What is the purpose of the ksort function in PHP?

The ksort function is a function used for sorting arrays in ascending order based on their keys. It can sort both indexed arrays and associative arrays, reordering the keys while maintaining the relationships between keys and values. The sorted array will be arranged according to the alphabetical order of the keys.

You can easily sort an array by its keys using the ksort function, which is suitable for cases where you need to operate based on key names.