(PHP 4 >= 4.0.6, PHP 5, PHP 7) Applies the callback to the elements of the given arrays

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Filters elements of an array using a callback function

(PHP 5, PHP 7) Creates an array by using one array for keys and another for its values

(PHP 5 >= 5.1.0, PHP 7) Calculate the product of values in an array

(PHP 4, PHP 5, PHP 7) Extract a slice of the array

(PHP 4, PHP 5, PHP 7) Remove a portion of the array and replace it with something else

(PHP 5 >= 5.1.0, PHP 7) Computes the intersection of arrays using keys for comparison

(PHP 4, PHP 5, PHP 7) Import variables into the current symbol table from an array

(PHP 4, PHP 5, PHP 7) Sort an array in reverse order