Correct Answer: include() The include() function takes all the content in a specified file and includes it in the current file If an error occurs, the include() function generates a warning, but the script will continue execution include_once() File will not be included more than once If we want to include a file once only and further calling of the file will be ignored then we have to use the PHP function include_once() require() The require() function is identical to include(), except that it handles errors differently The require() generates a fatal error, and the script will stop require_once() The required file is called only once when a page is open and further calling of the file will be ignored
