MX on Linux: Difference between revisions

PHP is not the only script language available, but it is quite comprehensive being able to be used either in a fairly simple way or in an object-oriented way for those trying to achieve more complex scripts.  The instruction to install it is <tt>sudo apt install php -y</tt>, which version you get depends on your Pi and its operating system. To check which modules have been installed type <tt>php -m</tt>. For PhpMyAdmin your php modules loaded (they are also listed in the .ini file, where unwanted ones can be commented out), must include at least mysqli and mbstring, I will say how to find the .ini files later.  

Alternatively, you can install <tt>sudo apt install</tt> particular php modules, or a particular version, by selecting components from a list like "<tt>php7-fpm php7-cgi php7-cli php7-common php7.3-mbstring php7.3-mysql php7.3-curl php7.3-gd php7.3-zip -y</tt>, only use this approach to force a particular version (but you may find that is not available), or if you are short of space, and you are only going to use a minority of the php features available in the full set of modules.  

You may wish to create a index.php web page at /var/www/html which is the web server root for browsing, or of course you may wish to copy or FTP here all your existing web pages. To view a php web page, go into a browser and type in a url with the same IPv4 address as you use for the admin interface, omit the port (:8998) and instead type in your web page name (e.g. http://192.168.1.'''xy'''/index.php, where you need to determine digits that replace '''xy''').

To test that php is installed, type <tt>php -v</tt> into terminal, and you will see the exact version that has been installed, a confirmation that it offers command line interface (cli), and a copyright notice.

The main '''php.ini''' is found at ''/etc/php/7.n/apache2/php.ini'' (where 'n' depends on your Raspberry OS version and therefore which PHP version was installed, that was found out in last paragraph). Your own .ini file gets stored at ''/usr/lib/php/7.n/php-production.ini''.

 

To run a php script in batch, type <tt>php - f <file_name></tt>. You can redirect the output by adding a greater than symbol and the destination file (i.e. > log_file) on the same terminal line.