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Install

Reqirements

  1. PHP 7.3 or later
  2. PHP extensions installed: intl and mbstring extension are installed
  3. PHP extension enabled: php-json, php-mysqlnd, and php-xml`
  4. libcurl installed for CURL requests 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
    • MSSQL via the SQLSRV driver (version 2005 and above only)

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
  • MSSQL via the pdo driver
  • 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)

Install with composer

Ensure that you have ‘composer’ installed on your machine

Setup Installation

For a new Codeigniter4 installation, you can clome the App starter that holds a skeleton application, with a composer dependency on the latest released version of the framework.

git clone https://github.com/codeigniter4/appstarter

Or run composer create-project

In the folder you wish to work on, run this command where webapp on this example will be your root project:

composer create-project codeigniter4/appstarter webapp

If you dont want the phpunit or just wanting to install the framework, add --no-dev at the end:

composer create-project codeigniter4/appstarter webapp --no-dev