mysqli_multi_query($link, $wsql)

        if (mysqli_multi_query($link, $wsql)) {
            do {
                if ($result = mysqli_store_result($link)) {
                    mysqli_free_result($result);
                }
            } while (mysqli_more_results($link) && mysqli_next_result($link));
        }

 1 <?php
 2 echo phpinfo();
 3 function w_db_in_w($link, $fk_countrycode, $fk_categoryid, $wmax_grab_date, $wmin_grab_date, $year, $week)
 4 {
 5     mysqli_query($link, 'SET group_concat_max_len=8192');
 6     $sql = 'SELECT GROUP_CONCAT(amzid) AS wsum FROM ( SELECT amzid FROM grab_amz_sales_ranking WHERE  countrycode="' . $fk_countrycode . '" AND w_categoryid=' . $fk_categoryid . ' AND grab_amz_date>=' . $wmin_grab_date . '  AND grab_amz_date<=' . $wmax_grab_date . ' AND grab_page_rank<101 ORDER BY w_sale DESC LIMIT 100 ) AS w192';
 7 
 8     $w_amzidlist = db_single_row_single_field_link($link, $sql, 'wsum');
 9 
10     if (!empty($w_amzidlist)) {
11         $sql = 'INSERT INTO sales ranking_week (history_year,history_week,fk_countrycode,fk_categoryid,amzidlist100_amzids) VALUES ( ' . $year . ',' . $week . ',"' . $fk_countrycode . '",' . $fk_categoryid . ',"' . $w_amzidlist . ' ");';
12         $w_id = gen_this_insert_id_link($sql, $link);
13         $wkey = 'sales ranking_week_id';
14         $sql = 'SELECT SUM(w_sale) AS wsum FROM ( SELECT w_sale FROM grab_amz_sales_ranking WHERE  countrycode="' . $fk_countrycode . '" AND w_categoryid=' . $fk_categoryid . ' AND grab_amz_date>=' . $wmin_grab_date . '  AND grab_amz_date<=' . $wmax_grab_date . ') AS w';
15         $w_amount_all = db_single_row_single_field_link($link, $sql, 'wsum');
16         $wsql = 'UPDATE sales ranking_week SET  amount_all = ' . $w_amount_all . ' WHERE ' . $wkey . '=' . $w_id . ';';
17         if ($w_amount_all > 0) {
18             for ($w = 100; $w >= 10; $w = $w - 10) {
19                 $sql = 'SELECT SUM(w_sale) AS wsum FROM ( SELECT w_sale FROM grab_amz_sales_ranking WHERE  countrycode="' . $fk_countrycode . '" AND w_categoryid=' . $fk_categoryid . ' AND grab_amz_date>=' . $wmin_grab_date . '  AND grab_amz_date<=' . $wmax_grab_date . ' AND grab_page_rank<' . ($w + 1) . '  ORDER BY w_sale DESC LIMIT ' . $w . ') AS w';
20                 $w_res = db_single_row_single_field_link($link, $sql, 'wsum');
21                 $wsql .= 'UPDATE sales ranking_week SET  amount_' . $w . ' = ' . $w_res . ' WHERE ' . $wkey . '=' . $w_id . ';';
22             }
23         }
24         /*
25          * mysqli_multi_query($link,$wsql);
26          * WRONG
27          * 2016-12-20 15:49:01
28 PHP Version 5.3.29
29          * */
30         //
31         if (mysqli_multi_query($link, $wsql)) {
32             do {
33                 if ($result = mysqli_store_result($link)) {
34                     mysqli_free_result($result);
35                 }
36             } while (mysqli_next_result($link));
37         }
38     }
39 }

Strict Standards: mysqli_next_result() [function.mysqli-next-result]: There is no next result set. Please, call mysqli_more_results()/mysqli::more_results() to check whether to call this function/method