array_peek

array_peek.php

<?php
/**
 * Peeks at the first element of an array. Optionally returns the first key 
 * if the 2nd parameter is set to true.
 *
 * @param Array $arr
 * @param Boolean $returnKey
 * @return Mixed $val
 */
function array_peek($arr, $key = false) {
    if ($key === true) {
        $val = key($arr);
    } else {
        $val = array_slice($arr, 0, 1);
        $val = $val[0];
    }
    return $val;
}