Kohana 2 ob_end_clean() hotfix (PHP 5.4+)

fix.diff

diff --git a/system/core/Kohana.php b/system/core/Kohana.php
index 271f917..287c271 100644
--- a/system/core/Kohana.php
+++ b/system/core/Kohana.php
@@ -722,7 +722,7 @@ final class Kohana {
 		if (ob_get_level() >= self::$buffer_level)
 		{
 			// Set the close function
-			$close = ($flush === TRUE) ? 'ob_end_flush' : 'ob_end_clean';
+			$close = ($flush === TRUE) ? 'ob_end_flush' : 'Kohana::_ob_end_clean';
 
 			while (ob_get_level() > self::$buffer_level)
 			{
@@ -731,7 +731,7 @@ final class Kohana {
 			}
 
 			// Store the Kohana output buffer
-			ob_end_clean();
+			Kohana::_ob_end_clean();
 		}
 	}
 
@@ -2173,6 +2173,31 @@ final class Kohana {
 
 		return $written;
 	}
+	
+	/**
+	 * Ends the current output buffer with callback in mind
+	 * PHP doesn't pass the output to the callback defined in ob_start() since 5.4
+	 *
+	 * @param  callback $callback
+	 * @return boolean
+	 */
+	protected static function _ob_end_clean($callback = NULL)
+	{
+		// Pre-5.4 ob_end_clean() will pass the buffer to the callback anyways
+		if (version_compare(PHP_VERSION, '5.4', '<'))
+			return ob_end_clean();
+		
+		$output = ob_get_contents();
+		
+		if ($callback === NULL)
+		{
+			$handlers = ob_list_handlers();
+			$callback = isset($handlers[ob_get_level() - 1]) ? $handlers[ob_get_level() - 1] : NULL;
+		}
+		
+		return is_callable($callback) 
+			? ob_end_clean() AND call_user_func($callback, $output) 
+			: ob_end_clean();
+	}
 
 } // End Kohana
 
@@ -2309,4 +2334,4 @@ class Kohana_404_Exception extends Kohana_Exception {
 		header('HTTP/1.1 404 File Not Found');
 	}
 
-} // End Kohana 404 Exception
\ No newline at end of file
+} // End Kohana 404 Exception

Hi!

Kohana 2 doesn't have get method in Arr helper. Line 45 ($callback = arr::get(ob_list_handlers(), ob_get_level() - 1);) cause error "Call to undefined method arr::get() in...".
Changing it to:
$_arr = ob_list_handlers();
$callback = $_arr[ob_get_level() - 1];
Works for me.

Anyway thnx for such a useful patch!

Mothod get of helper Arr

public static function get($array, $key, $default = NULL)
{
return isset($array[$key]) ? $array[$key] : $default;
}

see more: http://kohanaframework.org/3.2/guide/api/Kohana_Arr#get

Thank you for this dist. Did wonders to our crappy legacy code!