3v4l.org

run code in 300+ PHP versions simultaneously
<?php function &permuteUnique($items) { sort($items); $size = count($items); $return = array(); while (true) { $return[] = $items; $invAt = $size - 2; for (;;$invAt--) { if ($invAt < 0) { break 2; } if ($items[$invAt] < $items[$invAt + 1]) { break; } } $swap1Num = $items[$invAt]; $inv2At = $size - 1; while ($swap1Num >= $items[$inv2At]) { $inv2At--; } $items[$invAt] = $items[$inv2At]; $items[$inv2At] = $swap1Num; $reverse1 = $invAt + 1; $reverse2 = $size - 1; while ($reverse1 < $reverse2) { $temp = $items[$reverse1]; $items[$reverse1] = $items[$reverse2]; $items[$reverse2] = $temp; $reverse1++; $reverse2--; } } return $return; } permuteUnique(array(1,2,3,4,5)) ?>

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)
8.3.60.0160.00318.54
8.3.50.0100.00821.98
8.3.40.0000.01418.82
8.3.30.0110.00418.82
8.3.20.0080.00020.07
8.3.10.0040.00422.01
8.3.00.0040.00422.54
8.2.180.0120.00316.36
8.2.170.0080.00822.96
8.2.160.0090.00620.85
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00419.36
8.2.110.0060.00322.25
8.2.100.0080.00417.84
8.2.90.0040.00418.96
8.2.80.0040.00417.97
8.2.70.0070.00317.62
8.2.60.0030.00518.04
8.2.50.0060.00618.07
8.2.40.0050.00318.16
8.2.30.0030.00518.05
8.2.20.0040.00417.76
8.2.10.0040.00417.83
8.2.00.0000.00817.95
8.1.280.0100.01025.92
8.1.270.0030.00623.92
8.1.260.0040.00426.35
8.1.250.0030.01028.09
8.1.240.0030.00623.87
8.1.230.0030.00919.16
8.1.220.0070.00017.77
8.1.210.0040.00418.77
8.1.200.0000.01017.50
8.1.190.0000.00817.43
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0050.00522.17
8.1.150.0000.00718.52
8.1.140.0000.00717.48
8.1.130.0030.00317.76
8.1.120.0000.00717.48
8.1.110.0070.00017.46
8.1.100.0020.00517.41
8.1.90.0000.00817.49
8.1.80.0000.00817.38
8.1.70.0040.00417.46
8.1.60.0000.00817.62
8.1.50.0000.00717.56
8.1.40.0040.00817.60
8.1.30.0000.00817.69
8.1.20.0000.00817.71
8.1.10.0040.00417.62
8.1.00.0030.00617.50
8.0.300.0000.00818.77
8.0.290.0040.00417.04
8.0.280.0000.00718.36
8.0.270.0030.00317.27
8.0.260.0000.00616.84
8.0.250.0040.00316.91
8.0.240.0040.00416.81
8.0.230.0070.00016.99
8.0.220.0030.00316.93
8.0.210.0040.00416.80
8.0.200.0000.00816.85
8.0.190.0030.00616.89
8.0.180.0100.00016.82
8.0.170.0000.00817.00
8.0.160.0000.00816.99
8.0.150.0070.00017.01
8.0.140.0040.00416.98
8.0.130.0060.00013.37
8.0.120.0030.00516.93
8.0.110.0040.00416.90
8.0.100.0000.00716.86
8.0.90.0040.00416.93
8.0.80.0090.01216.95
8.0.70.0030.00617.05
8.0.60.0000.00816.89
8.0.50.0050.00317.02
8.0.30.0120.01017.04
8.0.20.0090.00917.40
8.0.10.0040.00416.90
8.0.00.0080.00816.79
7.4.330.0050.00015.15
7.4.320.0000.00616.61
7.4.300.0030.00316.61
7.4.290.0070.00016.52
