PHP 8.2 Using PDO with Multiple Result Sets: Issues Closing Connections
Could someone explain I'm working on a personal project and I'm currently working on a PHP application where I'm using PDO to execute multiple SQL queries that return different result sets. However, I am working with an scenario where the database connections seem to hang after the first query execution, especially when using a `mysqli` driver. The application is built on Laravel 9.2 and I'm utilizing the native PDO connection to handle database interactions. After executing the first query, the following behavior is thrown: ``` PDOException: SQLSTATE[HY000]: General behavior: 2014 want to execute queries while other unbuffered queries are active ``` Here's the code snippet that illustrates what I'm trying to achieve: ```php $dbh = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password'); $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $query1 = 'SELECT * FROM users'; $query2 = 'SELECT * FROM orders'; $result1 = $dbh->query($query1); $result2 = $dbh->query($query2); $users = $result1->fetchAll(PDO::FETCH_ASSOC); $orders = $result2->fetchAll(PDO::FETCH_ASSOC); ``` I have also tried using `FETCH_BOTH` and `PDO::MYSQL_ATTR_USE_BUFFERED_QUERY`, but the scenario continues. Additionally, I noticed that if I comment out the second query, the first one executes without any issues. Is there a specific way to handle multiple queries with PDO when dealing with unbuffered results? Should I be using a different approach like storing the results in variables before executing the next query? Any help or best practices to handle this would be greatly appreciated! Am I missing something obvious? This is happening in both development and production on Debian. Any suggestions would be helpful.