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        Previously on the blog
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        1. Using POG with Flex
        2. Optimizing your web application
        3. Regenerating large objects
        4. PHP4 or PHP5
        5. New and Improved
        6. Evolution of a cube
        7. POG Museum
        8. POG 3.0 alpha
        9. Initial Performance results Part 2
        10. Initial performance results
        11. Proposal: POG 3.0 object model
        12. Suggest a feature
        13. A new year, A new POG release
        14. Many-Many relations
        15. POG 2.5 Released
        16. POG 2.5 beta
        17. Automatic table alignment
        18. New version: 2.1.2 released
        19. RSS should work well now
        20. RSS feed glitches
        21. What's new in 2.1.0
        22. PHP Objects 2.1.0 (preview)
        23. PHP Object relations FAQ
        24. PHP Object Relations
        25. Searching base64 encoded text
        26. How to debug POG-generated objects
        27. POG UI Tips
        28. Featuring Of Interest links
        29. PHP CRUD
        30. POG 2.0.1: A better code generator
        31. A look at the POG SOAP API
        32. POG 2.0.0 released
        33. Coming soon: Generate parent-child objects
        34. Generated abstraction v/s dynamic abstraction
        35. Zend Framework preview
        36. Coming soon: Generate Objects through SOAP
        37. Easily save images and files to a database
        38. PHP, Paypal & POG
        39. Five advanced Code Generator tips
        40. PHP Pagination using generated objects
        41. PHP Code Generator benchmarks
        42. Representing database objects using an AJAX Tree interface
        43. Using SETUP in a production environment
        44. Description of the generated object package
        45. Introducing PHP Object Generator version 1.6
        46. Using AJAX and PHP Object Generator
        47. When to use Object->SaveNew()
        48. Generating PHP objects in 2006
        49. Happy Holidays
        50. A short video of the POG Setup process
        51. A sneak peek at POG 1.6
        52. POG Tip: Field limits
        53. Previous versions.
        54. Searching the blog and tutorials sections
        55. Generating code with "Other" SQL data types
        56. Five general POG tips
        57. POG source code locations
        58. Microsoft SQL 2005 Express Edition
        59. Impatiently awaiting PHP 5.1 and PDO
        60. Php Object Generator goes open source
        61. POG generates PDO compatible code
        62. Oracle to offer free database
        63. POG Google group
        64. Database Wrappers and POG
        65. Revisions
        66. The generator blog
        67. An explanation of the 'Escape' function.
        68. Mirror, mirror
        69. Using POG to solve real world problems
        70. A php object-relational database tool
        71. A simple and flexible Object Oriented approach to PHP


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        Database Wrappers and POG

        written 5032 days ago

        Each time you generate an object using Php Object Generator, you have 2 ways of obtaining your code. The first is to simply copy and paste the generated code from a text area. The second is to download a zipped file which contains your object along with a configuration file and a database class.

        This Database class(class.database.php) is required by your object so that it can perform database operations such as “Save”, “Delete”, “Get” etc. It’s also important to note that currently, this database wrapper is specific to MySQL only and won’t work if you’re planning to use other databases, such as Oracle.

        Here’s a diagram that shows how the POG database wrapper fits in the overall picture of things.

        However, as PHP matures, there are new sets of standard libraries being developed for it, and as from version 5.1, PHP includes a native Database Object Library called PDO. There’s also an open source project that implements PDO for PHP 4.

        From the PHP website:
        The PHP Data Objects (PDO) extension defines a lightweight, consistent interface for accessing databases in PHP. Each database driver that implements the PDO interface can expose database-specific features as regular extension functions. Note that you cannot perform any database functions using the PDO extension by itself; you must use a database-specific PDO driver to access a database server.

        PDO provides a data-access abstraction layer, which means that, regardless of which database you’re using, you use the same functions to issue queries and fetch data. PDO does not provide a database abstraction; it doesn’t rewrite SQL or emulate missing features. You should use a full-blown abstraction layer if you need that facility.

        PDO ships with PHP 5.1, and is available as a PECL extension for PHP 5.0; PDO requires the new OO features in the core of PHP 5, and so will not run with earlier versions of PHP.

        As PDO becomes the defacto database access library for PHP, (as we believe it will) we want you to know that we’ll make sure POG generates objects that are compatible with PDO.

        So, if you decide to make your generated object compatible with PDO instead of POG’s `default` wrapper, here’s a diagram that shows how things will look like:

        You can hopefully see now why we’re working to make POG compatible with PDO in the near future. This way, as a developer, you’ll be able to choose your preferred database without having to rewrite hundreds, if not thousands of lines of code.

        As soon as POG becomes compatible with PDO, we’ll announce it on this blog and PDO should also appear as a choice in the database wrapper drop down list.


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        About Php Object Generator
        This is a weblog about the Php Object Generator (POG) project, OO PHP, databases and Php code generators in general.

        Php Object Generator, (POG) is an open source PHP code generator which automatically generates clean & tested Object Oriented code for your PHP4/PHP5 application.

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