minor code optimisation

include/text.php

@@ -2324,6 +2324,23 @@ function stringify_array_elms(&$arr, $escape = false) {
 		$arr[$x] = "'" . (($escape) ? dbesc($arr[$x]) : $arr[$x]) . "'";
 }
 
+
+/**
+ * @brief Similar to stringify_array_elms but returns a string. If $escape is true, dbesc() each element before adding quotes.
+ *
+ * @param array $arr
+ * @param boolean $escape (optional) default false
+ * @return string
+ */
+function stringify_array($arr, $escape = false) {
+	if($arr) {
+		stringify_array_elms($arr);
+		return(implode(',',$arr));
+	}
+	return EMPTY_STR;
+}
+
+
 /**
  * @brief Indents a flat JSON string to make it more human-readable.
  *