+function isPostRequestElementSet ($element, $subElement = NULL) {
+ /*
+ * Always check that $element is a string and that $subElement is NULL or
+ * a string as numerical indexes are not wanted in POST data (in this
+ * project).
+ */
+ assert(is_string($element) && ((is_null($subElement)) || (is_string($subElement))));
+
+ // Is a sub element set?