'Require_once' / 'require' / 'include' is not working in PHP 7.2

require / require_once / include needs to be enclose, but, belonging to the php.ini, the quotes are changing from one setup to another...

in 4 ways : for 3 different setup of server.
the 3 functions involved same writing.

require_once 'myfile.php';
require_once "myfile.php";
require_once('myfile.php');
require_once("myfile.php");

you have possibly just a syntax error.. because of " or '

or a wrong path declaration :

require_once('folder/myfile.php');
require_once('../folder/myfile.php'); / it begins from root here,
but root can be in 'www' or 'parent' root if the server is set to do like that.
require_once('../www/folder/myfile.php');



To gain a bit, know that include and include once are now deprecated.

require_once is a very good solution, because it load the needed file just one time for all along the script to execute.
It's like 'linking' resource before execution, if you have the same file load 4 times in your code, require_once will load it "1 time" instead of "4". require_once filters the add of external resources. less code in your load, for a gain.



reach the php.ini and read which value between " or ' is ON.
so change it and see your code working again.

You did not mean to post this to me; you should use the Have a Question or Comment? link below.