Laravel Array Helper Function: isAssoc (Checking If An Array Is Associative)

isAssoc(array $array)

The isAssoc helper method can be used to determine if a given $array is an associative array or not. The provided documentation for the isAssoc method states that an array is associative if it does not have sequential numeric keys beginning with zero. However, in practice the actual results are slightly more nuanced:

 1<?php
 2 
 3use Illuminate\Support\Arr;
 4 
 5// false
 6$isAssoc = Arr::isAssoc([0,1,2,3]);
 7 
 8// false
 9$isAssoc = Arr::isAssoc([1,2,3,4]);
10 
11// false
12$isAssoc = Arr::isAssoc([2,3,4,6]);
13 
14// true
15$isAssoc = Arr::isAssoc([
16    'associative' => 'array'
17]);
18 
19// false
20$isAssoc = Arr::isAssoc([
21    0 => 'A',
22    1 => 'B',
23    2 => 'C'
24]);

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