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

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

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

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

(PHP 4, PHP 5, PHP 7) Apply a user supplied function to every member of an array

(PHP 5, PHP 7) Apply a user function recursively to every member of an array

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

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

(PHP 4, PHP 5, PHP 7) Create an array array array