how to count nested object inside array in php

Question

I have data like this :

array: [
   0: [
     0: {fruits: "apple", price: "15000"},
     1: {fruits: "orange", price: "12000"},
   ],
   1: [
     0: {fruits: "grape", price: "13000"},
     1: {fruits: "chery", price: "14000"},
     2: {fruits: "longan", price: "12000"},
   ],
   2: [
     0: {fruits: "manggo", price: "16000"},
     1: {fruits: "dragon fruit", price: "17000"},
     2: {fruits: "avocado", price: "18000"},
     3: {fruits: "coconut", price: "19000"},
   ],
]

I wanna ask how to know the length of the second data, I already try using nested loop but the result is not same with my expectation my data come like this :

array: [
  0: {fruits: "apple", price: "15000"},
  1: {fruits: "orange", price: "12000"},
  2: {fruits: "grape", price: "13000"},
  3: {fruits: "chery", price: "14000"},
  4: {fruits: "longan", price: "12000"},
  5: {fruits: "manggo", price: "16000"},
  6: {fruits: "dragon fruit", price: "17000"},
  7: {fruits: "avocado", price: "18000"},
  8: {fruits: "coconut", price: "19000"},
]

and when I try to count all my data the result : 9, and how to count my total object inside my array? Expectation Result :

array 0 = 2, array 1 = 3, array 2 = 4

yes sir, I wanna count of the number of my element inside the group — ProLuck
– ProLuck, Commented Dec 17, 2020 at 3:46

lagbox · Accepted Answer · 2020-12-18 10:29:17Z

3

You can use array_map (which in this case is more than sufficient enough):

array_map('count', $fruits)

If you prefer you can use the Collection methods to help get your count from each "group":

collect($fruits)->map(fn ($i) => count($i))->all()

Or shorter:

collect($fruits)->map('count')->all()

We create a Collection from the array and use the map method to iterate through each "group" (element of that array) and return the count of the "group". Then to get the array from the Collection, all.

PHP.net Manual - Array Functions - array_map

Laravel 8.x Docs - Collections - Available Methods - map

Laravel 8.x Docs - Collections - Available Methods - all

edited Dec 18, 2020 at 10:29

answered Dec 17, 2020 at 3:47

lagbox

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4 Comments

ProLuck Over a year ago

okey sir, thanks for giving the answer from this question, and you giving the documentation too. precise, concise, and clear answer

lagbox Over a year ago

@LuckALip np, I added a straight PHP option as well ... good luck and have fun

ProLuck Over a year ago

okey sure noted for me, thanks for everything

bhucho Over a year ago

I agree with @lagbox sir, array_map is sufficient as map method of collection uses array_map in background

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