This document provides an overview of PHP features and installation including: 1) PHP is an interpreted scripting language that can be embedded into HTML and takes advantage of C code for performance. It provides common database features and functions. 2) PHP includes drivers for connecting to databases like Oracle, MySQL, PostgreSQL, SQLite, and others. 3) Installing PHP requires enabling extensions in php.ini and loading them in the proper order. PHP can be used for server-side web applications, command line scripts, or desktop applications.

1. PHP Features Install PHP Sample Code

2. Features Performance Native C code beats a scripted solution

3. Takes advantage of latest PHP 5 internals Power Gives you common DB features as a base

4. Still be able to access specialist functions Easy Non-intrusive

5. Clear Runtime extensible Drivers can be loaded at runtime

6. Available Drivers Oracle OCI [PDO_OCI]

7. ODBC V3, IBM DB2 [PDO_ODBC]

8. MySQL 3.x [PDO_MYSQL]

9. Postgres [PDO_PGSQL]

10. SQLite 3.x [PDO_SQLITE]

11. Firebird [PDO_FIREBIRD]

12. Switching it on Need to enable PDO in your php.ini

13. MUST load PDO first

14. Unix: extension=pdo.so extension=pdo_XXX.so Windows extension=php_pdo.dll extension=php_pdo_XXX.dll

15. DSN Aliasing uri:uri Specify location of a file containing actual DSN on the first line

16. Works with streams interface, so remote URLs can work too name (with no colon) Maps to pdo.dsn. name in your php.ini

17. pdo.dsn.name=sqlite:/path/to/name.db

18. $dbh = new PDO(‘name’);

19. $dbh = new PDO(‘sqlite:/path/to/name.db’); Neither of these allows for user/pass (yet!)