(PHP 4, PHP 5, PHP 7) Sort an array using a case insensitive "natural order" algorithm

(PHP 5, PHP 7) Computes the intersection of arrays with additional index check, compares indexes by a callback

(PHP 4, PHP 5, PHP 7) Rewind the internal array pointer

(PHP 4, PHP 5, PHP 7) Sort an array by keys using a user-defined comparison function

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Merge two or more arrays recursively

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Computes the difference of arrays

(PHP 4, PHP 5, PHP 7) Shuffle an array bool shuffle

(PHP 4, PHP 5, PHP 7) Counts all the values of an array

(PHP 4, PHP 5, PHP 7) Assign variables as if they were an array

(PHP 5, PHP 7) Computes the intersection of arrays with additional index check, compares data by a callback