How can PHP developers ensure secure handling of sensitive information like passwords when passing form variables in a URL?

PHP developers can ensure secure handling of sensitive information like passwords when passing form variables in a URL by using POST method instead of GET method to submit the form data. This way, sensitive information is not visible in the URL. Additionally, developers should always sanitize and validate user input to prevent SQL injection and other security vulnerabilities. 

<form action="process_form.php" method="post">
  <input type="text" name="username">
  <input type="password" name="password">
  <input type="submit" value="Submit">
</form>

Keywords

PHP security sensitive information passwords form variables

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