What is the difference between sort() and usort() functions in PHP?

The main difference between the sort() and usort() functions in PHP is that sort() is used to sort an array in ascending order based on its values, while usort() allows for custom sorting based on a user-defined comparison function. This means that usort() gives more flexibility in how the array is sorted compared to sort(). 

// Example of using sort() function
$numbers = array(4, 2, 8, 6);
sort($numbers);
print_r($numbers); // Output: Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 )

// Example of using usort() function
function customSort($a, $b) {
    return $a <=> $b; // Sort in ascending order
}
usort($numbers, 'customSort');
print_r($numbers); // Output: Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 )

Keywords

sort usort functions PHP difference

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