PHP : Get url segment

get-url-segment.php

/**
 *Get url segment
 *@param int
 *@return string [name of requested url segment]
**/
function getSegment((int)$segmentPart)
{
	if(is_int($segmentPart))
	{
	    //Full path
	    $path = trim($_SERVER['REQUEST_URI'], '/');
	    
	    //Create array of segments from full path
	    $segment = explode('/', $path);
	    
	    //Check if $segment[$segmentPart] is set else it gives undefined offset with no segments in the url
	    if(isset($segment[$segmentPart]))
	    {
	       return $segment[$segmentPart]; 
	    }
	    else
	    {
	    	throw new Exception('$segment[$segmentPart] not set.');
		}
	}
	else
	{
		throw new Exception('Parameter must be an integer.');
	}
}