How to use the exception mode?

When the exception mode is used-PDO: ERRMODE_EXCEPTION (error method 3 in the capture SQL statement in PDO), a PDOException is created in the exception mode and the erorCode attribute is set, it can encapsulate the execution code into a try {...} catch {...} in the statement, uncaptured exceptions will cause the script to be interrupted, and the stack trace will show you the problem! In the first two articles, use the default mode-PDO: ERRMODE_SILENT (capture S in PDO... when the exception mode is used-PDO: ERRMODE_EXCEPTION (error method 3 in the capture SQL statement in PDO), a PDOException is created in the exception mode and the erorCode attribute is set, it can encapsulate the execution code into a try {...} catch {...} in the statement, uncaptured exceptions will cause the script to be interrupted, and the stack trace will show you the problem! In the first two articles, use the default mode-PDO: ERRMODE_SILENT (error method 1 captured in SQL statements in PDO), use the warning mode-PDO :: ERRMODE_WARNING (error method 2 for capturing SQL statements in PDO) describes the default mode and exception mode, so today we will introduce the third method to capture SQL statement errors in PDO ~ The exception mode is also very useful. Compared with traditional PHP-style warnings, you can build your own error handling more clearly, and check the return values of each database call compared to the silent mode and explicitly, the exception mode requires less code/nesting. Division

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