How can one troubleshoot issues with variable access when including files in PHP?

When including files in PHP, it's essential to ensure that variables are properly scoped and accessible within the included file. To troubleshoot variable access issues, you can use the global keyword to make variables available within the included file. Simply declare the variable as global in the main file before including it in the included file. 

// main file
$variable = 'Hello';

function includeFile() {
    global $variable;
    include 'included_file.php';
}

includeFile();
```

```php
// included_file.php
echo $variable; // 'Hello'

Keywords

include require variable scope debugging file path

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