3v4l.org

run code in 300+ PHP versions simultaneously
<?php function powerSet($n, $minLength=2) { $in = range(1,$n); $count = count($in); $members = pow(2,$count); $return = array(); for ($i = 0; $i < $members; $i++) { $b = sprintf("%0".$count."b",$i); $out = array(); for ($j = 0; $j < $count; $j++) { if ($b{$j} == '1') $out[] = $in[$j]; } if (count($out) >= 2) { $return[] = $out; } } sort($return); return $return; } echo "\nFor n=2 \n"; foreach(powerSet(2) as $item) { echo implode(",",$item)."\n"; } echo "\nFor n=3 \n"; foreach(powerSet(3) as $item) { echo implode(",",$item)."\n"; } echo "\nFor n=4 \n"; foreach(powerSet(4) as $item) { echo implode(",",$item)."\n"; } echo "\nFor n=5 \n"; foreach(powerSet(5) as $item) { echo implode(",",$item)."\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)
8.4.140.0150.00817.71
8.4.130.0120.00918.13
8.4.120.0120.00720.66
8.4.110.0150.00422.75
8.4.100.0140.00717.64
8.4.90.0060.00818.58
8.4.80.0130.00719.54
8.4.70.0040.00418.04
8.4.60.0130.00524.04
8.4.50.0100.01018.80
8.4.40.0060.01319.66
8.4.30.0130.00717.64
8.4.20.0000.01520.33
8.4.10.0100.01018.82
8.3.270.0080.01116.62
8.3.260.0130.00716.82
8.3.250.0060.00318.92
8.3.240.0090.01016.73
8.3.230.0070.00216.66
8.3.220.0100.00417.01
8.3.210.0080.00918.39
8.3.200.0110.01016.71
8.3.190.0080.00716.96
8.3.180.0080.01016.49
8.3.170.0060.01219.01
8.3.160.0000.00918.45
8.3.150.0040.01116.60
8.3.140.0070.00718.71
8.3.130.0040.00418.37
8.3.120.0080.00318.72
8.3.110.0090.00916.55
8.3.100.0080.00016.79
8.3.90.0070.00718.48
8.3.80.0000.01018.43
8.3.70.0040.01116.74
8.3.60.0120.00618.31
8.3.50.0170.00917.18
8.3.40.0090.00618.71
8.3.30.0110.00418.71
8.3.20.0070.00021.74
8.3.10.0040.00423.65
8.3.00.0000.00721.95
8.2.290.0140.00620.35
8.2.280.0110.00720.07
8.2.270.0030.01518.96
8.2.260.0180.00016.59
8.2.250.0040.00416.43
8.2.240.0120.00317.09
8.2.230.0030.00520.94
8.2.220.0040.00924.06
8.2.210.0050.00326.77
8.2.200.0050.00516.73
8.2.190.0150.00316.58
8.2.180.0130.00316.32
8.2.170.0120.00922.96
8.2.160.0100.01020.78
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0080.00019.83
8.2.110.0000.00919.27
8.2.100.0100.00317.59
8.2.90.0050.00317.59
8.2.80.0080.00018.49
8.2.70.0000.00817.38
8.2.60.0000.00817.50
8.2.50.0030.00617.55
8.2.40.0030.00520.94
8.2.30.0070.00019.17
8.2.20.0040.00417.75
8.2.10.0050.00317.93
8.2.00.0000.00819.41
8.1.330.0110.00821.77
8.1.320.0110.00816.23
8.1.310.0040.01418.04
8.1.300.0090.00317.71
8.1.290.0040.00418.88
8.1.280.0150.00025.92
8.1.270.0090.00020.57
8.1.260.0080.00026.35
8.1.250.0140.00028.09
8.1.240.0060.00323.96
8.1.230.0050.00521.04
8.1.220.0000.00818.39
8.1.210.0050.00318.77
8.1.200.0080.00017.10
8.1.190.0030.00517.11
8.1.180.0080.00022.12
8.1.170.0030.00618.57
8.1.160.0000.00718.86
8.1.150.0000.00718.76
8.1.140.0040.00422.05
8.1.130.0030.00320.07
8.1.120.0000.00817.21
8.1.110.0040.00417.25
8.1.100.0000.00917.31
