add function sendFile()

inc/inc.Utils.php

@@ -586,4 +586,24 @@ function addDirSep($str) { /* {{{ */
 	else
 		return trim($str);
 } /* }}} */
+
+/**
+ * Send a file from disk to the browser
+ *
+ * This function uses either readfile() or the xѕendfile apache module if
+ * it is installed.
+ *
+ * @param string $filename
+ */
+function sendFile($filename) { /* {{{ */
+	if(function_exists('apache_get_modules') && in_array('mod_xsendfile',apache_get_modules())) {
+		header("X-Sendfile: ".$filename);
+	} else {
+		/* Make sure output buffering is off */
+		if (ob_get_level()) {
+			ob_end_clean();
+		}
+		readfile($filename);
+	}
+} /* }}} */
 ?>