What is the issue with variable passing in PHP when changing pages?

When changing pages in PHP, variables are not automatically passed between pages unless explicitly included in the URL or stored in session or cookie variables. To solve this issue, you can use sessions to store variables that need to be accessed across different pages. 

// Start a session
session_start();

// Set a session variable
$_SESSION['variable_name'] = $value;

// Access the session variable on another page
session_start();
$variable = $_SESSION['variable_name'];

Keywords

variable passing PHP session variables form submission data persistence

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