3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = array('A', 'B'); $array2 = array('1', '2', '3'); $num = count($array2); //The total number of possible combinations $total = pow(2, $num); $temp = array(); //Loop through each possible combination for ($i = 0; $i < $total; $i++) { //For each combination check if each bit is set for ($j = 0; $j < $num; $j++) { //Is bit $j set in $i? if (pow(2, $j) & $i) $ff = $ff.''.$array2[$j]; } } print_r($ff);

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)
8.3.60.0130.00316.38
8.3.50.0130.00322.11
8.3.40.0060.01118.84
8.3.30.0070.01018.93
8.3.20.0040.00420.30
8.3.10.0040.00423.66
8.3.00.0040.01117.91
8.2.180.0120.01216.50
8.2.170.0100.01022.96
8.2.160.0100.00320.45
8.2.150.0050.00224.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00420.95
8.2.110.0100.00022.25
8.2.100.0120.00017.83
8.2.90.0050.00219.11
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0000.00818.05
8.2.50.0060.00318.07
8.2.40.0030.00619.76
8.2.30.0070.00418.37
8.2.20.0080.00017.78
8.2.10.0040.00418.05
8.2.00.0000.00717.67
8.1.280.0070.00725.92
8.1.270.0090.00323.99
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0060.00323.84
8.1.230.0070.00319.08
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0030.00917.13
8.1.190.0000.00917.10
8.1.180.0040.00418.10
8.1.170.0060.00318.59
8.1.160.0000.00721.92
8.1.150.0040.00418.83
8.1.140.0000.00717.36
8.1.130.0000.00717.73
8.1.120.0000.00717.46
8.1.110.0040.00417.40
8.1.100.0050.00317.49
8.1.90.0070.00017.46
8.1.80.0040.00417.35
8.1.70.0000.00717.29
8.1.60.0060.00317.53
8.1.50.0000.00817.55
8.1.40.0080.00017.46
8.1.30.0040.00417.57
8.1.20.0040.00417.58
8.1.10.0030.00517.52
8.1.00.0060.00317.38
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.37
8.0.270.0000.00817.26
8.0.260.0030.00317.23
8.0.250.0070.00017.01
8.0.240.0000.00716.95
8.0.230.0040.00416.88
8.0.220.0040.00416.84
8.0.210.0030.00316.89
8.0.200.0000.00616.87
8.0.190.0000.00717.09
8.0.180.0030.00316.88
8.0.170.0060.00316.95
8.0.160.0000.00817.04
8.0.150.0000.00716.79
8.0.140.0100.00016.92
8.0.130.0000.00613.37
8.0.120.0040.00416.81
8.0.110.0040.00416.94
8.0.100.0060.00316.73
8.0.90.0070.00016.82
8.0.80.0070.01016.93
8.0.70.0000.00716.98
8.0.60.0000.00716.79
8.0.50.0050.00316.89
8.0.30.0060.01217.11
8.0.20.0130.00817.40
8.0.10.0000.00816.84
8.0.00.0090.00916.70
7.4.330.0050.00015.15
7.4.320.0030.00316.55
7.4.300.0030.00316.44
7.4.290.0030.00516.43
7.4.280.0070.00016.41
7.4.270.0070.00016.53
7.4.260.0070.00016.48
7.4.250.0030.00316.55
7.4.240.0000.00716.46
7.4.230.0050.00316.60
7.4.220.0090.00616.51
7.4.210.0100.00316.38
7.4.200.0000.00716.49
7.4.160.0060.00916.79
7.4.150.0000.01817.40
7.4.140.0060.01217.86
7.4.130.0090.00816.50
7.4.120.0090.00916.45
7.4.110.0110.01116.48
7.4.100.0060.01216.63
7.4.90.0070.01016.48
7.4.80.0110.01119.39
7.4.70.0060.00916.51
7.4.60.0130.00916.62
7.4.50.0050.00016.35
7.4.40.0130.00516.67
7.4.30.0030.01316.57
7.4.00.0070.00715.11
7.3.330.0050.00013.17
7.3.320.0000.00613.05
7.3.310.0070.00016.34
7.3.300.0000.00716.24
7.3.290.0090.00616.25
7.3.280.0100.00916.32
7.3.270.0150.00617.40
7.3.260.0070.01516.30
7.3.250.0090.00916.40
7.3.240.0070.01116.38
7.3.230.0100.01316.41
7.3.210.0110.00716.49
7.3.200.0060.01019.39
7.3.190.0060.01016.49
7.3.180.0060.00916.38
7.3.170.0120.00616.41
7.3.160.0060.01516.37
7.3.120.0060.00914.87
7.2.330.0030.01316.50
7.2.320.0150.00916.40
7.2.310.0100.00616.40
7.2.300.0110.00716.63
7.2.290.0060.00916.48
7.2.60.0180.00316.80
7.2.00.0000.00819.37
7.1.200.0100.00315.98
7.1.100.0040.00717.77
7.1.70.0040.00717.23
7.1.60.0140.01019.25