7.4.280.0000.00816.57
7.4.270.0070.00016.47
7.4.260.0000.00716.58
7.4.250.0040.00416.64
7.4.240.0040.00416.54
7.4.230.0000.00716.40
7.4.220.0140.01116.47
7.4.210.0030.01316.61
7.4.200.0000.00716.60
7.4.190.0040.00416.62
7.4.160.0110.00516.63
7.4.150.0180.00617.40
7.4.140.0070.01017.86
7.4.130.0080.01016.64
7.4.120.0010.01616.49
7.4.110.0060.01216.47
7.4.100.0140.00416.54
7.4.90.0100.01016.58
7.4.80.0040.01419.39
7.4.70.0100.01016.59
7.4.60.0160.00016.64
7.4.50.0020.00216.59
7.4.40.0060.00922.77
7.4.30.0060.00916.63
7.4.00.0080.00614.99
7.3.330.0000.00513.40
7.3.320.0000.00513.40
7.3.310.0050.00216.26
7.3.300.0050.00216.46
7.3.290.0060.00816.42
7.3.280.0070.00916.36
7.3.270.0160.00817.40
7.3.260.0180.00516.61
7.3.250.0150.00316.45
7.3.240.0130.00316.61
7.3.230.0040.01216.57
7.3.210.0110.00816.44
7.3.200.0090.01219.39
7.3.190.0070.01016.36
7.3.180.0050.01116.69
7.3.170.0030.01216.60
7.3.160.0100.00616.40
7.3.120.0080.00714.70
7.3.110.0130.00315.16
7.3.100.0000.01214.78
7.3.90.0090.00614.81
7.3.80.0090.00614.85
7.3.70.0030.01014.88
7.3.60.0030.00614.98
7.3.50.0030.01015.04
7.3.40.0030.00814.83
7.3.30.0040.01114.90
7.3.20.0070.01016.64
7.3.10.0080.00416.77
7.3.00.0030.00616.78
7.2.330.0090.00916.71
7.2.320.0090.01616.82
7.2.310.0060.01116.65
7.2.300.0060.01116.87
7.2.290.0100.00616.62
7.2.250.0080.01215.29
7.2.240.0060.01315.19
7.2.230.0030.00915.26
7.2.220.0060.01015.29
7.2.210.0130.00314.93
7.2.200.0060.00615.17
7.2.190.0080.00614.98
7.2.180.0030.01214.82
7.2.170.0030.01014.98
7.2.00.0060.00919.39
7.1.330.0030.01215.79
7.1.320.0000.01715.86
7.1.310.0070.00315.80
7.1.300.0070.00715.67
7.1.290.0060.00915.69
7.1.280.0040.00815.70
7.1.270.0040.01115.64
7.1.260.0070.00715.78
7.1.100.0000.01017.97
7.1.70.0030.00717.21
7.1.60.0040.01819.82
7.1.50.0040.00716.66
7.1.00.0130.06322.46
7.0.200.0090.00314.57
7.0.140.0030.07321.95
7.0.60.0030.08019.93
7.0.50.0100.07717.89
7.0.40.0070.08720.30
7.0.30.0100.04720.08
7.0.20.0300.06320.08
7.0.10.0100.06020.34
7.0.00.0100.06020.23
5.6.280.0000.07721.07
5.6.210.0030.06320.57
5.6.200.0000.05018.15
5.6.190.0130.06720.52
5.6.180.3570.04320.58
5.6.170.0370.05020.55
5.6.160.0100.04320.50
5.6.150.0130.07318.14
5.6.140.0000.05018.22
5.6.130.0100.05018.13
5.6.120.0100.08021.04
5.6.110.0130.08020.97
5.6.100.0070.08321.02
5.6.90.0130.07721.03
5.6.80.0170.07020.32
5.6.70.4500.03320.39
5.5.350.0200.07320.43
5.5.340.0100.07718.05
5.5.330.0030.04320.31
5.5.320.3700.04320.25
5.5.310.0300.07720.23
5.5.300.0100.07718.00
5.5.290.0070.05017.98
5.5.280.0100.06720.71
5.5.270.0030.08320.71
5.5.260.0100.08020.89
5.5.250.0030.06320.64
5.5.240.0270.07320.29
5.4.450.0430.04719.28
5.4.440.0370.04719.49
5.4.430.0330.04019.41
