PHP自定义函数生成笛卡尔积
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2022-03-28 08:22:22
...
";
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
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
)
)
以上就介绍了PHP自定义函数生成笛卡尔积，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。