[php-src] Issue #7903: `mysqli` does not bind params the same way `PDO` does

Issue: https://github.com/php/php-src/issues/7903 Author: mvorisek ### Description The following query work with PDO: ```sql select id, name, code, is_eu, (select group_concat(name separator :a) name from user _U_f9aae5fda8d8 where country_id = country.id) user_names from country where id = :b limit 0, 2 array(2) { [":a"]=> string(1) "," [":b"]=> int(3) } ``` but the following query (with named params converted to numerical ones) does not work: ```sql select id, name, code, is_eu, (select group_concat(name separator ?) name from user _U_f9aae5fda8d8 where country_id = country.id) user_names from country where id = ? limit 0, 2 array(2) { [1]=> string(1) "," [2]=> int(3) } ``` Resulted in this error: ``` You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?) name from user _U_f9aae5fda8d8 where country_id = country.id) `us' at line 1 ``` But I expected this output instead: no error ### PHP Version PHP 7.4, 8.0 ### Operating System Windows, linux