<?php
$color = array('red', 'green');
$size = array(39, 40, 41);
$local = array('beijing', 'shanghai'); echo "<pre>";
print_r(combineDika($color, $size, $local)); /**
* 所有数组的笛卡尔积
*
* @param unknown_type $data
*/
function combineDika() {
$data = func_get_args();
$cnt = count($data);
$result = array();
foreach($data[0] as $item) {
$result[] = array($item);
}
for($i = 1; $i < $cnt; $i++) {
$result = combineArray($result,$data[$i]);
}
return $result;
} /**
* 两个数组的笛卡尔积
*
* @param unknown_type $arr1
* @param unknown_type $arr2
*/
function combineArray($arr1,$arr2) {
$result = array();
foreach ($arr1 as $item1) {
foreach ($arr2 as $item2) {
$temp = $item1;
$temp[] = $item2;
$result[] = $temp;
}
}
return $result;
}
?> 运行结果：
Array
(
[0] => Array
(
[0] => red
[1] => 39
[2] => beijing
) [1] => Array
(
[0] => red
[1] => 39
[2] => shanghai
) [2] => Array
(
[0] => red
[1] => 40
[2] => beijing
) [3] => Array
(
[0] => red
[1] => 40
[2] => shanghai
) [4] => Array
(
[0] => red
[1] => 41
[2] => beijing
) [5] => Array
(
[0] => red
[1] => 41
[2] => shanghai
) [6] => Array
(
[0] => green
[1] => 39
[2] => beijing
) [7] => Array
(
[0] => green
[1] => 39
[2] => shanghai
) [8] => Array
(
[0] => green
[1] => 40
[2] => beijing
) [9] => Array
(
[0] => green
[1] => 40
[2] => shanghai
) [10] => Array
(
[0] => green
[1] => 41
[2] => beijing
) [11] => Array
(
[0] => green
[1] => 41
[2] => shanghai
) ) https://blog.csdn.net/tf198910/article/details/44957917