PHP offers a powerful set of built-in array functions that make developers' lives easier.
Some of the most useful PHP array functions include array_map(), array_filter(), array_reduce(), and array_merge().
Other important array functions are array_keys(), array_values(), in_array(), array_search(), array_slice(), array_unique(), array_column(), and array_combine().
Mastering these array functions can significantly boost productivity and make PHP code more efficient and readable.