(PHP 7) Gets the specified return type of a function

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

(PHP 5, PHP 7) Gets constants public array R

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Computes the intersection of arrays with additional index check

(PECL quickhash >= Unknown) This method deletes an entry from the set

(PHP 5, PHP 7) Gets defined constant public mixed

(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 5 >= 5.4.0, PHP 7) Checks if the trait exists

(PHP >= 5.4.0) Returns whether this extension is temporary