How can PHP access files outside of the Apache web root directory on an Ubuntu server?

PHP can access files outside of the Apache web root directory on an Ubuntu server by using absolute paths to the files. This can be achieved by specifying the full file path in the PHP code, allowing PHP to access files located anywhere on the server's file system. 

$file_path = '/full/path/to/file.txt';
$file_contents = file_get_contents($file_path);
echo $file_contents;

Keywords

PHP access files Apache web root directory Ubuntu server

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