How To Properly Handle PDO Exceptions in PHP?

Troubleshooting PDO Error Handling

When working with PDO in PHP, handling errors can sometimes be challenging. Here, we'll guide you through identifying and resolving common issues.

In your code, it appears that the handling of PDO exceptions is not properly configured. To enable PDO to throw exceptions, you need to set the PDO::ATTR_ERRMODE attribute to PDO::ERRMODE_EXCEPTION.

<code class="php">$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);</code>

Add this line just after creating the $connection object. After this modification, PDO will throw exceptions for any database errors.

In your example, the use of bindParam() seems correct. Here are the suggested changes:

• Replace trim($url) with $url: PDO's data type constants (e.g., PDO::PARAM_STR) already automatically handle string trimming.
• Specify the correct size/length for the country column when using bindParam: $statement->bindParam(':country', trim($country), PDO::PARAM_STR, 2).

With these adjustments, your code should handle PDO exceptions as expected and report any database errors accordingly.

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