How do I get this combination? Get the result of permutations and combinations

How do I get this combination? Get the result of permutations and combinations
Properties: Color red, yellow, blue ....
Big size, small ....
Capacity 1g,2g,3g,5g ...
。。。。。。。。。


All combinations of property values are required:
such as red big, red small, red big 1G, red small 1G, red small 2G ... Big Blue,. Blue 1G ....



------Solution--------------------

PHP code

!--? Php$color = Array ("Red", "yellow", "blue"); $size =    Array ("Large", "small"), $cap = Array ("1G", "2G", "3G", "5G"), $foo = Array ($color, $size, $cap); function Get_all ($e) {    $elem _total = count ($e);    $max = 1;        for ($i =0; $i $elem _total; $i + +) {$len = count ($e [$i]) +1;        $elem _size[] = $len;    $max *= $len;         } for ($i =1; $i $max; $i + +) {$m = $i;         $item = "";        $ct = 0;            for ($j =0; $j $elem _total; $j + +) {$n = $m% $elem _size[$j];            $item. = $n-->0? $e [$j] [$n-1]: "";            $ct + = $n >0?1:0;        $m = (int) ($m/$elem _size[$j]);    if ($ct >=2) $all [] = $item; } return $all;} $ret = Get_all ($foo);p rint_r ($ret);? > 
 