How can PHP developers ensure the security of their code when interacting with external sources like weather websites?

PHP developers can ensure the security of their code when interacting with external sources like weather websites by validating and sanitizing user input, using secure APIs with proper authentication mechanisms, and implementing data encryption for sensitive information. 

// Example code snippet for interacting with a weather API securely
$url = 'https://api.weather.com/data';
$apiKey = 'your_api_key';
$city = filter_var($_GET['city'], FILTER_SANITIZE_STRING);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url . '?city=' . $city . '&apiKey=' . $apiKey);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$response = curl_exec($ch);
if ($response === false) {
    die('Error: ' . curl_error($ch));
}

curl_close($ch);

// Process the response data securely

Keywords

Cross-site scripting SQL injection data validation HTTPS API authentication

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