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

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

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

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

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

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

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

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

(PHP 5, PHP 7) Computes the difference of arrays by using a callback function for data comparison

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