+# string http\QueryString::getString(string $name[, mixed $defval = NULL[, bool $delete = false)
+
+Retrieve a string value with at offset $name.
+
+## Params:
+
+* string $name
+ The key to look up.
+* Optional mixed $defval = NULL
+ The default value to return if the offset $name does not exist.
+* Optional bool $delete = false
+ Whether to remove the key and value from the querystring after retrieval.
+
+## Returns:
+
+* string, the (casted) value.
+* mixed, $defval if offset $name does not exist.
+