0040.00417.39
8.1.60.0110.00317.52
8.1.50.0040.00417.41
8.1.40.0040.00417.55
8.1.30.0040.00417.55
8.1.20.0030.00517.55
8.1.10.0030.00517.56
8.1.00.0030.00617.52
8.0.300.0000.00918.77
8.0.290.0000.00716.75
8.0.280.0030.00318.43
8.0.270.0040.00417.18
8.0.260.0000.00617.23
8.0.250.0020.00516.85
8.0.240.0030.00317.00
8.0.230.0030.00316.90
8.0.220.0000.00716.79
8.0.210.0030.00316.95
8.0.200.0000.00816.89
8.0.190.0040.00417.02
8.0.180.0040.00416.80
8.0.170.0040.00416.81
8.0.160.0030.00316.94
8.0.150.0040.00416.81
8.0.140.0000.00716.91
8.0.130.0000.00613.41
8.0.120.0040.00416.79
8.0.110.0050.00316.83
8.0.100.0000.00716.95
8.0.90.0050.00216.68
8.0.80.0130.00616.79
8.0.70.0040.00416.96
8.0.60.0040.00416.91
8.0.50.0050.00216.84
8.0.30.0110.01017.07
8.0.20.0170.00617.40
8.0.10.0000.00716.96
8.0.00.0120.00916.80
7.4.330.0050.00315.02
7.4.320.0030.00316.50
7.4.300.0030.00316.51
7.4.290.0000.00716.52
7.4.280.0070.00016.45
7.4.270.0020.00516.42
7.4.260.0040.00416.51
7.4.250.0090.00016.59
7.4.240.0040.00316.58
7.4.230.0040.00416.59
7.4.220.0040.01416.45
7.4.210.0030.01216.63
7.4.200.0000.00716.39
7.4.160.0070.01016.54
7.4.150.0100.01417.40
7.4.140.0110.00817.86
7.4.130.0120.00516.57
7.4.120.0080.01016.51
7.4.110.0030.01416.70
7.4.100.0090.00916.55
7.4.90.0070.01016.54
7.4.80.0070.01019.39
7.4.70.0130.00916.53
7.4.60.0030.01316.57
7.4.50.0030.00516.48
7.4.40.0120.00916.34
7.4.30.0090.01016.66
7.4.00.0000.01714.92
7.3.330.0000.00613.39
7.3.320.0060.00013.32
7.3.310.0040.00416.23
7.3.300.0070.00016.24
7.3.290.0090.00616.41
7.3.280.0120.00716.34
7.3.270.0120.00617.40
7.3.260.0070.01116.36
7.3.250.0130.00516.40
7.3.240.0090.00916.31
7.3.230.0060.01216.57
7.3.210.0070.01016.66
7.3.200.0110.01119.39
7.3.190.0030.01516.37
7.3.180.0100.00716.66
7.3.170.0030.01316.63
7.3.160.0090.00916.42
7.2.330.0120.00616.45
7.2.320.0080.00816.51
7.2.310.0070.01016.77
7.2.300.0140.00316.83
7.2.290.0170.00816.71
7.2.60.0230.00516.98
7.2.00.0030.01019.06
7.1.200.0060.00915.93
7.1.100.0040.01118.18
7.1.70.0000.00917.19
7.1.60.0090.01519.32
7.1.50.0100.01417.06
7.1.00.0100.07022.36
7.0.200.0000.01116.64
7.0.140.0030.07322.09
7.0.60.0030.06019.91
7.0.50.0130.05317.84
7.0.40.0100.03720.20
7.0.30.0200.05720.27
7.0.20.0370.04020.09
7.0.10.0070.04320.25
7.0.00.0070.05320.22
5.6.280.0030.07020.82
5.6.210.0030.08320.46
5.6.200.0130.05018.18
5.6.190.0100.09020.58
5.6.180.0330.05320.54
5.6.170.0270.06720.46
5.6.160.0000.05720.54
5.6.150.0000.08318.12
5.6.140.0100.06018.29
5.6.130.0130.07318.11
5.6.120.0070.05021.14
5.6.110.0100.03320.96
5.6.100.0170.06721.02
5.6.90.0070.04321.00
5.6.80.0070.08020.39
5.6.70.4270.03320.54
5.5.350.0230.04320.50
5.5.340.0070.05717.95
5.5.330.0030.04720.35
5.5.320.0230.04320.27
5.5.310.0270.03020.24
5.5.300.0000.05717.95
5.5.290.0070.07018.03
5.5.280.0100.04720.88
5.5.270.0030.06720.73
