PHP array_rand() Function

From http://www.w3schools.com (Copyright Refsnes Data)

# PHP array_rand() Function

Complete PHP Array Reference

## Definition and Usage

The array_rand() function returns a random key from an array, or it returns an array of random keys if you specify that the function should return more than one key.

## Syntax

    array_rand(array,number)

Parameter | Description
--- | ---
array | Required. Specifies an array
number | Optional. Default 1. Specifies how many random keys to return

## Example 1

    <?php
    $a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse");
    print_r(array_rand($a,1));
    ?>

The output of the code above could be:

    b

## Example 2

An array with string keys:

    <?php
    $a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse");
    print_r(array_rand($a,2));
    ?>

The output of the code above could be:

    Array ( [0] => c [1] => b )

Complete PHP Array Reference

From http://www.w3schools.com (Copyright Refsnes Data)