5.4.420.0530.03719.18
5.4.410.0230.06019.03
5.4.400.0070.06018.61
5.4.390.0030.06018.65
5.4.380.0100.05718.64
5.4.370.0200.04718.82
5.4.360.0270.04018.76
5.4.350.0230.05018.83
5.4.340.0100.05718.55
5.4.320.0020.04812.59
5.4.310.0090.03912.59
5.4.300.0080.03912.59
5.4.290.0060.04512.59
5.4.280.0080.03512.45
5.4.270.0050.04212.45
5.4.260.0040.04112.46
5.4.250.0050.04412.45
5.4.240.0090.04412.45
5.4.230.0060.04412.45
5.4.220.0080.03512.45
5.4.210.0030.03912.45
5.4.200.0040.04012.45
5.4.190.0060.04212.44
5.4.180.0060.05112.45
5.4.170.0070.04512.45
5.4.160.0070.03712.45
5.4.150.0040.04512.44
5.4.140.0080.03812.13
5.4.130.0080.03512.12
5.4.120.0120.03012.08
5.4.110.0060.03612.07
5.4.100.0060.03612.07
5.4.90.0040.04212.07
5.4.80.0050.04312.07
5.4.70.0080.03612.07
5.4.60.0040.04812.06
5.4.50.0040.04012.07
5.4.40.0070.03512.05
5.4.30.0100.03112.05
5.4.20.0070.04412.05
5.4.10.0070.03912.05
5.4.00.0060.03911.54
5.3.290.0030.04512.83
5.3.280.0120.04312.74
5.3.270.0060.04512.74
5.3.260.0100.05312.75
5.3.250.0100.05112.75
5.3.240.0110.05012.75
5.3.230.0070.05312.74
5.3.220.0090.05112.71
5.3.210.0100.03912.71
5.3.200.0060.04112.71
5.3.190.0090.04312.71
5.3.180.0070.03912.70
5.3.170.0070.03712.70
5.3.160.0080.03512.71
5.3.150.0110.03212.70
5.3.140.0060.03712.69
5.3.130.0060.03912.69
5.3.120.0100.03612.69
5.3.110.0070.04012.69
5.3.100.0090.03812.18
5.3.90.0090.03512.16
5.3.80.0070.03612.14
5.3.70.0030.03912.15
5.3.60.0090.04112.13
5.3.50.0080.03912.08
5.3.40.0080.03712.07
5.3.30.0080.03412.04
5.3.20.0080.03611.82
5.3.10.0060.04911.78
5.3.00.0070.03811.78
5.2.170.0030.0349.27
5.2.160.0070.0329.27
5.2.150.0060.0359.27
5.2.140.0050.0319.27
5.2.130.0070.0299.23
5.2.120.0050.0339.23
5.2.110.0040.0309.23
5.2.100.0060.0279.23
5.2.90.0030.0319.23
5.2.80.0040.0319.23
5.2.70.0060.0319.22
5.2.60.0080.0319.18
5.2.50.0050.0299.15
5.2.40.0030.0309.12
5.2.30.0020.0339.11
5.2.20.0020.0319.09
5.2.10.0020.0359.00
5.2.00.0040.0308.87
5.1.60.0050.0258.17
5.1.50.0050.0348.17
5.1.40.0010.0308.15
5.1.30.0070.0318.50
5.1.20.0050.0308.52
5.1.10.0050.0268.25
5.1.00.0080.0228.25
5.0.50.0060.0256.73
5.0.40.0030.0216.59
5.0.30.0060.0296.40
5.0.20.0020.0216.38
5.0.10.0040.0206.35
5.0.00.0050.0296.34
4.4.90.0040.0144.78
4.4.80.0010.0174.76
4.4.70.0030.0164.75
4.4.60.0010.0174.75
4.4.50.0030.0164.77
4.4.40.0050.0234.74
4.4.30.0020.0174.76
4.4.20.0010.0184.85
4.4.10.0030.0194.85
4.4.00.0020.0264.77
4.3.110.0040.0144.67
4.3.100.0050.0164.67
4.3.90.0040.0194.65
4.3.80.0030.0294.65
4.3.70.0010.0174.64
4.3.60.0020.0154.64
4.3.50.0050.0144.64
4.3.40.0020.0254.59
4.3.30.0020.0183.40
4.3.20.0030.0153.39
4.3.10.0030.0153.34
4.3.00.0030.01715.11

preferences:
52.1 ms | 401 KiB | 5 Q