Vastly speed up multi-word matches (ie "... ... ...")

CHANGES

@@ -44,6 +44,7 @@ For further information about Photo Organizer, see its web site at:
  [add]  Generate a full-size image from RAW imports.
  [add]  Initial background image import/processing worker.
  [add]  Pretty-URL the folder search too.
+ [misc] Vastly speed up searching for "multi-word matches"
 
 2.36.1 (September 27, 2008)
 

src/include/search.php

@@ -104,7 +104,7 @@ function prepare_keyword($keyword, $enable_stemming) {
     $keyword = str_replace(";", " ", $keyword);
     $keyword = str_replace("#@#", " ", $keyword);
 
-    return " =##= '".$keyword."'";
+    return " ILIKE '%$keyword%'";
   }
 
   /* ignore all signle quotation marks */