What is the purpose of the sort function in PHP?

In PHP, the sort() function is used to sort arrays in ascending order. This function changes the order of the elements in the array, rearranging them in ascending order. This means that the elements in the array will be sorted from smallest to largest based on their values.

For example, consider the following example:

$numbers = array(4, 2, 8, 6);
sort($numbers);
print_r($numbers);

The output will be [2, 4, 6, 8] because the sort() function sorted the array $numbers in ascending order.

Please note that the sort() function will modify the original array and return a boolean value true to indicate successful sorting, or false if sorting fails. If you want to keep the original array unchanged, you can use the asort() function to sort associative arrays, or use the array_multisort() function to create a new sorted array.