How Can I Filter a Two-Dimensional PHP Array Based on a Specific Key\'s Value?

Filtering a Two-Dimensional Array by Value

Filtering a two-dimensional array by value requires selecting specific elements based on a particular criterion. In this case, we aim to filter an array based on a value in the "name" key.

Implementation

To achieve this, we can leverage PHP's native array_filter function, which takes an array and a callback function as arguments. The callback function defines the filtering criteria.

$new = array_filter($arr, function ($var) {
    return ($var['name'] == 'CarEnquiry');
});

In this example, the callback checks if the "name" key of each element in the $arr array is equal to 'CarEnquiry'. If it matches, the element is included in the filtered array $new.

Dynamic Filtering

To make the filtering more versatile, allowing different search values, we can encapsulate the value to be filtered in a variable:

$filterBy = 'CarEnquiry'; // or Finance

$new = array_filter($arr, function ($var) use ($filterBy) {
    return ($var['name'] == $filterBy);
});

By assigning the desired filter value to the $filterBy variable, you can dynamically change the filtering criteria.

With this approach, you can efficiently filter two-dimensional arrays by any desired value within a specified key.

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