3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ "one" => "one", "two" => "two", "group1" => [ "three" => "three", "four" => "four", "group2" => [ "five" => "five", ], ], "group3" => [ "six" => "six", ] ]; function mergeRecursive(array $array, $result = []) { foreach($array as $k => $v) { if(!is_array($v)) yield $v; else return "$k," . mergeRecursive($v, $result); } } foreach(mergeRecursive($arr) as $v) echo $v . "\n";

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)
8.3.60.0100.00716.75
8.3.50.0000.01418.00
8.3.40.0030.01418.88
8.3.30.0120.00318.67
8.3.20.0040.00420.34
8.3.10.0090.00023.68
8.3.00.0030.00617.76
8.2.180.0090.00616.50
8.2.170.0110.00422.96
8.2.160.0110.00420.25
8.2.150.0040.01125.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0060.00317.75
8.2.110.0090.00021.03
8.2.100.0040.00717.84
8.2.90.0000.00819.27
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0000.00817.93
8.2.50.0050.00318.10
8.2.40.0050.00220.18
8.2.30.0030.00520.63
8.2.20.0030.00617.73
8.2.10.0080.00018.19
8.2.00.0040.00418.05
8.1.280.0060.01625.92
8.1.270.0120.00923.87
8.1.260.0050.00326.35
8.1.250.0050.00328.09
8.1.240.0080.01523.77
8.1.230.0060.00722.78
8.1.220.0080.00017.76
8.1.210.0000.00918.77
8.1.200.0060.00317.24
8.1.190.0000.00917.23
8.1.180.0040.00418.10
8.1.170.0030.00618.38
8.1.160.0070.00022.01
8.1.150.0000.00718.82
8.1.140.0030.00619.64
8.1.130.0000.00717.71
8.1.120.0040.00417.37
8.1.110.0050.00317.43
8.1.100.0030.00517.43
8.1.90.0000.00717.56
8.1.80.0020.00517.45
8.1.70.0000.00717.43
8.1.60.0070.00017.64
8.1.50.0000.00817.57
8.1.40.0060.00317.52
8.1.30.0030.00517.58
8.1.20.0000.00717.53
8.1.10.0040.00417.58
8.1.00.0040.00417.52
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0000.00818.47
8.0.270.0040.00417.26
8.0.260.0060.00017.38
8.0.250.0050.00317.00
8.0.240.0030.00317.07
8.0.230.0080.00017.09
8.0.220.0000.00716.96
8.0.210.0080.00016.96
8.0.200.0060.00017.01
8.0.190.0000.00717.03
8.0.180.0030.00516.92
8.0.170.0000.00817.01
8.0.160.0000.00716.82
8.0.150.0000.00716.86
8.0.140.0040.00416.82
8.0.130.0090.00013.39
8.0.120.0040.00416.82
8.0.110.0040.00416.98
8.0.100.0050.00216.86
8.0.90.0050.00317.03
8.0.80.0040.01116.96
8.0.70.0040.00417.03
8.0.60.0000.00716.97
8.0.50.0000.00716.80
8.0.30.0060.01317.28
8.0.20.0110.00817.41
8.0.10.0050.00317.05
8.0.00.0110.00716.71
7.4.330.0030.00315.08
7.4.320.0000.00716.63
7.4.300.0000.00716.50
7.4.290.0040.00416.61
7.4.280.0030.00516.64
7.4.270.0070.00016.50
7.4.260.0080.00016.47
7.4.250.0000.00716.58
7.4.240.0060.00216.56
7.4.230.0000.00716.63
7.4.220.0120.00916.54
7.4.210.0000.01416.57
7.4.200.0000.00716.64
7.4.160.0050.01016.48
7.4.150.0080.00917.40
7.4.140.0160.00517.86
7.4.130.0120.00616.53
