将两个 collections 合并为 laravel

Question

我有一个 $sizes collection 这样的：

$sizes =
            collect([
                10 => 'xl',
                11 => 'xxl',
                12 => 'xxxl'
            ]);

还有一个 $colors collection 这样的：

$colors =
            collect([
                20 => 'red',
                21 => 'green',
                22 => 'blue'
            ]);

现在我想创建这样的组合：

$result =
            collect([
                [10 => 'xl' , 20 => 'red'],
                [10 => 'xl' , 21 => 'green'],
                [10 => 'xl' , 22 => 'blue'],
                [11 => 'xxl' , 20 => 'red'],
                [11 => 'xxl' , 21 => 'green'],
                [11 => 'xxl' , 22 => 'blue'],
                [12 => 'xxxl' , 20 => 'red'],
                [12 => 'xxxl' , 21 => 'green'],
                [12 => 'xxxl' , 22 => 'blue']
            ]);

我如何在 laravel 中做到这一点？

Answer 1

这是一个 crossJoin 操作。

文档：https://laravel.com/docs/5.6/collections#method-crossjoin

将两个 collections 合并为 laravel

combine two collections together in laravel

php

laravel

laravel-5.5