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

2. Roadmap
We are here.

3. 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

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

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

8. Remember the order:
prepare
bindValue
Execute

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

10. 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

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

13. Can be hard to read…

14. Slightly easier to read…

15. INSERT
Tip!

16. UPDATE

17. DELETE

18. Let’s see what we can build…