(PHP 4, PHP 5, PHP 7) Pad array to the specified length with a value

(PHP 4, PHP 5, PHP 7) Set the internal pointer of an array to its last element

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Alias of

(PHP 5 >= 5.3.0, PHP 7) Replaces elements from passed arrays into the first array recursively

(PHP 4, PHP 5, PHP 7) Push one or more elements onto the end of array

(PHP 4, PHP 5, PHP 7) Sort multiple or multi-dimensional arrays

(PHP 4, PHP 5, PHP 7) Sort an array in reverse order and maintain index association

(PHP 4, PHP 5, PHP 7) Sort an array and maintain index association

(PHP 4, PHP 5, PHP 7) Sort an array by key bool

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Changes the case of all keys in an array