What best practices should be followed when sorting arrays with mixed data types in PHP to avoid unexpected results?

When sorting arrays with mixed data types in PHP, it's important to use a custom comparison function to avoid unexpected results. This function should handle the comparison logic based on the data types of the elements being compared. By using a custom comparison function, you can ensure that the sorting process is done correctly regardless of the data types present in the array. 

// Example of sorting an array with mixed data types using a custom comparison function
$array = [3, '2', '1', 4, '5'];

usort($array, function($a, $b) {
    if (is_numeric($a) && is_numeric($b)) {
        return $a - $b;
    } else {
        return strnatcmp($a, $b);
    }
});

print_r($array);

Keywords

type casting array sorting strict comparison usort array_multisort

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