Adding the language files

At the moment, all the text used in our plugin is hardcoded, so if a user wanted to change any of the text, they would have to edit the source code which is something we want to avoid for our end users. A lot of people use Joomla! in their native language and not everyone is going to want the text in English. Even if your plugin is only ever going to be used by English speakers, you still want them to be able to easily override the text to suit their needs. So we are going to create a language file, and instead of hardcoding the text, we will use a language string.

Firstly, we are going to replace the text in the parameters we have just added with language strings. Edit the clicktocall.xml file, and make the following changes:

<?xml version="1.0" encoding="UTF-8"?>
<extension
    version="3.0"
    type="plugin"
    group="content"
    method="upgrade">
  <name>Content - Click To Call</name>
  <author>Tim Plummer</author>
  <creationDate...