How can a nested array structure be converted into a simple array structure in PHP?

To convert a nested array structure into a simple array structure in PHP, you can use recursion to flatten the array. This involves iterating through the nested arrays and adding their elements to a new simple array. By recursively flattening the nested arrays, you can create a single-level array with all the elements. 

function flattenArray($array) {
    $result = [];
    
    foreach ($array as $element) {
        if (is_array($element)) {
            $result = array_merge($result, flattenArray($element));
        } else {
            $result[] = $element;
        }
    }
    
    return $result;
}

$nestedArray = [1, 2, [3, 4, [5, 6]], 7];
$simpleArray = flattenArray($nestedArray);

print_r($simpleArray);

Keywords

nested array simple array PHP array_merge_recursive multidimensional array

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