What is the difference between absolute and relative paths in PHP file inclusion?

Absolute paths in PHP file inclusion refer to specifying the full path of the file on the server, starting from the root directory. Relative paths, on the other hand, refer to the path of the file relative to the current working directory. When including files in PHP, it is generally recommended to use absolute paths to avoid any potential issues with file paths. 

// Using absolute path
include('/var/www/html/includes/header.php');

// Using relative path
include('includes/header.php');

Keywords

absolute paths relative paths PHP file inclusion include function directory structure

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