PHP: __autoload

autoload.php

function __autoload($class_name) {

    # If file name contains underscore convert them to folder marks
    if (strpos($class_name, '_') !== false) {
        $className = str_replace("_", "/", $class_name);
    } else {
        $className = $class_name;
    }

    # This where we usually contain all our classes
    $path = dirname(__FILE__)."/classes/" . $className . '.php';
    
    # echo $path;
    # Check the obvious place first
    if (file_exists($path)) {
        require_once $path;
        return true;
        # file included no need to go forward
    }
    return false;
}