<?php

namespace Tonic;

/**
 * Autoload
 */
class Autoloader
{
    /**
     * Handles autoloading of classes
     * @param string $className Name of the class to load
     */
    public static function autoload($className)
    {
        $fileName = dirname(__FILE__).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR;
        $namespace = '';
        if (false !== ($lastNsPos = strripos($className, '\\'))) {
            $namespace = substr($className, 0, $lastNsPos);
            $className = substr($className, $lastNsPos + 1);
            $fileName .= str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
        }
        $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
        require $fileName;
    }

}

ini_set('unserialize_callback_func', 'spl_autoload_call');
spl_autoload_register(array(new Autoloader, 'autoload'));

<?php

namespace Tonic;

/**
 * Autoload
 */
class Autoloader
{
    /**
     * Handles autoloading of classes
     * @param string $className Name of the class to load
     */
    public static function autoload($className)
    {
        if ('Tonic\\' === substr($className, 0, strlen('Tonic\\'))) {
            $fileName = dirname(__FILE__).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR;
            $namespace = '';
            if (false !== ($lastNsPos = strripos($className, '\\'))) {
                $namespace = substr($className, 0, $lastNsPos);
                $className = substr($className, $lastNsPos + 1);
                $fileName .= str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
            }
            $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
            require $fileName;
        }
    }

}

ini_set('unserialize_callback_func', 'spl_autoload_call');
spl_autoload_register(array(new Autoloader, 'autoload'));

--- 
+++ 
@@ -13,17 +13,15 @@
      */
     public static function autoload($className)
     {
-        if ('Tonic\\' === substr($className, 0, strlen('Tonic\\'))) {
-            $fileName = dirname(__FILE__).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR;
-            $namespace = '';
-            if (false !== ($lastNsPos = strripos($className, '\\'))) {
-                $namespace = substr($className, 0, $lastNsPos);
-                $className = substr($className, $lastNsPos + 1);
-                $fileName .= str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
-            }
-            $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
-            require $fileName;
+        $fileName = dirname(__FILE__).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR;
+        $namespace = '';
+        if (false !== ($lastNsPos = strripos($className, '\\'))) {
+            $namespace = substr($className, 0, $lastNsPos);
+            $className = substr($className, $lastNsPos + 1);
+            $fileName .= str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
         }
+        $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
+        require $fileName;
     }
 
 }
Remove Tonic namespace restriction from autoloader so as to allow people to hit the ground running without having to configure their own autoloader.
