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Array Functions
PHP Manual

# array_rand

(PHP 4, PHP 5)

array_rand — Pick one or more random entries out of an array

### Description

mixed array_rand ( array `$array` [, int `$num` = 1 ] )

Picks one or more random entries out of an array, and returns the key (or keys) of the random entries.

### Parameters

`array`

  The input array.

`num`

  Specifies how many entries should be picked.

### Return Values

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. Trying to pick more elements than there are in the array will result in an `E_WARNING` level error, and NULL will be returned.

### Changelog

Version | Description
--- | ---
5.2.10 | The resulting array of keys is no longer shuffled.

### Examples

Example #1 array_rand() example

`<?php
$input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank");
$rand_keys = array_rand($input, 2);
echo $input[$rand_keys[0]] . "\n";
echo $input[$rand_keys[1]] . "\n";
?>`

### See Also

- shuffle() - Shuffle an array

array_push
array_reduce
Array Functions
PHP Manual