How can naming conventions for variables impact the functionality of sessions in PHP?

Naming conventions for variables in PHP can impact the functionality of sessions if reserved session variable names are inadvertently used. It is important to avoid using names like "session_id" or "session_name" for custom variables to prevent conflicts with the built-in session functionality. By following consistent naming conventions and avoiding reserved names, you can ensure that your custom session variables work as intended. 

<?php
session_start();

// Avoid using reserved session variable names
$_SESSION['user_id'] = 123;
$_SESSION['user_name'] = 'John Doe';
?>

Keywords

naming conventions variables sessions functionality PHP

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