PHP multiple array combination algorithm locomotive free login Publish interface Code memo

When the locomotive launches the product, it has the color, size, gender and so on product attributes, need to do not duplicate the combination, becomes the non-repeating array

<?PHPfunctionComb ($a){    $a=Array_filter($a); $out=Array(); if(Count($a) = = 1) {        $r=Array_shift($a); foreach($r  as $v)$out[] =Array($v); return $out; }    foreach($a  as $k=$v){        $b=$a; unset($b[$k]); $r= Comb ($b); foreach($v  as $v 1){            foreach($r  as $v 2)            $out[] =Array_merge(Array($v 1),$v 2); }         Break; }    return $out;}$array 1=Array(Array(' Red ', ' Black ', ' Yellow '),Array(' Boy ', ' Girl '),Array(' S ', ' M ', ' L '));$result= Comb ($array 1);
Print_r($result);
?>

The results returned are as follows:

Array(    [0] = =Array        (            [0] = =Red [1] = =Boy [2] = =S) [1] = =Array        (            [0] = =Red [1] = =Boy [2] = =M) [2] = =Array        (            [0] = =Red [1] = =Boy [2] = =L) [3] = =Array        (            [0] = =Red [1] = =Girl [2] = =S) [4] = =Array        (            [0] = =Red [1] = =Girl [2] = =M) [5] = =Array        (            [0] = =Red [1] = =Girl [2] = =L) [6] = =Array        (            [0] = =Black [1] = =Boy [2] = =S) [7] = =Array        (            [0] = =Black [1] = =Boy [2] = =M) [8] = =Array        (            [0] = =Black [1] = =Boy [2] = =L) [9] = =Array        (            [0] = =Black [1] = =Girl [2] = =S) [+] =Array        (            [0] = =Black [1] = =Girl [2] = =M) [[One] =Array        (            [0] = =Black [1] = =Girl [2] = =L) [+] =Array        (            [0] = =Yellow [1] = =Boy [2] = =S) [+] =Array        (            [0] = =Yellow [1] = =Boy [2] = =M) [+] =Array        (            [0] = =Yellow [1] = =Boy [2] = =L) [[] =Array        (            [0] = =Yellow [1] = =Girl [2] = =S) [+] =Array        (            [0] = =Yellow [1] = =Girl [2] = =M) [+] =Array        (            [0] = =Yellow [1] = =Girl [2] = =L))

PHP multiple array combination algorithm locomotive free login Publish interface Code memo