Merge pull request #48 from wjcheers/master

[FEATURE] Make CSV exports in UTF-8 readable for Excel #41

config.php

@@ -121,6 +121,14 @@
 /* AJAX Encoding. */
 define('AJAX_ENCODING', 'UTF-8');
 
+/* Insert BOM in the beginning of CSV file */
+/* This is UTF-8 BOM, EF BB BF for UTF-8 */
+define('INSERT_BOM_CSV_LENGTH', '3');
+define('INSERT_BOM_CSV_1', '239');
+define('INSERT_BOM_CSV_2', '187');
+define('INSERT_BOM_CSV_3', '191');
+define('INSERT_BOM_CSV_4', '');
+
 /* Path to modules. */
 define('MODULES_PATH', './modules/');
 

lib/DataGrid.php

@@ -1470,6 +1470,23 @@ public function drawCSV()
         header('Connection: close');
         header('Content-Type: text/x-csv; name=export.csv');
 
+        if (defined('INSERT_BOM_CSV_LENGTH') && (INSERT_BOM_CSV_LENGTH > 0))
+        {
+            echo chr(INSERT_BOM_CSV_1);
+            if (INSERT_BOM_CSV_LENGTH > 1)
+            {
+                echo chr(INSERT_BOM_CSV_2);
+            }
+            if (INSERT_BOM_CSV_LENGTH > 2)
+            {
+                echo chr(INSERT_BOM_CSV_3);
+            }
+            if (INSERT_BOM_CSV_LENGTH > 3)
+            {
+                echo chr(INSERT_BOM_CSV_4);
+            }
+        }
+
         echo $headerRow;
 
         foreach ($this->_rs as $rowIndex => $row)