php多个数组组合算法 火车头免登录发布接口代码备忘

火车头发布产品的时候,有颜色、尺码、性别等等产品属性,需要进行不重复的组合,变成不重复的数组

<?php function comb($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 $v1){             foreach ($r As $v2)             $out[] = array_merge(array($v1), $v2);         }         break;     }     return $out; }   $array1 = array(array('Red', 'Black', 'Yellow'),array('Boy','Girl'),array('S', 'M', 'L')); $result = comb($array1);
print_r($result);
?>

返回的结果如下:

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         )      [10] => Array         (             [0] => Black             [1] => Girl             [2] => M         )      [11] => Array         (             [0] => Black             [1] => Girl             [2] => L         )      [12] => Array         (             [0] => Yellow             [1] => Boy             [2] => S         )      [13] => Array         (             [0] => Yellow             [1] => Boy             [2] => M         )      [14] => Array         (             [0] => Yellow             [1] => Boy             [2] => L         )      [15] => Array         (             [0] => Yellow             [1] => Girl             [2] => S         )      [16] => Array         (             [0] => Yellow             [1] => Girl             [2] => M         )      [17] => Array         (             [0] => Yellow             [1] => Girl             [2] => L         )  )

&nbsp;

注:以上内容来自网络

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