5.5.260.0100.05020.76
5.5.250.0030.04020.66
5.5.240.0230.04020.04
5.4.450.0770.06319.48
5.4.440.0730.06319.55
5.4.430.0170.05019.59
5.4.420.0200.04719.58
5.4.410.0200.04719.34
5.4.400.0170.05019.02
5.4.390.0200.05719.03
5.4.380.0100.05719.37
5.4.370.0130.05019.14
5.4.360.0130.05719.27
5.4.350.0300.03719.29
5.4.340.0080.03312.02
5.4.320.0050.03912.51
5.4.310.0060.03912.50
5.4.300.0080.03612.50
5.4.290.0060.03812.50
5.4.280.0070.03412.40
5.4.270.0030.03912.40
5.4.260.0040.03912.39
5.4.250.0060.03712.40
5.4.240.0080.03412.39
5.4.230.0070.03612.39
5.4.220.0040.03812.39
5.4.210.0050.03812.39
5.4.200.0050.03912.39
5.4.190.0050.03812.39
5.4.180.0050.03912.39
5.4.170.0040.04212.39
5.4.160.0080.03612.39
5.4.150.0070.03512.39
5.4.140.0060.03712.07
5.4.130.0060.03512.06
5.4.120.0040.03712.02
5.4.110.0070.03412.02
5.4.100.0070.03512.01
5.4.90.0100.03312.01
5.4.80.0030.03912.02
5.4.70.0040.03612.01
5.4.60.0070.03412.01
5.4.50.0050.03612.01
5.4.40.0050.03512.00
5.4.30.0050.03512.00
5.4.20.0040.03712.00
5.4.10.0050.03511.99
5.4.00.0050.03611.48
5.3.290.0060.04012.80
5.3.280.0040.03812.71
5.3.270.0070.03812.72
5.3.260.0070.04012.71
5.3.250.0050.03812.72
5.3.240.0080.03612.72
5.3.230.0090.04212.71
5.3.220.0040.04012.68
5.3.210.0060.04012.68
5.3.200.0060.03712.68
5.3.190.0080.03612.68
5.3.180.0040.03912.68
5.3.170.0070.03812.66
5.3.160.0050.04112.67
5.3.150.0050.04412.68
5.3.140.0060.03912.66
5.3.130.0080.03912.66
5.3.120.0060.04612.66
5.3.110.0080.03712.66
5.3.100.0060.03712.12
5.3.90.0060.03612.11
5.3.80.0070.03512.09
5.3.70.0070.03512.09
5.3.60.0050.03712.08
5.3.50.0030.03912.02
5.3.40.0080.03512.02
5.3.30.0040.03911.98
5.3.20.0050.04811.77
5.3.10.0090.03311.74
5.3.00.0080.04011.72
5.2.170.0020.0339.22
5.2.160.0050.0289.21
5.2.150.0000.0359.22
5.2.140.0040.0319.21
5.2.130.0040.0329.18
5.2.120.0060.0279.18
5.2.110.0040.0329.18
5.2.100.0040.0289.18
5.2.90.0050.0289.19
5.2.80.0030.0319.18
5.2.70.0040.0329.18
5.2.60.0050.0309.13
5.2.50.0060.0279.09
5.2.40.0040.0299.07
5.2.30.0060.0289.05
5.2.20.0040.0289.04
5.2.10.0060.0278.95
5.2.00.0030.0318.81
5.1.60.0060.0228.08
5.1.50.0070.0228.09
5.1.40.0020.0268.07
5.1.30.0040.0288.43
5.1.20.0070.0238.44
5.1.10.0050.0258.16
5.1.00.0030.0268.16
5.0.50.0010.0226.64
5.0.40.0020.0206.50
5.0.30.0010.0336.31
5.0.20.0030.0196.29
5.0.10.0020.0216.26
5.0.00.0020.0316.25
4.4.90.0040.0144.77
4.4.80.0030.0154.75
4.4.70.0050.0134.75
4.4.60.0030.0154.75
4.4.50.0020.0174.77
4.4.40.0030.0254.71
4.4.30.0020.0164.76
4.4.20.0040.0144.85
4.4.10.0030.0154.85
4.4.00.0030.0254.76
4.3.110.0030.0154.67
4.3.100.0040.0134.66
4.3.90.0020.0164.63
4.3.80.0050.0214.58
4.3.70.0010.0164.63
4.3.60.0050.0124.63
4.3.50.0020.0164.62
4.3.40.0050.0224.54
4.3.30.0010.0173.30
4.3.20.0040.0183.28
4.3.10.0020.0163.24
4.3.00.0000.0236.99

preferences:
44.89 ms | 401 KiB | 5 Q