How can PHP developers ensure the anonymity of survey participants while still tracking their responses?

To ensure the anonymity of survey participants while tracking their responses, PHP developers can assign each participant a unique identifier that is stored separately from their survey responses. This identifier can be generated randomly and linked to the participant's responses in a separate database table. By separating the participant's identity from their responses, developers can track and analyze survey data without compromising the anonymity of the participants.

// Generate a unique identifier for each participant
$participant_id = uniqid();

// Store the participant's identifier in a separate database table
$query = "INSERT INTO participants (participant_id) VALUES ('$participant_id')";
// Execute the query

// Link the participant's identifier to their survey responses
$query = "INSERT INTO responses (participant_id, question1, question2, question3) VALUES ('$participant_id', '$response1', '$response2', '$response3')";
// Execute the query