Question

i have a code giving me possible combinations, but its missing the combinations of each array. please let me know how i can generate the combinations of each array as well. like after running stated code i will get possible combinations….but i need the combinations like (rough,medium,small) as well…..

$array1 = array('rough', 'smooth', 'coarse');
$array2 = array('shiny', 'matte', 'rough');
$array3 = array('very large', 'large', 'medium', 'small');

foreach($array1 as $i)
    foreach($array2 as $j)
        foreach($array3 as $k)
            $output[] = "$i, $j, $k";

var_dump($output);

Answer 1

$array1 = array('rough', 'smooth', 'coarse');
$array2 = array('shiny', 'matte', 'rough');
$array3 = array('very large', 'large', 'medium', 'small');

$array=array_merge($array1,$array2,$array3);

$combinations=array();
for($x=0;$x<(count($array)-2);$x++) {
    $a=$array[$x];
    for ($y=$x+1;$y<count($array);$y++) {
        $b=$array[$y];
        for ($z=$y+1;$z<count($array);$z++) {
            $c=$array[$z];
            $combinations[]="$a, $b, $c";
        }
    }
}

This outputs every possible combination of all the values, without repeating any. As shown below:

Array
(
    [0] => rough, smooth, coarse
    [1] => rough, smooth, shiny
    [2] => rough, smooth, matte
    [3] => rough, smooth, rough
    [4] => rough, smooth, very large
    [5] => rough, smooth, large
    [6] => rough, smooth, medium
    [7] => rough, smooth, small
    [8] => rough, coarse, shiny
    [9] => rough, coarse, matte
    [10] => rough, coarse, rough
    [11] => rough, coarse, very large
    [12] => rough, coarse, large
    [13] => rough, coarse, medium
    [14] => rough, coarse, small
    [15] => rough, shiny, matte
    [16] => rough, shiny, rough
    [17] => rough, shiny, very large
    [18] => rough, shiny, large
    [19] => rough, shiny, medium
    [20] => rough, shiny, small
    [21] => rough, matte, rough
    [22] => rough, matte, very large
    [23] => rough, matte, large
    [24] => rough, matte, medium
    [25] => rough, matte, small
    [26] => rough, rough, very large
    [27] => rough, rough, large
    [28] => rough, rough, medium
    [29] => rough, rough, small
    [30] => rough, very large, large
    [31] => rough, very large, medium
    [32] => rough, very large, small
    [33] => rough, large, medium
    [34] => rough, large, small
    [35] => rough, medium, small
    [36] => smooth, coarse, shiny
    [37] => smooth, coarse, matte
    [38] => smooth, coarse, rough
    [39] => smooth, coarse, very large
    [40] => smooth, coarse, large
    [41] => smooth, coarse, medium
    [42] => smooth, coarse, small
    [43] => smooth, shiny, matte
    [44] => smooth, shiny, rough
    [45] => smooth, shiny, very large
    [46] => smooth, shiny, large
    [47] => smooth, shiny, medium
    [48] => smooth, shiny, small
    [49] => smooth, matte, rough
    [50] => smooth, matte, very large
    [51] => smooth, matte, large
    [52] => smooth, matte, medium
    [53] => smooth, matte, small
    [54] => smooth, rough, very large
    [55] => smooth, rough, large
    [56] => smooth, rough, medium
    [57] => smooth, rough, small
    [58] => smooth, very large, large
    [59] => smooth, very large, medium
    [60] => smooth, very large, small
    [61] => smooth, large, medium
    [62] => smooth, large, small
    [63] => smooth, medium, small
    [64] => coarse, shiny, matte
    [65] => coarse, shiny, rough
    [66] => coarse, shiny, very large
    [67] => coarse, shiny, large
    [68] => coarse, shiny, medium
    [69] => coarse, shiny, small
    [70] => coarse, matte, rough
    [71] => coarse, matte, very large
    [72] => coarse, matte, large
    [73] => coarse, matte, medium
    [74] => coarse, matte, small
    [75] => coarse, rough, very large
    [76] => coarse, rough, large
    [77] => coarse, rough, medium
    [78] => coarse, rough, small
    [79] => coarse, very large, large
    [80] => coarse, very large, medium
    [81] => coarse, very large, small
    [82] => coarse, large, medium
    [83] => coarse, large, small
    [84] => coarse, medium, small
    [85] => shiny, matte, rough
    [86] => shiny, matte, very large
    [87] => shiny, matte, large
    [88] => shiny, matte, medium
    [89] => shiny, matte, small
    [90] => shiny, rough, very large
    [91] => shiny, rough, large
    [92] => shiny, rough, medium
    [93] => shiny, rough, small
    [94] => shiny, very large, large
    [95] => shiny, very large, medium
    [96] => shiny, very large, small
    [97] => shiny, large, medium
    [98] => shiny, large, small
    [99] => shiny, medium, small
    [100] => matte, rough, very large
    [101] => matte, rough, large
    [102] => matte, rough, medium
    [103] => matte, rough, small
    [104] => matte, very large, large
    [105] => matte, very large, medium
    [106] => matte, very large, small
    [107] => matte, large, medium
    [108] => matte, large, small
    [109] => matte, medium, small
    [110] => rough, very large, large
    [111] => rough, very large, medium
    [112] => rough, very large, small
    [113] => rough, large, medium
    [114] => rough, large, small
    [115] => rough, medium, small
    [116] => very large, large, medium
    [117] => very large, large, small
    [118] => very large, medium, small
    [119] => large, medium, small
)