3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'ABC1'; permute(str_split($str), 0, strlen($str)); function permute($arr, $i, $n) { if ($i == $n) { printArray($arr); return; } for ($j = $i; $j <= $n; $j += 1) { swapArrayValues($arr, $i, $j); permute($arr, $i + 1, $n); swapArrayValues($arr, $i, $j); } } function swapArrayValues(&$array, $i, $j) { $tmp = $array[$i]; $array[$i] = $array[$j]; $array[$j] = $tmp; } function printArray($arr) { echo implode($arr, ' ') . "\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)
8.3.70.0150.00418.55
8.3.60.0090.00918.43
8.3.50.0120.00722.08
8.3.40.0150.00018.91
8.3.30.0090.00919.23
8.3.20.0040.00420.16
8.3.10.0030.00623.71
8.3.00.0030.00619.51
8.2.180.0150.00616.63
8.2.170.0110.00322.96
8.2.160.0070.00720.32
8.2.150.0000.00824.18
8.2.140.0030.00624.66
8.2.130.0120.00426.16
8.2.120.0050.00222.16
8.2.110.0040.00422.24
8.2.100.0060.00617.68
8.2.90.0000.00819.22
8.2.80.0080.00017.97
8.2.70.0050.00317.63
8.2.60.0000.00818.03
8.2.50.0000.00918.07
8.2.40.0080.00018.19
8.2.30.0040.00418.08
8.2.20.0000.00717.64
8.2.10.0000.00717.84
8.2.00.0070.00017.63
8.1.280.0090.00925.92
8.1.270.0070.00723.88
8.1.260.0030.00626.35
8.1.250.0070.00028.09
8.1.240.0060.00323.87
8.1.230.0090.00319.17
8.1.220.0080.00017.74
8.1.210.0060.00318.77
8.1.200.0060.00317.36
8.1.190.0040.00417.52
8.1.180.0040.00418.10
8.1.170.0000.01018.57
8.1.160.0070.00321.97
8.1.150.0080.00018.53
8.1.140.0000.00817.41
8.1.130.0000.00817.72
8.1.120.0040.00417.38
8.1.110.0000.00717.49
8.1.100.0050.00217.43
8.1.90.0040.00317.49
8.1.80.0000.00817.39
8.1.70.0000.00717.37
8.1.60.0000.00817.57
8.1.50.0050.00317.45
8.1.40.0030.00617.39
8.1.30.0030.00517.50
8.1.20.0000.00717.68
8.1.10.0040.00417.50
8.1.00.0000.00817.43
8.0.300.0050.00218.77
8.0.290.0050.00317.05
8.0.280.0040.00418.34
8.0.270.0040.00417.21
8.0.260.0030.00316.76
8.0.250.0070.00016.89
8.0.240.0040.00416.87
8.0.230.0030.00317.00
8.0.220.0000.00716.90
8.0.210.0030.00416.92
8.0.200.0040.00417.03
8.0.190.0040.00316.95
8.0.180.0000.00716.93
8.0.170.0060.00316.84
8.0.160.0040.00416.91
8.0.150.0040.00416.75
8.0.140.0040.00416.91
8.0.130.0000.00813.30
8.0.120.0070.00016.80
8.0.110.0000.00716.89
8.0.100.0000.00716.77
8.0.90.0040.00416.80
8.0.80.0060.01016.96
8.0.70.0030.00516.89
8.0.60.0040.00416.86
8.0.50.0000.00716.93
8.0.30.0070.01116.88
8.0.20.0110.00717.40
8.0.10.0070.00016.96
8.0.00.0090.01116.88
7.4.330.0000.00515.00
7.4.320.0030.00316.54
7.4.300.0040.00416.53
7.4.290.0060.00316.52
7.4.280.0000.00916.59
7.4.270.0070.00016.45
7.4.260.0040.00416.49
7.4.250.0080.00016.54
7.4.240.0040.00416.54
7.4.230.0050.00216.55
7.4.220.0060.01316.58
7.4.210.0050.01316.57
7.4.200.0040.00416.49
7.4.190.0040.00416.51
7.4.160.0100.01416.73
