(PHP 5 >= 5.5.0, PHP 7) Return the values from a single column in the input array

(PHP 4, PHP 5, PHP 7) Sort an array bool sort

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Removes duplicate values from an array

(PHP 4, PHP 5, PHP 7) Return the current key and value pair from an array and advance the array cursor

(PHP 4, PHP 5, PHP 7) Fetch a key from an array

(PHP 4, PHP 5, PHP 7) Return an array with elements in reverse order

(PHP 4, PHP 5, PHP 7) Shift an element off the beginning of array

(PHP 5 >= 5.1.0, PHP 7) Computes the difference of arrays using a callback function on the keys for comparison

(PHP 4, PHP 5, PHP 7) Return all the keys or a subset of the keys of an array

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Searches the array for a given value and returns the corresponding key if