How can PHP code within included files be processed when using "file_get_contents()" instead of "include()"?

When using "file_get_contents()" to read the contents of a PHP file, the PHP code within the included file will not be processed or executed. To solve this issue, you can use the "eval()" function to evaluate the PHP code retrieved from the file and execute it.

// Read the PHP file using file_get_contents
$file_contents = file_get_contents('included_file.php');

// Evaluate and execute the PHP code using eval
eval('?>' . $file_contents);