How can variables be changed after clicking a link in PHP without passing the value through the header?

When clicking a link in PHP, variables can be changed without passing the value through the header by using query parameters in the URL. By appending variables and their values to the URL as query parameters, they can be accessed and modified in the PHP script that processes the request. 

// Example of changing variables after clicking a link without passing through the header
// Link: <a href="page.php?variable=new_value">Click Here</a>

// page.php
if(isset($_GET['variable'])) {
    $variable = $_GET['variable'];
    // Use $variable as needed
}

Keywords

PHP variables link session form submission

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