<?php

var_dump(getDates('2014/15'));
var_dump(getDates('1999/12'));
var_dump(getDates('14/15'));


function getDates($dateRange) {
    $exp = explode('/', $dateRange);

    $startYear = $exp[0];
    // Cater for 14/15
    if ($startYear < 100) $startYear += 2000;

    $endYear = $exp[1];
    
    // If passed the full year, just use that
    if ($endYear < 100) {
    	$shortStartYear = substr($startYear, 2, 2);
    	if ($shortStartYear > $endYear) {
    		// Jumping millenium
    		$endYear += $startYear - $shortStartYear + 100;
    	} else {
    		// Same millenium
    		$endYear += $startYear - $shortStartYear;
    	}
    }
    
    return array('from'=>$startYear, 'to'=>$endYear);
}