[php-src] Issue #9199: Function for getting first or last value from array

Issue: https://github.com/php/php-src/issues/9199 Author: timint ### Description I always felt PHP was lacking a convenient way of retrieving the first or last value from an array. Looking at Stackoverflow this has been a burning hot topic. https://stackoverflow.com/questions/1921421/get-the-first-element-of-an-array Some suggests shifting values from the array, some suggests moving the internal pointer. Some suggests variable duplication and grabbing the values it's first or last numerical index key. Examples seen: ``` $first = reset($arr); // Moves the pointer position $first = array_shift(array_values($array)); // Throws strict error foreach ($array as $first) break; $first = $array[array_keys($array)[0]]; ``` It doesn't need to be this complex. I am proposing adding array_first() and array_last()? To get the first or last value of an array without shifting it, or moving the internal cursor. To demonstrate: ``` // Get first value from array without shifting it or moving internal cursor function array_first(array $array):mixed { return reset($array) || false; } // Get last value from array without shifting it or moving internal cursor function array_last(array $array):mixed { return end($array) || false; } ``` Comments or any help in creating an RFC is greatly appreciated.