7.4.120.0120.00716.53
7.4.110.0100.00716.33
7.4.100.0030.01316.48
7.4.90.0070.01016.45
7.4.80.0060.01219.39
7.4.70.0120.00616.64
7.4.60.0090.00916.56
7.4.50.0030.00316.35
7.4.40.0090.00616.39
7.4.30.0060.01216.69
7.4.00.0100.00314.72
7.3.330.0040.00413.38
7.3.320.0050.00013.25
7.3.310.0000.00716.33
7.3.300.0000.00716.39
7.3.290.0080.00916.39
7.3.280.0040.01516.39
7.3.270.0030.01417.40
7.3.260.0120.01016.52
7.3.250.0080.00916.43
7.3.240.0090.01116.49
7.3.230.0090.00916.43
7.3.210.0040.01716.41
7.3.200.0170.00716.51
7.3.190.0070.01016.56
7.3.180.0130.01016.39
7.3.170.0130.00716.59
7.3.160.0030.01216.41
7.2.330.0030.01716.41
7.2.320.0130.00616.46
7.2.310.0160.00616.45
7.2.300.0140.00316.48
7.2.290.0100.00716.73
7.2.60.0100.01016.43
7.2.00.0090.00319.48
7.1.200.0070.00715.57
7.1.100.0030.01018.27
7.1.70.0120.00317.25
7.1.60.0080.01119.11
7.1.50.0200.01734.96
7.1.00.0030.07722.30
7.0.200.0850.00414.84
7.0.60.0170.06320.09
7.0.50.0100.03318.00
7.0.40.0100.05020.35
7.0.30.0200.06020.14
7.0.20.0200.03720.23
7.0.10.0330.07320.08
7.0.00.0100.04720.30
5.6.280.0070.04020.93
5.6.210.0100.08720.46
5.6.200.0130.07318.18
5.6.190.0100.05320.39
5.6.180.4070.04020.53
5.6.170.0330.07320.59
5.6.160.0130.08020.53
5.6.150.0070.03718.14
5.6.140.0030.08318.14
5.6.130.0100.07318.28
5.6.120.0000.04321.09
5.6.110.0070.09021.04
5.6.100.0070.06320.98
5.6.90.0000.07721.11
5.6.80.0100.08020.40
5.6.70.0000.08020.48
5.5.350.0230.05020.39
5.5.340.0130.03717.96
5.5.330.0070.06720.18
5.5.320.0230.05020.13
5.5.310.0170.04320.31
5.5.300.0100.05717.95
5.5.290.0100.06318.07
5.5.280.0100.08320.89
5.5.270.0030.09020.88
5.5.260.0030.04320.77
5.5.250.0070.03720.59
5.5.240.0030.03720.38
5.4.450.0800.06019.64
5.4.440.0670.07019.46
5.4.430.0870.06319.13
5.4.420.0830.05319.36
5.4.410.0600.05719.42
5.4.400.0700.06319.30
5.4.390.0730.06019.06
5.4.380.0770.05319.26
5.4.370.0800.06719.31
5.4.360.0900.05719.26
5.4.350.0670.04718.87
5.4.340.0670.05718.98
5.4.320.0630.05319.11
5.4.310.0870.04719.26
5.4.300.0800.05719.14
5.4.290.0870.05019.14
5.4.280.0830.06018.87
5.4.270.0900.05319.27
5.4.260.1230.05719.28
5.4.250.0770.05719.30
5.4.240.1030.05019.25
5.4.230.0700.06019.24
5.4.220.0700.05019.05
5.4.210.0900.04719.28
5.4.200.0800.05019.05
5.4.190.0830.05319.00
5.4.180.0770.06018.96
5.4.170.0800.05018.83
5.4.160.0600.05718.96
5.4.150.0870.05018.96
5.4.140.0900.04316.51
5.4.130.0800.04716.49
5.4.120.0730.06016.30
5.4.110.0830.05716.28
5.4.100.0670.05016.19
5.4.90.0800.05316.60
5.4.80.0800.04716.27
5.4.70.1000.05316.59
5.4.60.0830.05716.50
5.4.50.0870.05316.59
5.4.40.0630.05316.17
5.4.30.0730.05716.44
5.4.20.0800.04716.59
5.4.10.0870.06316.58
5.4.00.0730.05715.84

preferences:
46.32 ms | 400 KiB | 5 Q