How to Troubleshoot \'SQLSTATE[HY000]: General Error\' in Laravel PDO Database Updates?

Solving PDO Error: "SQLSTATE[HY000]: General Error" When Updating Database

In this post, we'll delve into an issue encountered when updating a database using PHP Data Objects (PDO) and address the perplexing "SQLSTATE[HY000]: General error" message.

Problem Statement

The provided code attempts to update a database using a prepared statement. However, despite the update being successful, an error message is returned.

$page = 'my_page';
$section = 'content';
$new_content = 'new_content';
$old_content = 'old_content';

try {
    $stmt = $pdo->prepare("UPDATE $page SET $section = :new_content WHERE $section = '$old_content'");
    $stmt->execute(array(
        'new_content' => $new_content
    ));
    $result = $stmt->fetchAll(); // <-- This line may cause the issue
    echo "Database updated!";
}
catch(PDOException $e) {
    echo 'ERROR UPDATING CONTENT: ' . $e->getMessage();
}

Error Message

ERROR UPDATING CONTENT: SQLSTATE[HY000]: General error

Solution

The issue lies in the call to fetchAll() in the code. fetchAll() is typically used to retrieve data from a successful query. However, for update or insert queries, this statement is unnecessary. Removing it should resolve the problem.

$result = $stmt->fetchAll(); // <-- Remove this line

Once the fetchAll() statement is removed, the code should update the database successfully without producing an error message.

The above is the detailed content of How to Troubleshoot \'SQLSTATE[HY000]: General Error\' in Laravel PDO Database Updates?. For more information, please follow other related articles on the PHP Chinese website!