laravel将多个数组的集合合并成一个数组的集合/拆分成多个数组

//chunk()集合拆分

$collection = collect([1, 2, 3, 4, 5, 6, 7]);//数组转为集合

$chunks = $collection->chunk(4);//chunk是拆分每一个数组的个数

$chunks->toArray(); //结果转成数组

// [[1, 2, 3, 4], [5, 6, 7]]

//collapse()集合合并

$collection = collect([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

$collapsed = $collection->collapse();

$collapsed->all();

// [1, 2, 3, 4, 5, 6, 7, 8, 9]


//array_collapse()数组直接合并

$array = array_collapse([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

// [1, 2, 3, 4, 5, 6, 7, 8, 9]