How can variables from included files be accessed in PHP?

When including files in PHP, variables defined in the included file are not automatically accessible in the including file. To access variables from included files, you can use the `include` or `require` functions to bring in the external file's code. Then, you can use the `global` keyword to make the variables available in the including file. 

// Included file: variables.php
$var = "Hello, world!";

// Including file: index.php
include 'variables.php';
global $var;

echo $var; // Output: Hello, world!

Keywords

include require global scope variable

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