Closes #639:

* Metastrings can be searched either case sensitive or insensitive modes. 
* Tags now have case lowered in a UTF8 safe way (requires mbstring support).
* Introducing mb_wrapper.php containing multibyte wrapper functions.
* Version bump.
* Introduces #1043 for consideration.

git-svn-id: https://code.elgg.org/elgg/trunk@3322 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 46 insertions, 0 deletions

diff --git a/engine/lib/mb_wrapper.php b/engine/lib/mb_wrapper.php
new file mode 100644
index 000000000..7b3327edc
--- /dev/null
+++ b/engine/lib/mb_wrapper.php
@@ -0,0 +1,46 @@
+<?php
+	/**
+	 * Elgg wrapper functions for multibyte string support.
+	 * 
+	 * @package Elgg
+	 * @subpackage Core
+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+	 * @author Curverider Ltd
+	 * @copyright Curverider Ltd 2008-2009
+	 * @link http://elgg.org/
+	 */
+
+	/**
+	 * Wrapper function: Returns the result of mb_strtolower if mb_support is present, else the
+	 * result of strtolower is returned.
+	 *
+	 * @param string $string The string.
+	 * @param string $charset The charset (if multibyte support is present) : default 'UTF8'
+	 * @return string
+	 */
+	function elgg_strtolower($string, $charset = 'UTF8')
+	{
+		if (is_callable('mb_strtolower'))
+			return mb_strtolower($string, $charset);
+			
+		return strtolower($string);
+	}
+	
+	/**
+	 * Wrapper function: Returns the result of mb_strtoupper if mb_support is present, else the
+	 * result of strtoupper is returned.
+	 *
+	 * @param string $string The string.
+	 * @param string $charset The charset (if multibyte support is present) : default 'UTF8'
+	 * @return string
+	 */
+	function elgg_strtoupper($string, $charset = 'UTF8')
+	{
+		if (is_callable('mb_strtoupper'))
+			return mb_strtoupper($string, $charset);
+			
+		return strtoupper($string);
+	}
+	
+	// TODO: Other wrapper functions
+?>
\ No newline at end of file