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What are some potential security risks associated with using global variables in PHP templates?

Using global variables in PHP templates can pose security risks as they can be easily manipulated by users, leading to potential injection attacks or unintended data exposure. To mitigate this risk, it is recommended to avoid using global variables in templates and instead pass variables explicitly to the template file.

php 
// Avoid using global variables in PHP templates
// Pass variables explicitly to the template file

// Example of passing variables to a template file
$data = [
    'name' => 'John Doe',
    'age' => 30
];

// Include the template file with the passed variables
include 'template.php';

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