What are the potential security implications of using database fields to track and calculate timed actions in PHP?

Storing timed actions in database fields can potentially introduce security vulnerabilities such as SQL injection if the input is not properly sanitized. To mitigate this risk, it is important to use parameterized queries to prevent malicious user input from being executed as SQL commands. 

// Using parameterized queries to prevent SQL injection
$stmt = $pdo->prepare("SELECT * FROM actions WHERE action_time < :current_time");
$stmt->bindParam(':current_time', $current_time);
$stmt->execute();

Keywords

SQL injection timestamp encryption prepared statements authentication

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