A token is a placeholder used in Drupal to represent a dynamic value. It is used to provide a substitute for programmatically generated content, such as user names, dates, and titles. Tokens are used in many areas of Drupal, including in the configuration of modules, in the creation of content, and in the generation of URLs.
Tokens are created using a combination of text and PHP code. The text is used to define the token name and the PHP code is used to generate the dynamic value. For example, a token might be used to generate a user's name, such as [user:name], which would be replaced with the actual name of the user when the token is processed. Tokens can also be used to generate URLs, such as [node:url], which would be replaced with the URL of the node when the token is processed.
Tokens are processed by the Drupal system when a page is rendered. The system will search for any tokens in the page and replace them with the appropriate dynamic value. This allows for dynamic content to be generated without the need for complex programming.
Tokens are a powerful tool for creating dynamic content in Drupal. They can be used to generate user names, dates, titles, and URLs, and can be used in many areas of Drupal, including in the configuration of modules, in the creation of content, and in the generation of URLs.