Posted on by jyoti

Using Arr::isAssoc() in Laravel 11.x & Laravel 12.x

In Laravel 11.x, the `Arr::isAssoc()` method is a convenient utility provided by the `Illuminate\Support\Arr` class. It is used to determine whether a given array is associative or indexed. An associative array is one where the keys are not purely sequential integers starting from 0 (e.g., `[‘name’ => ‘John’, ‘age’ => 25]`), while an indexed array has sequential integer keys (e.g., `[0 => ‘apple’, 1 => ‘banana’]`).

How `Arr::isAssoc()` Works?

-> Returns `true` if the array is associative.
-> Returns `false` if the array is indexed.

Example Usage:

<?php
use Illuminate\Support\Arr;

// Example 1: Associative array
$assocArray = ['name' => 'John', 'age' => 25];
$isAssoc = Arr::isAssoc($assocArray); // true

// Example 2: Indexed array
$indexedArray = ['apple', 'banana', 'cherry'];
$isAssoc = Arr::isAssoc($indexedArray); // false

// Example 3: Mixed array (treated as associative)
$mixedArray = [0 => 'apple', 2 => 'banana', 3 => 'cherry'];
$isAssoc = Arr::isAssoc($mixedArray); // true
?>

Explanation:

1. Associative Array: The keys are strings or non-sequential integers.

Example: `[‘name’ => ‘John’, ‘age’ => 25]` → `Arr::isAssoc()` returns `true`.

2. Indexed Array: The keys are sequential integers starting from 0.

Example: `[0 => ‘apple’, 1 => ‘banana’]` → `Arr::isAssoc()` returns `false`.

3. Mixed Array: If the array has non-sequential or missing keys, it is treated as associative.

Example: `[0 => ‘apple’, 2 => ‘banana’]` → `Arr::isAss