/**
* Retrieve singleton instance
*
* @return Yaf_Loader
*/
public static function getInstance($library = null, $globalLibrary = null)
{
if (null === self::$_instance) {
self::$_instance = new self();
$instance = self::$_instance;
if ($library != null) {
$instance->setLibraryPath($library, false);
}
if ($globalLibrary != null) {
$instance->setLibraryPath($globalLibrary, true);
} else {
if ($library != null) {
$instance->setLibraryPath($library, true);
}
}
if (phpversion() >= "5.3") {
spl_autoload_register(array($instance, 'autoload'), true, false);
} else {
spl_autoload_register(array($instance, 'autoload'), true);
}
} else {
$instance = self::$_instance;
if ($library != null) {
$instance->setLibraryPath($library, false);
}
if ($globalLibrary != null) {
$instance->setLibraryPath($globalLibrary, true);
}
}
return self::$_instance;
}
