PDOStatementerrorInfo

PDOStatement::errorInfo is a method in PHP's PDO (PHP Data Objects) extension that provides detailed information about errors that occur during the execution of a prepared statement. This method returns an array containing three elements: the SQLSTATE error code, the driver-specific error code, and the driver-specific error message. The SQLSTATE error code is a standardized five-character string that provides a general classification of the error, while the driver-specific error codes and messages offer more detailed information that can be useful for debugging.

The errorInfo method is particularly useful in the context of prepared statements, as it allows developers to handle errors more gracefully and provide more informative error messages to users. By checking the error information returned by errorInfo, developers can determine the nature of the error and take appropriate action, such as rolling back a transaction or logging the error for further investigation.

It is important to note that the errorInfo method should be called immediately after an error occurs, as the error information is only available for the most recent operation performed on the statement object. Additionally, the error information returned by errorInfo is specific to the database driver being used, so the format and content of the error codes and messages may vary depending on the driver.

In summary, PDOStatement::errorInfo is a valuable tool for handling errors in PHP applications that use the PDO extension. By providing detailed information about errors that occur during the execution of prepared statements, this method enables developers to build more robust and user-friendly applications.