There were some changes in PHP 5 regarding databases (MySQL and SQLite).
In PHP 5 the MySQL client libraries are not bundled, because of license
problems and some others. For more information, read the FAQ entry.
There is also a new extension, MySQLi (Improved
MySQL), which is designed to work with MySQL 4.1 and above.
Since PHP 5, the SQLite extension is
built-in PHP. SQLite is an embeddable SQL database engine and is not a
client library used to connect to a big database server (like MySQL or
PostgreSQL). The SQLite library reads and writes directly to and from the
database files on disk.
Php migration5.databases Function syntax tag
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Php migration5.databases syntax tutorial
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