7.4.150.0080.01217.40
7.4.140.0140.00617.86
7.4.130.0140.00716.54
7.4.120.0120.01016.58
7.4.110.0150.00316.57
7.4.100.0100.01016.43
7.4.90.0090.00916.74
7.4.80.0160.01019.39
7.4.70.0070.01116.48
7.4.60.0100.00716.54
7.4.50.0030.00616.67
7.4.40.0090.00922.77
7.4.30.0130.00516.51
7.4.00.0040.00815.04
7.3.330.0000.00513.46
7.3.320.0000.00713.43
7.3.310.0070.00016.45
7.3.300.0000.00716.48
7.3.290.0030.01016.40
7.3.280.0100.00916.44
7.3.270.0040.01417.40
7.3.260.0150.00316.40
7.3.250.0070.02016.56
7.3.240.0060.01216.40
7.3.230.0030.01616.45
7.3.210.0110.00716.45
7.3.200.0110.00719.39
7.3.190.0170.00616.55
7.3.180.0110.00916.48
7.3.170.0040.01416.41
7.3.160.0130.00316.54
7.3.120.0120.00314.91
7.2.330.0130.00716.87
7.2.320.0080.01216.80
7.2.310.0060.01816.63
7.2.300.0060.01116.57
7.2.290.0080.00916.79
7.2.60.0060.00616.75
7.2.00.0000.01319.57
7.1.200.0060.00815.93
7.1.100.0060.00618.23
7.1.70.0080.00017.22
7.1.60.0100.01319.31
7.1.50.0040.01817.10
7.1.00.0030.07322.51
7.0.200.0000.01016.79
7.0.140.0070.07022.09
7.0.100.0100.07021.99
7.0.90.0100.05721.73
7.0.80.0070.07721.70
7.0.70.0100.08021.70
7.0.60.0170.07021.87
7.0.50.0030.08022.12
7.0.40.0070.07319.91
7.0.30.0070.08020.01
7.0.20.0000.06720.11
7.0.10.0130.07020.12
7.0.00.0070.06320.18
5.6.280.0070.07321.13
5.6.250.0170.07020.60
5.6.240.0030.08320.60
5.6.230.0070.07720.54
5.6.220.0070.07020.59
5.6.210.0070.08020.65
5.6.200.0100.05020.99
5.6.190.0030.06321.12
5.6.180.0070.06321.02
5.6.170.0100.07321.04
5.6.160.0070.04321.07
5.6.150.0000.09021.12
5.6.140.0070.04720.96
5.6.130.0030.08321.05
5.6.120.0070.07721.11
5.6.110.0100.08321.05
5.6.100.0100.07721.13
5.6.90.0130.08320.98
5.6.80.0070.04020.47
5.6.70.0030.08320.42
5.6.60.0070.06020.41
5.6.50.0070.08320.44
5.6.40.0070.06720.42
5.6.30.0030.08720.30
5.6.20.0070.07020.38
5.6.10.0030.07720.41
5.6.00.0070.07020.36
5.5.380.0030.04720.42
5.5.370.0000.08320.45
5.5.360.0000.05720.54
5.5.350.0030.07020.38
5.5.340.0100.07720.81
5.5.330.0030.07720.93
5.5.320.0030.08720.93
5.5.310.0000.08320.88
5.5.300.0070.07020.91
5.5.290.0000.06320.80
5.5.280.0100.06720.65
5.5.270.0030.08320.86
5.5.260.0030.08020.92
5.5.250.0030.07020.73
5.5.240.0030.07720.23
5.5.230.0100.03320.18
5.5.220.0100.07020.26
5.5.210.0030.07320.27
5.5.200.0030.06720.23
5.5.190.0100.07020.15
5.5.180.0100.07320.23
5.5.160.0030.04320.25
5.5.150.0070.06320.24
5.5.140.0030.07020.14
5.5.130.0070.04320.27
5.5.120.0030.07320.13
5.5.110.0030.04020.09
5.5.100.0070.04020.14
5.5.90.0070.05020.10
5.5.80.0070.07320.17
5.5.70.0070.07319.98
5.5.60.0030.06720.13
5.5.50.0030.08320.10
5.5.40.0030.05320.12
5.5.30.0070.07019.94
5.5.20.0070.08020.09
5.5.10.0000.07320.02
5.5.00.0030.06320.11
5.4.450.0030.08319.43
5.4.440.0000.07019.49
5.4.430.0070.04719.37
