包含文件时的Var可见性

Question

How to make variables visible when including some file. For example:

code.php:

<?php
   global $var; $var = "green";
?>

index.php:

<?php

include("code.php");

Function index(){
   echo "The apple is $var";
}

?>

Please note that in code.php there are a lot of global variables (~150 variables) and all variables are used in many different functions inside the index.php.

Answer 1

This is an issue to do with variable scope, plus you do not need to be defining $var as a global.

When you include a file, you can imagine in your head that it is just copy-pasting the contents of the other file into the current file.

E.g.

code.php

$includedName = 'Tom';

index.php

include 'code.php';

function sayHello($name)
{
    echo 'Hello ' . $name;
}

sayHello($includedName); // Hello Tom