How to implement guide with php 8.1 and pdo when using named placeholders in prepared statements
Could someone explain I've looked through the documentation and I'm still confused about I'm experiencing an scenario when using PDO with named placeholders in prepared statements in PHP 8.1... My code works fine when using positional placeholders, but when I switch to named placeholders, it throws an behavior. Here’s a simplified version of my code: ```php try { $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password'); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sql = 'SELECT * FROM users WHERE username = :username AND age = :age'; $stmt = $pdo->prepare($sql); $username = 'john_doe'; $age = 30; $stmt->execute([':username' => $username, ':age' => $age]); $results = $stmt->fetchAll(PDO::FETCH_ASSOC); print_r($results); } catch (PDOException $e) { echo 'behavior: ' . $e->getMessage(); } ``` When running this code, I get the following behavior: `SQLSTATE[HY093]: Invalid parameter number: parameter was not defined`. I have verified that the parameter names in the array match exactly with the placeholders in the SQL string. I've also checked for any accidental whitespace or special characters in the keys. I’ve tried debugging by logging the exact values before execution and ensuring the database connection is properly established, but nothing seems to work. Any insights on what might be going wrong with named placeholders in PHP 8.1? Would switching to positional placeholders be a more reliable option for now? My development environment is Ubuntu. What am I doing wrong? I'm working on a application that needs to handle this. Any pointers in the right direction? This is my first time working with Php LTS. I'm on Debian using the latest version of Php. What's the correct way to implement this?