5.4.420.0030.06719.55
5.4.410.0070.06719.22
5.4.400.0070.04019.13
5.4.390.0100.04019.14
5.4.380.0000.07719.04
5.4.370.0000.04718.95
5.4.360.0030.06319.18
5.4.350.0030.07319.16
5.4.340.0070.07719.16
5.4.320.0100.07319.20
5.4.310.0100.07019.04
5.4.300.0100.07019.14
5.4.290.0070.07718.92
5.4.280.0030.07319.12
5.4.270.0070.04019.04
5.4.260.0030.07319.16
5.4.250.0000.07718.89
5.4.240.0030.04319.22
5.4.230.0070.06019.09
5.4.220.0000.08019.10
5.4.210.0030.07718.86
5.4.200.0070.07719.20
5.4.190.0000.07019.20
5.4.180.0000.07018.86
5.4.170.0100.07019.09
5.4.160.0000.08319.19
5.4.150.0030.07718.83
5.4.140.0100.05716.31
5.4.130.0000.08016.38
5.4.120.0070.04016.49
5.4.110.0030.07016.56
5.4.100.0000.05316.56
5.4.90.0070.07016.45
5.4.80.0030.07716.47
5.4.70.0070.06316.47
5.4.60.0070.04016.36
5.4.50.0030.07316.47
5.4.40.0000.08016.45
5.4.30.0000.07316.33
5.4.20.0070.07016.36
5.4.10.0030.08016.46
5.4.00.0030.07315.87
5.3.290.0030.08014.73
5.3.280.0000.07314.63
5.3.270.0070.07314.63
5.3.260.0070.06314.54
5.3.250.0030.07314.55
5.3.240.0030.08014.73
5.3.230.0000.07314.54
5.3.220.0070.06014.61
5.3.210.0070.04714.53
5.3.200.0000.08014.52
5.3.190.0030.04314.59
5.3.180.0000.06314.55
5.3.170.0000.05014.64
5.3.160.0070.07314.58
5.3.150.0030.07314.54
5.3.140.0100.05714.50
5.3.130.0000.07714.61
5.3.120.0070.07314.51
5.3.110.0030.07314.52
5.3.100.0070.03314.03
5.3.90.0030.04314.09
5.3.80.0030.07014.05
5.3.70.0030.04314.08
5.3.60.0070.06714.02
5.3.50.0070.07313.99
5.3.40.0030.07013.99
5.3.30.0000.06313.84
5.3.20.0000.07713.84
5.3.10.0030.07713.74
5.3.00.0000.08013.63
5.2.170.0070.05711.83
5.2.160.0030.03711.83
5.2.150.0000.06311.83
5.2.140.0070.06311.83
5.2.130.0030.06011.83
5.2.120.0000.06311.83
5.2.110.0030.06311.83
5.2.100.0000.06311.83
5.2.90.0030.06011.83
5.2.80.0000.06711.83
5.2.70.0000.05311.83
5.2.60.0030.03311.83
5.2.50.0030.06311.83
5.2.40.0030.06311.83
5.2.30.0030.05311.83
5.2.20.0070.04711.83
5.2.10.0030.06011.83
5.2.00.0130.05311.83
5.1.60.0000.04311.83
5.1.50.0070.05011.83
5.1.40.0070.05011.83
5.1.30.0000.06311.83
5.1.20.0070.05311.83
5.1.10.0030.04711.83
5.1.00.0000.05311.83
5.0.50.0030.04711.83
5.0.40.0070.05011.83
5.0.30.0030.04011.83
5.0.20.0070.04311.83
5.0.10.0070.04011.83
5.0.00.0000.06311.83
4.4.90.0070.03011.83
4.4.80.0030.03311.83
4.4.70.0000.03711.83
4.4.60.0000.03311.83
4.4.50.0070.02311.83
4.4.40.0030.05011.83
4.4.30.0000.03011.83
4.4.20.0030.02711.83
4.4.10.0000.02011.83
4.4.00.0000.04711.83
4.3.110.0000.03311.83
4.3.100.0000.02711.83
4.3.90.0000.03711.83
4.3.80.0000.06311.83
4.3.70.0000.03011.83
4.3.60.0000.03011.83
4.3.50.0000.03011.83
4.3.40.0000.03011.83
4.3.30.0000.03311.83
4.3.20.0030.03311.83
4.3.10.0030.03011.83
4.3.00.0030.02311.83

preferences:
30.03 ms | 401 KiB | 5 Q