To enable SQLite extension in PHP simply open the php.ini file find the following line and uncomment it:
;extension=php_sqlite3.dll
This will be found under the section 'Dynamic Extensions' in php.ini file
The SQLite extension is enabled by default as of PHP 5.0. Beginning with PHP 5.4, the SQLite extension is available only via PECL.
To enable SQLite extension in PHP simply open the php.ini file find the following line and uncomment it:
;extension=php_sqlite3.dll
This will be found under the section 'Dynamic Extensions' in php.ini file
This does not explain what PECL is to those just simply wanting to enable SQLite
This is the old SQLite2 extension, SQLite3 is the current SQLite driver for PHP 5.3+ and is included by default.