What potential pitfalls should be considered when using GET parameters in PHP scripts for time-based logic?

One potential pitfall when using GET parameters in PHP scripts for time-based logic is that the user can manipulate the parameters to manipulate the outcome of the logic. To mitigate this risk, always validate and sanitize the input before using it in your time-based logic to ensure that only valid and expected values are used. 

// Example of validating and sanitizing GET parameter for time-based logic
$timestamp = isset($_GET['timestamp']) ? $_GET['timestamp'] : null;

// Validate timestamp format
if(preg_match('/^\d{10}$/', $timestamp)) {
    // Sanitize and use the timestamp in your logic
    $timestamp = intval($timestamp);
    // Your time-based logic here
} else {
    // Handle invalid timestamp input
    echo "Invalid timestamp input";
}

Keywords

GET parameters PHP scripts time-based logic security vulnerabilities SQL injection

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