In PHP, what are some key considerations to keep in mind when sorting arrays based on specific criteria, such as sorting by name and path in a multidimensional array?

When sorting arrays based on specific criteria in PHP, it is important to use the appropriate sorting function that allows for custom comparison logic. For sorting multidimensional arrays by specific keys, the `usort` function can be used along with a custom comparison function that defines the sorting criteria. This comparison function should compare the specific keys of the elements being sorted to determine their order. 

// Sample multidimensional array
$users = [
    ['name' => 'Alice', 'path' => '/users/alice'],
    ['name' => 'Bob', 'path' => '/users/bob'],
    ['name' => 'Eve', 'path' => '/users/eve'],
];

// Custom comparison function to sort by name
usort($users, function($a, $b) {
    return strcmp($a['name'], $b['name']);
});

// Custom comparison function to sort by path
usort($users, function($a, $b) {
    return strcmp($a['path'], $b['path']);
});

Keywords

PHP array sorting multidimensional array usort custom sorting algorithm

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