Insert duplicate value in front of an array with negative size parameter in PHP

Description

The following code shows how to insert duplicate value in front of an array with negative size parameter.

Example

/*  w  ww  .  j a v  a  2s.com*/
<?php
    $a=array("red","green");
    print_r(array_pad($a,-5,"blue"));
?>

The code above generates the following result.