What are the best practices for handling variable passing between PHP files to ensure compatibility across different servers?

When passing variables between PHP files to ensure compatibility across different servers, it is important to use a consistent method such as using sessions or cookies. This helps to ensure that the variables can be accessed regardless of the server configuration. Additionally, it is recommended to sanitize and validate the input data to prevent security vulnerabilities. 

// To pass variables using sessions
session_start();
$_SESSION['variable_name'] = $value;

// To retrieve the variable in another file
session_start();
$value = $_SESSION['variable_name'];

Keywords

variable passing PHP files compatibility servers error types

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