mysql commands out of sync

1<?php
2    
3/**
4 *	Free all resultsets from $dbCon. Object Oriented
5 * Originally from https://falseisnotnull.wordpress.com/2013/06/02/mariadbmysql-commands-out-of-sync-error/
6 *	@param		mysqli		$dbCon	mysqli object.
7 *	@return		void
8 */
9function free_all_results(mysqli $dbCon)
10{
11    do {
12        if ($res = $dbCon->store_result()) {
13            $res->fetch_all(MYSQLI_ASSOC);
14            $res->free();
15        }
16    } while ($dbCon->more_results() && $dbCon->next_result());
17}
18    
19
20/**
21 * Free all resultsets from $dbCon. Procedural
22 * @param mysqli $dbCon mysqli object.
23 * @return        void
24 */
25function free_all_results(mysqli $dbCon): void {
26	do {
27		if ($res = mysqli_store_result($dbCon)) {
28			// $res->fetch_all(MYSQLI_ASSOC);
29			mysqli_fetch_all($res, MYSQLI_ASSOC);
30			mysqli_free_result($res);
31
32		}
33	} while (mysqli_more_results($dbCon) && mysqli_next_result($dbCon));
34}
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39
40
41?>