What are the potential issues with using onclick events in submit buttons to execute PHP files?

Using onclick events in submit buttons to execute PHP files can lead to security vulnerabilities such as cross-site scripting (XSS) attacks. It is recommended to handle form submissions using server-side code to prevent these risks. One way to solve this issue is to use form submission with the method attribute set to "post" and the action attribute pointing to the PHP file that processes the form data. 

<form method="post" action="process_form.php">
  <!-- form fields go here -->
  <button type="submit">Submit</button>
</form>

Keywords

onclick events submit buttons PHP files security vulnerabilities cross-site scripting

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