| 
<?php
 function dbtest_autoload($class)
 {
 $prefix = 'DbTest\\';
 // base directory for the namespace prefix
 $base_dir = dirname(__FILE__);
 // does the class use the namespace prefix?
 $len = strlen($prefix);
 if (strncmp($prefix, $class, $len) !== 0)
 {
 // no, move to the next registered autoloader
 return;
 }
 // get the relative class name
 $relative_class = substr($class, $len);
 
 // replace the namespace prefix with the base directory, replace namespace
 // separators with directory separators in the relative class name, append
 // with .php
 $file = $base_dir . DIRECTORY_SEPARATOR. str_replace('\\', '/', $relative_class) . '.php';
 // if the file exists, require it
 if (file_exists($file))
 {
 require $file;
 }
 }
 spl_autoload_extensions(".php");
 spl_autoload_register('dbtest_autoload');
 |