👀 Views: 72 💬 Answers: 1 📅 Created: 2025-06-01

php pdo prepared-statements mysql PHP

I keep running into Does anyone know how to I'm working with unexpected behavior when using PDO in PHP 8.1, specifically when passing an array to a prepared statement... I have a scenario where I need to insert multiple rows into a database table using a single SQL statement with placeholders. I have set up my code like this: ```php $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password'); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $data = [ ['name' => 'John Doe', 'email' => 'john@example.com'], ['name' => 'Jane Smith', 'email' => 'jane@example.com'] ]; $sql = 'INSERT INTO users (name, email) VALUES (:name, :email)'; $stmt = $pdo->prepare($sql); foreach ($data as $row) { $stmt->execute([':name' => $row['name'], ':email' => $row['email']]); } ``` After executing this code, I expect two rows to be inserted into the `users` table, but only the last entry seems to be inserted. I checked the database, and it only contains `Jane Smith`'s data. I tried to debug it, and I verified that the `$data` array contains the correct values before the loop. I also added behavior handling to see if any exceptions were thrown, but it appears that the `execute` method doesn’t throw any errors. It seems like the prepared statement might be retaining the last bound values, which is confusing. I've tried modifying the SQL to use `INSERT IGNORE` as well, but it still doesn't resolve the scenario. What might be going wrong here? Is there a better way to handle multi-row inserts with prepared statements or are there specific PDO configurations I should be aware of? I'd really appreciate any guidance on this. Cheers for any assistance! The stack includes Php and several other technologies. Is there a simpler solution I'm overlooking?