PHP 8.2 - implementing PDO Prepared Statements and Array Binding
I can't seem to get I'm writing unit tests and I'm having trouble using PDO to execute a prepared statement with an array of values in PHP 8.2. I'm trying to insert multiple records into my `users` table from an array of user data. The array looks like this: ```php $userData = [ ['username' => 'johndoe', 'email' => 'john@example.com'], ['username' => 'janedoe', 'email' => 'jane@example.com'], ]; ``` I set up the prepared statement like this: ```php $pdo = new PDO('mysql:host=localhost;dbname=test', 'user', 'password'); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sql = "INSERT INTO users (username, email) VALUES (:username, :email)"; $stmt = $pdo->prepare($sql); ``` Then I try to loop through the `$userData` array and execute the statement for each user: ```php foreach ($userData as $user) { $stmt->execute([ ':username' => $user['username'], ':email' => $user['email'], ]); } ``` However, I keep getting the following behavior message: ``` SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'johndoe' for key 'username' ``` I confirmed that the `username` field is set to be unique in the database schema. I also checked that the `$userData` array doesn't contain duplicate usernames, but it seems like the loop is trying to insert the same user multiple times. I added some debug statements to log the values being executed, and they appear correct. What could be causing this scenario, and how can I ensure that each record is inserted without conflict? I want to avoid duplicate entries and handle any potential exceptions gracefully. This is my first time working with Php 3.10. Any pointers in the right direction? I'm using Php 3.9 in this project. I'd love to hear your thoughts on this.