3v4l.org

run code in 300+ PHP versions simultaneously
<?php $payload = ['a', 'b', 'c', 'd']; function permutations($payload) { if (empty($payload)) { return [[]]; } $results = []; foreach ($payload as $key => $value) { foreach (permutations(array_diff_key($payload, [$key => $value])) as $subarray) { $results[] = array_merge([$value], $subarray); } } return $results; } $permutations = array_map('implode', permutations($payload)); print_r($permutations);

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)
8.5.00.0130.01020.02
8.4.150.0030.00014.05
8.4.140.0150.00519.41
8.4.130.0110.00617.74
8.4.120.0090.00022.49
8.4.110.0120.00818.88
8.4.100.0100.01117.47
8.4.90.0110.00820.63
8.4.80.0130.00718.69
8.4.70.0050.00418.75
8.4.60.0130.00720.39
8.4.50.0140.00620.29
8.4.40.0130.00617.73
8.4.30.0120.00620.68
8.4.20.0160.00317.74
8.4.10.0060.01323.66
8.3.280.0030.00014.05
8.3.270.0070.01316.58
8.3.260.0070.01116.80
8.3.250.0040.00619.11
8.3.240.0130.00716.61
8.3.230.0090.00016.72
8.3.220.0070.00118.98
8.3.210.0110.01116.54
8.3.200.0050.00416.44
8.3.190.0090.00916.74
8.3.180.0100.01018.18
8.3.170.0090.01017.42
8.3.160.0120.00618.41
8.3.150.0120.00616.50
8.3.140.0150.00316.38
8.3.130.0090.00018.54
8.3.120.0080.00819.08
8.3.110.0050.00320.94
8.3.100.0100.00724.06
8.3.90.0130.00626.77
8.3.80.0040.00717.97
8.3.70.0110.01118.43
8.3.60.0090.00618.39
8.3.50.0040.01116.45
8.3.40.0100.00620.39
8.3.30.0100.00719.97
8.3.20.0000.00824.18
8.3.10.0000.00724.66
8.3.00.0050.00326.16
8.2.290.0110.00616.73
8.2.280.0060.00418.21
8.2.270.0000.01816.95
8.2.260.0030.00718.36
8.2.250.0080.00316.36
8.2.240.0030.00617.14
8.2.230.0100.00022.58
8.2.220.0050.00537.54
8.2.210.0100.00026.77
8.2.200.0030.00616.63
8.2.190.0120.00416.58
8.2.180.0140.00716.63
8.2.170.0070.00718.94
8.2.160.0100.00322.96
8.2.150.0050.00325.66
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0000.00822.08
8.2.110.0030.00621.12
8.2.100.0110.00019.26
8.2.90.0050.00319.33
8.2.80.0050.00320.54
8.2.70.0040.00419.47
8.2.60.0030.00619.36
8.2.50.0050.00519.25
8.2.40.0080.00019.35
8.2.30.0040.00419.48
8.2.20.0000.00819.47
8.2.10.0000.00819.48
8.2.00.0040.00419.38
8.1.330.0070.00216.14
8.1.320.0110.00920.20
8.1.310.0070.00718.34
8.1.300.0030.01318.32
8.1.290.0070.00330.84
8.1.280.0070.00725.92
8.1.270.0080.00024.66
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0030.00622.19
8.1.230.0040.00820.98
8.1.220.0000.00817.79
8.1.210.0000.00918.82
8.1.200.0040.00419.14
8.1.190.0030.00519.13
8.1.180.0060.00319.14
8.1.170.0030.00619.25
8.1.160.0060.00319.13
8.1.150.0000.00919.25
8.1.140.0060.00319.13
8.1.130.0030.00619.13
8.1.120.0060.00319.26
8.1.110.0080.00019.26
8.1.100.0040.00419.13
8.1.90.0070.00319.05
8.1.80.0030.00619.26
8.1.70.0070.00319.26
8.1.60.0080.00019.26
8.1.50.0040.00419.25
8.1.40.0060.00319.38
8.1.30.0080.00019.19
8.1.20.0040.00419.26
8.1.10.0090.00019.18
8.1.00.0000.00819.13
8.0.300.0020.00520.16
8.0.290.0000.00818.49
8.0.280.0040.00418.61
8.0.270.0000.00918.74
8.0.260.0030.00618.62
8.0.250.0060.00318.61
8.0.240.0030.00718.49
8.0.230.0000.00918.36
8.0.220.0070.00318.48
8.0.210.0060.00318.61
8.0.200.0070.00318.49
8.0.190.0030.00718.62
8.0.180.0060.00318.61
8.0.170.0030.00718.35
8.0.160.0060.00318.62
8.0.150.0050.00318.61
8.0.140.0090.00018.49
8.0.130.0080.00018.61
8.0.120.0080.00018.59
8.0.110.0030.00618.36
8.0.100.0040.00418.36
8.0.90.0080.00018.48
8.0.80.0040.00418.49
8.0.70.0090.00018.49
8.0.60.0060.00318.37
8.0.50.0040.00418.49
8.0.30.0090.00018.47
8.0.20.0090.00018.40
8.0.10.0050.00318.62

preferences:
36.28 ms | 403 KiB | 5 Q