How Can I Retrieve PDO Prepare() Query Errors in PHP?

Retrieving Query Errors from prepare() in PDO PHP

When using PDO PHP to prepare a query, it's essential to check for any potential errors. By default, PDO doesn't throw exceptions for errors encountered during query preparation. To enable error handling, you can leverage the PDO::ATTR_ERRMODE attribute.

Solution

• Set PDO::ATTR_ERRMODE to PDO::ERRMODE_EXCEPTION: By setting this attribute, prepare() will throw an exception if an error occurs.
• Disable PDO::ATTR_EMULATE_PREPARES: To ensure the MySQL server processes the query during prepare(), disable this attribute. Emulation sometimes prevents the server from detecting errors until query execution.

Example:

$pdo = new PDO('mysql:host=localhost;dbname=test;charset=utf8', 'localonly', 'localonly');
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$pdo->prepare('INSERT INTO DoesNotExist (x) VALUES (?)');

If the provided query contains invalid syntax, PDO will throw an exception with the following information:

SQLSTATE[42S02]: Base table or view not found: 
1146 Table 'test.doesnotexist' doesn't exist

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