How Can I Check for Successful PDO MySQL Insertions?

PDO MySQL: Determining Successful Insertions

When inserting records using PDO with MySQL, it is crucial to know whether the insertion was successful or encountered any issues. This knowledge enables developers to handle potential errors gracefully and ensure data consistency.

One way to determine the success of an insertion is to use the PDOStatement->execute() method. This method returns a boolean value (true or false) indicating whether the query was executed successfully. If the query fails, false will be returned, and the PDOStatement->errorCode() method can be used to retrieve the error code for further debugging.

For instance, consider the following code:

$stmt = $pdo->prepare("INSERT INTO table_name (field1, field2) VALUES (:field1, :field2)");
$stmt->bindParam(':field1', $field1, PDO::PARAM_STR);
$stmt->bindParam(':field2', $field2, PDO::PARAM_STR);
$result = $stmt->execute();
if ($result === false) {
    echo "Error occurred during insertion: " . $stmt->errorCode();
} else {
    echo "Insertion successful!";
}

In this code, if the insertion is successful, the execute() method will return true and "Insertion successful!" will be printed. However, if an error occurs during the insertion (such as a duplicate record issue), execute() will return false, and the error code will be displayed.

It's worth noting that the PDOStatement->errorCode() method will only return error codes for certain types of errors. For other types of errors, it is recommended to consult the database engine's documentation for specific error handling mechanisms.

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