Laravel filter array based on element value
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Laravel Filter Array Based on Element Value Using Built-In Tools
Introduction
Laravel provides a vast array of tools for working with arrays, one of which is `Arr::where()`. This helper function helps filter an array by applying conditions to the elements within it. In this blog post, we will see how to use it to achieve the specific task of filtering an array based on a particular value and how to write custom code if necessary.
Using Arr::where() for Filtering Array Elements
Consider the following example:
```php
// Example 1 - Using Arr::where()
$filtered_array = Arr::where($original_array, function ($value, $key) {
return $value['type'] === 1;
});
```
Here, `$original_array` is the initial array provided earlier in the example. The code passes a closure as the second argument to filter the array. The closure checks if the value of `'type'` within each element is equal to one and returns only those elements that pass this test. As a result, we get the filtered array containing only elements with `type = 1`.
Using Arr::where() Is Not Always Possible
In some cases, Arr::where() may not be able to filter an array based on the given conditions, or it might cause unexpected results. For example, if the array contains duplicate keys or values within each element, or if the array is nested in other arrays, this approach might not work efficiently. In such scenarios, you can use a custom-written function to achieve your target result.
Writing a Custom Function for Filtering Arrays
Consider the following code snippet:
```php
// Example 2 - Writing a custom function
function filterByType($input_array, $type) {
// Iterate over the array and create a new filtered array
$filtered_array = [];
foreach ($input_array as $key => $value) {
if ($value['type'] === $type) {
// Only add elements with the target type to the filtered array
$filtered_array[$key] = $value;
}
}
return $filtered_array;
}
```
Here, we pass an array as input, along with a `type` variable. The function iterates through the input array and creates a new filtered array that only includes elements with the specified type. This approach ensures that all valid elements are present in the filtered array regardless of the complexity or nested structure within the given arrays.
Conclusion
In this blog post, you have learned how to filter an array based on the value of a particular element using Arr::where() and how to write custom functions if the built-in tool is not suitable for your case. Always remember that it is crucial to understand the type of data being processed and choose the most efficient approach accordingly. For more information on Laravel arrays and other helpful tips, visit https://laravelcompany.com.