$content = '';
$fileName = SITE_PATH.sp_admin_get_tpl_file_path_by_cat($cat, $tpl);
$handle = fopen($fileName, "r");
while (!feof($handle)){
$content .= fgets($handle);
}
fclose($handle);
$content = str_replace("\r","\\r",$content);
$content = str_replace("\n","\\n",$content);