7.1.50.0030.02016.98
7.1.00.0030.07722.34
7.0.200.0210.00416.48
7.0.140.0100.06322.10
7.0.60.0030.04319.96
7.0.50.0000.08317.83
7.0.40.0100.07320.07
7.0.30.0570.07020.18
7.0.20.0270.08020.30
7.0.10.0000.06320.13
7.0.00.0100.08720.00
5.6.280.0070.07020.86
5.6.210.0170.03720.47
5.6.200.0100.03318.09
5.6.190.0000.04720.56
5.6.180.0200.03320.68
5.6.170.0400.06720.50
5.6.160.0130.05720.33
5.6.150.0030.04718.12
5.6.140.0100.04018.21
5.6.130.0100.03318.12
5.6.120.0000.04720.98
5.6.110.0030.08721.05
5.6.100.0030.04020.95
5.6.90.0030.06320.97
5.6.80.0030.08720.50
5.6.70.4670.04320.38
5.5.350.0200.08020.44
5.5.340.0070.08718.04
5.5.330.0030.08320.40
5.5.320.0300.08720.29
5.5.310.0370.08720.33
5.5.300.0000.05017.88
5.5.290.0030.06018.01
5.5.280.0100.04720.77
5.5.270.0030.04320.63
5.5.260.0130.06320.64
5.5.250.0170.06020.57
5.5.240.0400.06020.26
5.4.450.0700.06319.55
5.4.440.0930.05719.63
5.4.430.0070.05719.13
5.4.420.0930.07319.48
5.4.410.0100.05318.80
5.4.400.0370.05018.77
5.4.390.0270.05318.76
5.4.380.0230.05318.75
5.4.370.0000.04318.69
5.4.360.0030.04018.61
5.4.350.0080.03411.97
5.4.340.0060.03911.97
5.4.320.0070.04312.46
5.4.310.0090.04912.45
5.4.300.0100.04612.46
5.4.290.0090.04912.45
5.4.280.0040.04612.35
5.4.270.0060.03812.35
5.4.260.0080.03712.35
5.4.250.0060.03912.35
5.4.240.0060.03712.35
5.4.230.0070.04812.34
5.4.220.0060.03612.34
5.4.210.0040.03812.34
5.4.200.0070.03612.34
5.4.190.0070.03512.34
5.4.180.0070.03412.34
5.4.170.0040.03812.35
5.4.160.0040.03812.35
5.4.150.0030.03912.34
5.4.140.0090.04712.02
5.4.130.0110.04312.02
5.4.120.0070.04911.97
5.4.110.0100.04611.97
5.4.100.0070.03311.96
5.4.90.0090.03411.96
5.4.80.0060.05011.96
5.4.70.0030.04511.96
5.4.60.0060.03611.96
5.4.50.0050.03711.96
5.4.40.0060.03611.95
5.4.30.0050.03711.95
5.4.20.0070.03711.95
5.4.10.0050.03611.95
5.4.00.0050.03911.44
5.3.290.0070.04012.80
5.3.280.0070.04212.71
5.3.270.0070.04312.72
5.3.260.0070.04712.72
5.3.250.0070.03812.72
5.3.240.0070.03512.72
5.3.230.0060.03712.71
5.3.220.0060.03612.68
5.3.210.0070.03712.68
5.3.200.0070.03512.68
5.3.190.0090.03512.68
5.3.180.0040.03812.68
5.3.170.0080.03612.66
5.3.160.0030.04012.67
5.3.150.0030.04012.67
5.3.140.0080.03512.66
5.3.130.0070.04012.66
5.3.120.0060.03912.66
5.3.110.0050.04012.65
5.3.100.0040.03812.11
5.3.90.0040.03912.08
5.3.80.0080.03412.07
5.3.70.0040.03712.07
5.3.60.0090.03212.06
5.3.50.0090.03312.00
5.3.40.0080.03512.00
5.3.30.0060.03611.95
5.3.20.0090.03611.72
5.3.10.0060.03411.69
5.3.00.0020.04011.68
5.2.170.0060.0309.18
5.2.160.0050.0299.19
5.2.150.0010.0349.18
5.2.140.0040.0309.18
5.2.130.0060.0279.14
5.2.120.0030.0319.14
5.2.110.0050.0309.14
5.2.100.0050.0299.14
5.2.90.0030.0309.14
5.2.80.0050.0309.13
5.2.70.0040.0309.14
5.2.60.0050.0309.08
5.2.50.0030.0309.05
5.2.40.0070.0379.03
5.2.30.0070.0279.01
5.2.20.0100.0289.00
5.2.10.0040.0298.92
5.2.00.0070.0268.78
5.1.60.0030.0248.07
5.1.50.0040.0258.06
5.1.40.0040.0258.04
5.1.30.0040.0268.39
5.1.20.0050.0348.41
5.1.10.0050.0268.14
5.1.00.0030.0268.14
5.0.50.0040.0216.63
5.0.40.0030.0206.49
5.0.30.0050.0326.30
5.0.20.0040.0246.27
5.0.10.0060.0186.25
5.0.00.0060.0286.24
4.4.90.0030.0154.78
4.4.80.0050.0144.76
4.4.70.0010.0174.75
4.4.60.0030.0154.76
4.4.50.0030.0154.77
4.4.40.0050.0234.71
4.4.30.0030.0154.76
4.4.20.0040.0144.85
4.4.10.0030.0154.85
4.4.00.0020.0264.75
4.3.110.0050.0154.66
4.3.100.0040.0204.66
4.3.90.0020.0164.64
4.3.80.0010.0324.59
4.3.70.0010.0164.63
4.3.60.0020.0154.63
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0010.0183.33
4.3.20.0060.0143.31
4.3.10.0030.0153.27
4.3.00.0100.0237.21

preferences:
42.77 ms | 401 KiB | 5 Q