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

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Iteratively reduce the array to a single value using a callback function

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

(PHP 4, PHP 5, PHP 7) Exchanges all keys with their associated values in an array

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

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

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

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

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

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