3v4l.org

run code in 300+ PHP versions simultaneously
<?php function createCombinations($input_str, $length) { $input = str_split($input_str); foreach($input as $c) { if($length == 1) { yield $c; return; } else { foreach(createCombinations($input_str, $length -1) as $s) { yield $c + $s; return; } } } } $texte = "abcdefghijklmnopqrstuvwxyz0123456789"; foreach(createCombinations($texte, 4) as $result) { echo $result; }

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)
8.3.60.0110.00618.43
8.3.50.0120.00918.16
8.3.40.0180.00318.84
8.3.30.0070.00719.14
8.3.20.0050.00220.21
8.3.10.0030.00520.78
8.3.00.0030.00619.25
8.2.180.0110.00316.50
8.2.170.0090.00622.96
8.2.160.0100.01020.52
8.2.150.0090.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00022.06
8.2.110.0030.00620.89
8.2.100.0030.00917.91
8.2.90.0030.00618.16
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0050.00317.93
8.2.50.0050.00818.07
8.2.40.0080.00318.16
8.2.30.0000.00719.17
8.2.20.0040.00417.80
8.2.10.0000.00718.07
8.2.00.0060.00317.75
8.1.280.0030.01025.92
8.1.270.0030.00623.84
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00919.23
8.1.230.0040.00720.97
8.1.220.0040.00417.74
8.1.210.0080.00018.93
8.1.200.0030.00617.35
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0070.00418.52
8.1.160.0050.00222.01
8.1.150.0000.00818.84
8.1.140.0040.00417.40
8.1.130.0000.00717.77
8.1.120.0070.00017.47
8.1.110.0040.00417.48
8.1.100.0000.00817.46
8.1.90.0000.00717.49
8.1.80.0030.00317.45
8.1.70.0040.00417.47
8.1.60.0040.00417.60
8.1.50.0030.00617.49
8.1.40.0000.00817.51
8.1.30.0040.00417.61
8.1.20.0000.00817.62
8.1.10.0000.00717.61
8.1.00.0000.00717.40
8.0.300.0030.00320.12
8.0.290.0060.00316.63
8.0.280.0000.00818.43
8.0.270.0000.00717.18
8.0.260.0050.00317.32
8.0.250.0060.00016.94
8.0.240.0000.00716.93
8.0.230.0050.00216.99
8.0.220.0030.00316.87
8.0.210.0000.00616.87
8.0.200.0000.00717.01
8.0.190.0000.00817.03
8.0.180.0040.00417.01
8.0.170.0000.00816.94
8.0.160.0070.00016.89
8.0.150.0040.00416.99
8.0.140.0000.00716.98
8.0.130.0030.00313.36
8.0.120.0080.00016.96
8.0.110.0030.00716.88
8.0.100.0040.00416.98
8.0.90.0000.00716.93
8.0.80.0030.01316.94
8.0.70.0000.00717.00
8.0.60.0000.00816.92
8.0.50.0030.00516.92
8.0.30.0090.01017.33
8.0.20.0080.01117.40
8.0.10.0040.00417.13
8.0.00.0050.01316.68
7.4.330.0030.00315.00
7.4.320.0030.00316.45
7.4.300.0060.00016.60
7.4.290.0000.00716.43
7.4.280.0000.00716.51
7.4.270.0000.00816.48
7.4.260.0030.00316.38
7.4.250.0000.00716.45
7.4.240.0040.00316.63
7.4.230.0050.00216.55
7.4.220.0150.01216.63
7.4.210.0060.00916.46
7.4.200.0040.00416.70
7.4.160.0060.00916.64
7.4.150.0150.00617.40
7.4.140.0060.01117.86
7.4.130.0100.00716.65
