How Can I Make PDO Throw Exceptions Automatically?

Setting PDO to Throw Exceptions Automatically

When working with PDO, it's often convenient to have exceptions thrown in the event of errors rather than relying on error checking. While manually setting the exception handling mode is a straightforward process, it can be tedious to repeat this line of code for every database connection.

Configuration File Approach

Unfortunately, there is no configuration file option or parameter that allows you to set PDO to throw exceptions by default. This is because PDO is a core PHP extension and not a separate module or library that can be configured globally.

Constructor Solution

An alternative approach is to add the error handling attribute directly to the PDO constructor. By setting the PDO::ATTR_ERRMODE attribute to PDO::ERRMODE_EXCEPTION during object instantiation, you can ensure that exceptions will be thrown automatically. For example:

$pdo = new PDO('mysql:host=localhost;dbname=someDatabase', 'username', 'password', [
  PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
]);

By using this method, you can avoid having to manually set the error handling mode for each database connection.

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