如何在包含文件中使用变量[重复]

Is it possible to include files with a variable inside of include?

See this example:

$randfilescnt = rand(1,$filecount);

include('./quizes/Arrow/quiz'+ $randfilescnt +'.php');

How can I do this?

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Use "." for string concat in php

 $randfilescnt = rand(1,$filecount);

    include('./quizes/Arrow/quiz'.$randfilescnt.'.php');

Like this way :

$randfilescnt = rand(1,$filecount);
include("./quizes/Arrow/quiz".$randfilescnt.".php");