How can PHP developers implement a scroll bar for a specific div element to handle overflow content effectively?

When dealing with overflow content in a specific div element, PHP developers can implement a scroll bar by setting the CSS property 'overflow: auto;' on the div element. This will allow users to scroll through the content within the div if it exceeds the specified height.

<div style="height: 200px; overflow: auto;">
  <!-- Content that may overflow goes here -->
</div>