How can frames impact the functionality of form submissions in PHP?

Frames can impact the functionality of form submissions in PHP by causing the form data to be submitted within the frame itself instead of the intended target page. To solve this issue, you can add a `target="_top"` attribute to the form element. This attribute ensures that the form data is submitted to the top-level browsing context, bypassing any frames. 

<form action="submit.php" method="post" target="_top">
  <!-- form fields here -->
  <input type="submit" value="Submit">
</form>

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frames form submissions functionality PHP impact

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