* we'll use sys_get_temp_dir(). The TMPDIR, TMP, and TEMP environment
* variables are then checked in sequence, and if none are set /tmp is
* returned as the generic Unix default.
- *
- * NOTE: When possible, use the tempnam() function to create temporary
- * files to avoid race conditions on file creation, etc.
+ * It is common to call it with tempnam().
+ *
+ * NOTE: When possible, use instead the tmpfile() function to create
+ * temporary files to avoid race conditions on file creation, etc.
*
* @return String
*/