array_rand in PHP

array_rand() function is used to fetch one or more random keys from the input array.

Syntax:

array_rand(array,number)

Parameters Description:

array : Required. Specifies an array
number : Optional. Default one. Specifies how many random keys to return

Example:

<?php
$daysarr1 = array("a"=>"Sunday","b"=>"Monday","c"=>"Tuesday");
print_r( array_rand($daysarr1) );
$daysarr2 = array("a"=>"Wednesday","b"=>"Thursday","c"=>"Friday");
echo "array with string keys";
print_r( array_rand($daysarr2,2) );
?>

O/P:

c
array with string keys
Array (
        [0] => b
        [1] => a
       )