1 files changed, 20 insertions, 2 deletions
diff --git a/phpBB/includes/functions_content.php b/phpBB/includes/functions_content.php
index b7650ecd6a..19459239d5 100644
--- a/phpBB/includes/functions_content.php
+++ b/phpBB/includes/functions_content.php
@@ -21,6 +21,7 @@ if (!defined('IN_PHPBB'))
 * make_jumpbox()
 * bump_topic_allowed()
 * get_context()
+* phpbb_clean_search_string()
 * decode_message()
 * strip_bbcode()
 * generate_text_for_display()
@@ -361,6 +362,23 @@ function get_context($text, $words, $length = 400)
 }
 
 /**
+* Cleans a search string by removing single wildcards from it and replacing multiple spaces with a single one.
+*
+* @param string $search_string The full search string which should be cleaned.
+*
+* @return string The cleaned search string without any wildcards and multiple spaces.
+*/
+function phpbb_clean_search_string($search_string)
+{
+	// This regular expressions matches every single wildcard.
+	// That means one after a whitespace or the beginning of the string or one before a whitespace or the end of the string.
+	$search_string = preg_replace('#(?<=^|\s)\*+(?=\s|$)#', '', $search_string);
+	$search_string = trim($search_string);
+	$search_string = preg_replace(array('#\s+#u', '#\*+#u'), array(' ', '*'), $search_string);
+	return $search_string;
+}
+
+/**
 * Decode text whereby text is coming from the db and expected to be pre-parsed content
 * We are placing this outside of the message parser because we are often in need of it...
 */
@@ -413,7 +431,7 @@ function generate_text_for_display($text, $uid, $bitfield, $flags)
 {
 	static $bbcode;
 
-	if (!$text)
+	if ($text === '')
 	{
 		return '';
 	}
@@ -459,7 +477,7 @@ function generate_text_for_storage(&$text, &$uid, &$bitfield, &$flags, $allow_bb
 	$uid = $bitfield = '';
 	$flags = (($allow_bbcode) ? OPTION_FLAG_BBCODE : 0) + (($allow_smilies) ? OPTION_FLAG_SMILIES : 0) + (($allow_urls) ? OPTION_FLAG_LINKS : 0);
 
-	if (!$text)
+	if ($text === '')
 	{
 		return;
 	}