Server Requirements

PHP version 7.2 or newer is required, with theintl extensioninstalled.

The following PHP extensions should be enabled on your server:php-json, php-mbstring, php-mysqlnd, php-xml`

In order to use the CURLRequest, you will needlibcurl installed.

A database is required for most web application programming.Currently supported databases are:

  • MySQL (5.1+) via the MySQLi driver
  • PostgreSQL via the Postgre driver
  • SQLite3 via the SQLite3 driver

Not all of the drivers have been converted/rewritten for CodeIgniter4.The list below shows the outstanding ones.

  • MySQL (5.1+) via the pdo driver
  • Oracle via the oci8 and pdo drivers
  • PostgreSQL via the pdo driver
  • MS SQL via the mssql, sqlsrv (version 2005 and above only) and pdo drivers
  • SQLite via the sqlite (version 2) and pdo drivers
  • CUBRID via the cubrid and pdo drivers
  • Interbase/Firebird via the ibase and pdo drivers
  • ODBC via the odbc and pdo drivers (you should know that ODBC is actually an abstraction layer)