7.4.120.0070.01016.52
7.4.110.0060.01016.48
7.4.100.0060.01016.34
7.4.90.0070.01116.53
7.4.80.0140.00318.63
7.4.70.0100.00616.56
7.4.60.0120.00916.70
7.4.50.0040.00416.49
7.4.40.0090.00916.39
7.4.30.0060.01016.62
7.4.00.0030.01014.95
7.3.330.0000.00513.36
7.3.320.0050.00013.25
7.3.310.0000.00716.40
7.3.300.0040.00416.32
7.3.290.0120.00316.50
7.3.280.0090.00916.38
7.3.270.0130.01317.40
7.3.260.0070.01016.36
7.3.250.0090.01016.47
7.3.240.0100.01316.58
7.3.230.0060.01216.64
7.3.210.0040.01416.45
7.3.200.0080.01119.39
7.3.190.0100.00716.43
7.3.180.0120.00616.34
7.3.170.0060.01116.58
7.3.160.0150.00816.51
7.3.120.0090.00914.96
7.3.110.0060.00614.97
7.3.100.0030.01014.74
7.3.90.0060.00314.87
7.3.80.0100.00714.86
7.3.70.0030.00614.88
7.3.60.0030.01314.95
7.3.50.0030.01015.05
7.3.40.0070.00714.89
7.3.30.0100.00014.85
7.3.20.0070.00716.73
7.3.10.0030.00916.82
7.3.00.0080.00816.60
7.2.330.0140.00316.69
7.2.320.0070.01016.43
7.2.310.0060.01616.58
7.2.300.0050.01216.52
7.2.290.0140.00316.81
7.2.250.0070.01015.27
7.2.240.0070.01115.08
7.2.230.0040.00814.99
7.2.220.0040.01415.29
7.2.210.0030.01215.27
7.2.200.0030.01014.89
7.2.190.0030.00715.01
7.2.180.0030.00915.07
7.2.170.0070.00715.05
7.2.130.0100.00717.00
7.2.120.0100.00317.04
7.2.110.0000.01317.07
7.2.100.0040.00716.98
7.2.90.0040.01716.44
7.2.80.0070.00716.84
7.2.70.0030.01017.03
7.2.60.0070.00516.94
7.2.50.0050.00516.71
7.2.40.0090.00616.40
7.2.30.0110.00016.86
7.2.20.0110.00316.87
7.2.10.0000.00916.57
7.2.00.0040.00718.12
7.1.330.0060.00615.64
7.1.320.0000.01315.79
7.1.310.0130.00316.08
7.1.300.0030.00715.56
7.1.290.0030.00715.78
7.1.280.0100.00615.88
7.1.270.0060.00715.43
7.1.260.0030.00715.96
7.1.250.0030.01015.88
7.1.200.0000.01615.84
7.1.100.0000.01118.26
7.1.70.0090.00617.07
7.1.60.0100.00719.32
7.1.50.0000.01116.95
7.1.00.0100.07022.32
7.0.200.0000.00916.63
7.0.140.0070.07322.00
7.0.60.0000.08020.02
7.0.50.0130.07317.89
7.0.40.0100.08020.21
7.0.30.0600.07020.16
7.0.20.0270.04020.30
7.0.10.0130.04020.06
7.0.00.0070.05720.32
5.6.280.0030.07321.09
5.6.210.0100.07020.68
5.6.200.0070.03718.21
5.6.190.0130.07320.47
5.6.180.0500.04020.41
5.6.170.0200.03720.62
5.6.160.0100.04720.46
5.6.150.0100.08018.27
5.6.140.0100.03718.17
5.6.130.0070.07718.21
5.6.120.0000.04720.82
5.6.110.0030.07320.98
5.6.100.0070.04021.01
5.6.90.0100.06020.99
5.6.80.0070.04320.49
5.5.350.0230.06720.38
5.5.340.0000.06018.05
5.5.330.0070.03720.13
5.5.320.0400.06020.20
5.5.310.0170.08720.26
5.5.300.0070.03718.03
5.5.290.0030.04318.06
5.5.280.0200.06020.88
5.5.270.0030.05720.72
5.5.260.0000.04720.87
5.5.250.0030.06020.71
5.5.240.0200.07720.26
5.4.450.0200.06019.34
5.4.440.0970.04719.45
5.4.430.0900.05319.55
