What is the difference between including PHP files with and without the HTTP protocol?

When including PHP files without the HTTP protocol, the files are included as local files on the server, which can be more efficient and secure. However, including PHP files with the HTTP protocol allows for including files from remote servers, which can introduce security risks if not handled properly. To include PHP files without the HTTP protocol, use the `require_once` or `include_once` functions with the file path relative to the current file. To include PHP files with the HTTP protocol, use the `file_get_contents` function to retrieve the file contents and then `eval` to execute the code. 

// Including PHP files without the HTTP protocol
require_once 'path/to/file.php';

// Including PHP files with the HTTP protocol
$url = 'http://example.com/file.php';
$file_contents = file_get_contents($url);
eval($file_contents);

Keywords

PHP files include require HTTP protocol file inclusion

Related Questions