What are some alternative solutions for sorting array indexes in PHP besides the asort() function?

When sorting array indexes in PHP, an alternative solution to using the asort() function is to use the ksort() function. ksort() sorts an array by its keys in ascending order, while maintaining key to data correlations. This can be useful when you want to sort an array based on its keys rather than its values.

// Sample array
$array = array("b" => 2, "a" => 1, "c" => 3);

// Sort array by keys in ascending order
ksort($array);

// Output sorted array
print_r($array);