5.4.420.0770.05719.48
5.4.410.0830.05719.45
5.4.400.1130.07019.27
5.4.390.0730.05319.28
5.4.380.0400.04318.80
5.4.370.0500.06718.53
5.4.360.0500.04018.77
5.4.350.0230.05718.78
5.4.340.0430.05718.63
5.4.320.0030.03812.52
5.4.310.0020.04112.51
5.4.300.0050.03612.52
5.4.290.0080.03512.51
5.4.280.0040.03712.41
5.4.270.0030.03812.41
5.4.260.0040.03912.41
5.4.250.0080.03412.41
5.4.240.0030.03812.41
5.4.230.0080.03912.40
5.4.220.0050.03612.40
5.4.210.0040.03612.40
5.4.200.0040.03812.40
5.4.190.0040.03712.39
5.4.180.0050.03512.39
5.4.170.0040.03712.41
5.4.160.0020.03912.40
5.4.150.0030.03712.39
5.4.140.0060.03612.09
5.4.130.0050.03512.07
5.4.120.0070.03612.04
5.4.110.0050.03512.03
5.4.100.0060.03412.03
5.4.90.0030.03912.03
5.4.80.0040.03712.04
5.4.70.0020.03712.02
5.4.60.0040.03412.03
5.4.50.0070.03312.03
5.4.40.0050.03412.02
5.4.30.0070.03312.01
5.4.20.0020.03712.01
5.4.10.0020.03712.01
5.4.00.0030.03811.50
5.3.290.0060.03812.80
5.3.280.0040.03812.71
5.3.270.0040.04112.72
5.3.260.0070.03712.72
5.3.250.0060.03612.72
5.3.240.0010.04112.72
5.3.230.0040.03912.71
5.3.220.0040.03712.68
5.3.210.0040.03912.68
5.3.200.0030.03812.68
5.3.190.0070.03512.68
5.3.180.0050.03712.67
5.3.170.0060.03612.67
5.3.160.0050.03712.67
5.3.150.0060.04812.68
5.3.140.0070.03412.66
5.3.130.0020.04212.66
5.3.120.0020.04312.66
5.3.110.0030.04012.65
5.3.100.0090.03312.13
5.3.90.0030.03812.11
5.3.80.0060.03512.10
5.3.70.0080.03912.09
5.3.60.0040.03612.08
5.3.50.0030.03812.02
5.3.40.0070.03512.02
5.3.30.0060.03511.98
5.3.20.0040.03711.76
5.3.10.0050.03511.73
5.3.00.0100.03111.72
5.2.170.0090.0259.22
5.2.160.0030.0389.22
5.2.150.0020.0339.22
5.2.140.0060.0299.22
5.2.130.0020.0309.18
5.2.120.0040.0289.18
5.2.110.0030.0299.18
5.2.100.0050.0279.18
5.2.90.0020.0359.18
5.2.80.0070.0319.18
5.2.70.0050.0299.18
5.2.60.0030.0329.13
5.2.50.0030.0319.10
5.2.40.0020.0319.07
5.2.30.0040.0299.05
5.2.20.0020.0319.04
5.2.10.0040.0278.95
5.2.00.0030.0308.80
5.1.60.0040.0238.09
5.1.50.0060.0228.09
5.1.40.0050.0248.06
5.1.30.0030.0298.43
5.1.20.0040.0308.44
5.1.10.0040.0258.17
5.1.00.0040.0288.17
5.0.50.0030.0206.64
5.0.40.0050.0186.51
5.0.30.0080.0346.32
5.0.20.0040.0266.29
5.0.10.0020.0226.26
5.0.00.0030.0306.25
4.4.90.0040.0144.78
4.4.80.0020.0184.75
4.4.70.0020.0164.75
4.4.60.0030.0154.75
4.4.50.0010.0174.77
4.4.40.0030.0244.71
4.4.30.0030.0154.76
4.4.20.0020.0164.85
4.4.10.0030.0154.85
4.4.00.0020.0254.76
4.3.110.0020.0234.66
4.3.100.0010.0234.66
4.3.90.0020.0154.64
4.3.80.0030.0254.59
4.3.70.0060.0174.63
4.3.60.0060.0174.63
4.3.50.0030.0234.62
4.3.40.0040.0314.54
4.3.30.0030.0153.30
4.3.20.0030.0193.28
4.3.10.0020.0213.25
4.3.00.0000.0236.92

preferences:
59.46 ms | 400 KiB | 5 Q