In PHP, what are the common reasons for variables to become inaccessible or empty when using include statements, and how can these issues be prevented or resolved?

Variables may become inaccessible or empty when using include statements due to variable scope issues. To prevent this, you can use the `global` keyword to access global variables within included files. Additionally, you can pass variables as parameters to the included file to ensure they are accessible. 

// main.php
$var = "Hello";
include 'included.php';

// included.php
global $var;
echo $var; // Output: Hello

Keywords

PHP include statements variable scope empty variables preventions

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