Summary of usage of collection class in Laravel (code)

1. Sum to find the sum of prices

We will learnflatMapmapsumand other very practical Method

##

collect($arr)->pluck('order_products.*.price')->flatten(1)->sum();

2. Formatting the boarding gate

mapand the application scenarios ofmap

It is a mechanism to obtain data through API and convert the data into scores. We will first try the

method, and then use Laravel's Collection to optimize and reconstructhttps: //api.github.com/users/...

##General solution:

##collection refactoring:

4. Convert comment format

Theimplodemethod in

is actually It is very useful in certain scenarios. Combined withmap, we can customize the format of each element with a high degree of freedom. This video is about converting the normal format to theMarkdownformat.

##5. Calculate monthly turnover

zipmethod to solve the problem of two arrays.

#6. Reduce to create lookup arrayIn Laravel Collection, there is another very common method:

, this is very useful when we create a lookup array, so that we can use Collection to reconstruct a complex array and turn it into a simple key value lookup array.

collect($employees)->pluck('email','name')

summethod and someCommon application scenarios of groupBy

The above is the detailed content of Summary of usage of collection class in Laravel (code). For more information, please follow other related articles on the PHP Chinese website!