Random string PHP

<?php

//String's array
$strings = array('String1','String2','String3');

//Random key
$key = array_rand($strings);

//display random string
echo $strings[$key]; //when key = 0 result will be 'String1', when key = 1 result will be 'String2', when key = 2 result will be 'String3',

// by Touhid
?>