What are the potential pitfalls of using URL strings to pass data in PHP?

Using URL strings to pass data in PHP can expose sensitive information and make your application vulnerable to security risks such as data tampering and injection attacks. To mitigate these risks, it is recommended to use POST requests for passing sensitive data instead of relying solely on URL parameters. This can be done by submitting the data through a form with the method attribute set to "POST" or by using AJAX requests. 

<form method="POST" action="process_data.php">
  <input type="text" name="username">
  <input type="password" name="password">
  <button type="submit">Submit</button>
</form>

Keywords

URL strings data passing security vulnerabilities SQL injection input validation

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