How does variable scope impact the accessibility of included variables in PHP?

Variable scope in PHP determines where a variable can be accessed within a script. When including files in PHP, variables defined in the included file may not be accessible in the including file if they are defined within a different scope. To make included variables accessible in the including file, you can use the `global` keyword to declare the variable as global within the included file. 

// included_file.php
$includedVar = "Hello, I am included variable";

// including_file.php
include 'included_file.php';

function displayIncludedVar() {
    global $includedVar;
    echo $includedVar;
}

displayIncludedVar(); // Output: Hello, I am included variable

Keywords

variable scope accessibility included variables PHP error types

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