Are there any best practices for handling popups in PHP to ensure a smooth user experience?

When handling popups in PHP, it is essential to ensure a smooth user experience by not overwhelming users with excessive popups. One best practice is to only show popups when necessary, such as for important notifications or user interactions. Additionally, allowing users to easily dismiss or close popups can improve the overall user experience.

// Example of handling popups in PHP

// Check if a popup needs to be displayed
$showPopup = true;

if($showPopup){
    echo '<div class="popup">
            <p>This is a popup message.</p>
            <button class="close-popup">Close</button>
          </div>';
}

// JavaScript to close the popup
echo '<script>
        document.querySelector(".close-popup").addEventListener("click", function(){
            document.querySelector(".popup").style.display = "none";
        });
      </script>';