note 126993 deleted from function.array-rand by cmb

Note Submitter: divinity76+spam at gmail dot com ---- for a cryptographically secure version (reviewed at https://codereview.stackexchange.com/questions/275832/cryptographically-secure-version-of-the-core-array-rand-function ), try <?php /** * retrieve a random key from an array, using a cryptographically secure rng. * - it does the same as array_rand(), except that this one use a cryptographically secure rng. * - relatively speaking, it should be significantly slower and more memory hungry than array_rand(), because it is creating a copy of all the keys of the array.. * * @param array $arr * @throws ValueError if array is empty * @return mixed */ function array_rand_cryptographically_secure(array $array)/*: int|string*/ { $max = count($array) - 1; if ($max < 0) { throw new ValueError ('Argument #1 ($array) cannot be empty'); } if (function_exists('array_is_list') && array_is_list($array)) { // optimization, this avoids creating a copy of all the keys return random_int(0, $max); } return array_keys($array)[random_int(0, $max)]; }