PDO Revisited MIS 3502 Jeremy Shafer Department of MIS Fox School of Business Temple University

Roadmap We are here.

Agenda Old business New business Review code which opens a PDO database connection Review the PDO methods – prepare, bindvalue, execute, fetch, fetchAll, closecursor Review sample code which executes SELECT, INSERT, UPDATE and DELETE statements New business A tip for managing errors An alternative to named placeholders The lastInsertId method

Opening a database connection The syntax for executing a method of any object $objectName->methodName(argumentList) What’s the meaning of this?

What’s the purpose of this line? Tip! What’s the purpose of this line?

Remember the order: prepare bindValue Execute

Using the question mark placeholder instead of a named placeholder. Tip! Using the question mark placeholder instead of a named placeholder.

Retrieves one database record as a one dimensional array. SELECT Retrieves one database record as a one dimensional array. Remember the order: prepare bindValue execute fetch closeCursor

Retrieves multiple database records as a two dimensional array. Remember the order: prepare bindValue execute fetchAll closeCursor

Can be hard to read…

Slightly easier to read…

INSERT Tip!

UPDATE

DELETE

Let’s see what we can build…