Using PHP sort() Function to Sort Arrays in Ascending Order

In PHP, the built‑in sort function provides a simple way to sort an array in ascending order.

The function signature is:

sort(array &$array, int $sort_flags = SORT_REGULAR): bool

Parameters: $array: the array to be sorted (required). $sort_flags: optional flag that determines the sorting behavior; default is SORT_REGULAR. Other options include SORT_NUMERIC and SORT_STRING.

The function returns true on success, false otherwise.

Example for sorting strings:

<?php
$fruits = array("apple", "orange", "banana", "grape");
sort($fruits);
foreach ($fruits as $fruit) {
    echo $fruit . " ";
}
?>

Output: apple banana grape orange Example for sorting numbers with SORT_NUMERIC:

<?php
$numbers = array(2, 30, 5, 10, 1);
sort($numbers, SORT_NUMERIC);
foreach ($numbers as $number) {
    echo $number . " ";
}
?>

Output: 1 2 5 10 30 Note that sort modifies the original array in place and does not return a new sorted array; you can also specify different sorting flags to meet various needs.