8.1.90.0030.00617.36
8.1.80.0050.00317.30
8.1.70.0070.00017.27
8.1.60.0050.00317.34
8.1.50.0040.00417.40
8.1.40.0040.00417.29
8.1.30.0030.00617.51
8.1.20.0000.00817.39
8.1.10.0040.00417.45
8.1.00.0070.00017.20
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0030.00318.37
8.0.270.0000.00817.15
8.0.260.0040.00418.32
8.0.250.0000.00716.88
8.0.240.0020.00516.92
8.0.230.0030.00316.84
8.0.220.0030.00616.84
8.0.210.0070.00016.82
8.0.200.0060.00016.90
8.0.190.0050.00216.88
8.0.180.0040.00416.88
8.0.170.0030.00616.88
8.0.160.0000.00916.77
8.0.150.0070.00016.77
8.0.140.0070.00016.80
8.0.130.0030.00313.19
8.0.120.0080.00016.77
8.0.110.0040.00416.78
8.0.100.0040.00416.84
8.0.90.0000.00716.70
8.0.80.0060.00916.82
8.0.70.0040.00416.85
8.0.60.0070.00016.77
8.0.50.0040.00416.61
8.0.30.0070.01116.98
8.0.20.0040.02117.40
8.0.10.0000.00716.99
8.0.00.0100.00816.62
7.4.330.0050.00016.89
7.4.320.0000.00716.51
7.4.300.0000.00716.46
7.4.290.0030.00316.51
7.4.280.0040.00416.57
7.4.270.0000.00716.40
7.4.260.0080.00016.41
7.4.250.0050.00216.36
7.4.240.0070.00016.52
7.4.230.0080.00016.61
7.4.220.0000.00816.54
7.4.210.0100.00516.62
7.4.200.0040.00416.61
7.4.160.0070.01216.54
7.4.140.0150.00917.86
7.4.130.0120.00616.41
7.4.120.0110.00816.56
7.4.110.0090.01316.63
7.4.100.0100.01316.48
7.4.90.0090.00916.51
7.4.80.0110.00719.39
7.4.70.0070.01116.63
7.4.60.0090.01616.44
7.4.50.0030.01416.57
7.4.40.0130.00316.32
7.4.00.0070.00914.99
7.3.330.0000.00613.09
7.3.320.0050.00013.28
7.3.310.0000.00716.12
7.3.300.0000.00716.31
7.3.290.0030.00316.31
7.3.280.0020.01416.25
7.3.260.0070.01016.49
7.3.240.0100.00916.42
7.3.230.0080.00916.48
7.3.210.0170.00016.26
7.3.200.0100.00716.45
7.3.190.0100.00816.57
7.3.180.0080.00816.51
7.3.170.0040.01516.58
7.3.160.0090.00816.35
7.3.120.0060.00915.09
7.3.110.0060.01214.66
7.3.100.0090.00614.61
7.3.90.0000.00914.97
7.3.80.0030.01214.76
7.3.70.0070.01014.81
7.3.60.0080.00414.89
7.3.50.0070.00714.69
7.3.40.0080.00314.86
7.3.30.0110.00414.46
7.3.20.0040.00816.76
7.3.10.0020.01216.73
7.3.00.0000.01016.71
7.2.330.0090.01216.73
7.2.320.0040.01416.46
7.2.310.0100.00716.65
7.2.300.0040.01516.85
7.2.290.0030.01216.80
7.2.250.0030.01715.33
7.2.240.0030.01714.97
7.2.230.0070.01115.26
7.2.220.0050.00515.25
7.2.210.0060.00615.20
7.2.200.0070.01015.17
7.2.190.0060.00915.13
7.2.180.0040.00815.19
7.2.170.0000.01015.11
7.2.120.0250.00715.66
7.2.110.0310.00915.80
7.2.100.0290.00615.66
7.2.90.0210.00915.80
7.2.80.0190.00815.58
7.2.70.0220.00216.02
7.2.60.0210.00515.91
7.2.50.0180.00915.92
7.2.40.0340.00716.01
7.2.30.0350.00815.96
7.2.20.0260.00815.97
7.2.10.0290.01516.01
7.2.00.0260.00316.11
7.1.330.0060.00615.98
7.1.320.0000.01215.79
7.1.310.0000.01115.63
7.1.300.0060.00615.73
7.1.290.0130.00315.60
7.1.280.0080.00415.95
7.1.270.0140.00015.46
7.1.260.0030.01015.91
5.6.380.0100.00414.40

preferences:
34.97 ms | 403 KiB | 5 Q