array_rand Pick one or more random keys out of an array &reftitle.description; intstringarrayarray_rand arrayarray intnum1 Picks one or more random entries out of an array, and returns the key (or keys) of the random entries. &caution.cryptographically-insecure; &reftitle.parameters; array The input array. Cannot be empty. num Specifies how many entries should be picked. Must be greater than zero, and less than or equal to the length of array &reftitle.returnvalues; When picking only one entry, array_rand returns the key for a random entry. Otherwise, an array of keys for the random entries is returned. This is done so that random keys can be picked from the array as well as random values. If multiple keys are returned, they will be returned in the order they were present in the original array. &reftitle.errors; Throws a ValueError if array is empty, or if num is out of range. &reftitle.changelog; &Version; &Description; 8.0.0 array_rand now throws a ValueError if num is out of range; previously an E_WARNING was raised, and the function returned &null;. 8.0.0 array_rand now throws a ValueError if array is empty; previously an E_WARNING was raised, and the function returned &null;. 7.1.0 The internal randomization algorithm has been changed to use the Mersenne Twister Random Number Generator instead of the libc rand function. &reftitle.examples; ]]> &reftitle.seealso; Random\Randomizer::pickArrayKeys Random\Randomizer::shuffleArray