How can one efficiently group array elements in PHP based on a common feature type?

To efficiently group array elements in PHP based on a common feature type, you can use the array_reduce function along with a callback function that checks for the common feature type and groups the elements accordingly. The callback function should use the common feature type as the key to group the elements in a new associative array. 

// Sample array with elements to be grouped
$elements = [
    ['name' => 'John', 'age' => 30],
    ['name' => 'Jane', 'age' => 25],
    ['name' => 'Alice', 'age' => 30],
    ['name' => 'Bob', 'age' => 25],
];

// Group elements based on a common feature type (e.g., age)
$groupedElements = array_reduce($elements, function ($result, $element) {
    $featureType = $element['age']; // Change this to the desired common feature type
    $result[$featureType][] = $element;
    return $result;
}, []);

// Output the grouped elements
print_r($groupedElements);

Keywords

array grouping elements common feature type

Related Questions