What are the best practices for implementing Sub ID Tracking in PHP?

Sub ID tracking in PHP allows you to track additional information about a user or a campaign. To implement Sub ID tracking, you can use URL parameters to pass the information and then retrieve it in your PHP code using the $_GET superglobal array. 

// Retrieve the Sub ID parameter from the URL
$sub_id = isset($_GET['sub_id']) ? $_GET['sub_id'] : '';

// Use the Sub ID in your tracking or analytics code
echo "Sub ID: " . $sub_id;

Keywords

Sub ID Tracking PHP tracking implementation tracking best practices tracking libraries

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