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.

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info at westgatesearch dot com
1 month ago
If you are new to PHP PDO and looking for good examples in context of making real, working data entry or report apps, you can use WizzyWeb to see how it all works together in practice. This can be useful to see a complete, polished app before you delve in ad hoc trying to piece it all together. Knowing what the end product will look like can compress the ramp-up time.
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