modificar funcion anterior siguiente

[repara2]

Código PHP:

function getPrev($c, $pics)
{
    if(1 == $c) return "<<";
    if($c <= count($pics)) return $c - 1;
    elseif($c == count($pics)) return $c;
}
 
function getNext($c, $pics)
{
    if($c < count($pics)) return $c + 1;
    elseif($c == count($pics)) return ">>";
}